Language：English   Publishing type：Research paper (scientific journal)  

OBJECTIVE: Several studies have investigated the predictors of functional outcome in patients with ischemic stroke after mechanical thrombectomy (MT). However, it is not clear whether pre-stroke cognitive (PSC) impairment is associated with the functional outcome of patients treated with MT. METHODS: We enrolled 113 patients treated with MT from December 2016 to November 2018. PSC was evaluated using the Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE). Poor outcome was defined as a modified Rankin Scale score of 3-6. We compared the clinical characteristics between the groups with poor outcome (n = 61) and good outcome (n = 52) to determine if PSC could be a predictor of poor outcome. RESULTS: IQCODE was significantly higher in the group with poor outcome than good outcome (3.34 vs. 3.13, P = 0.017). Moreover, the following metrics differed between those two groups: age (75.9 vs. 71.6 years old, P = 0.010), the percentage of females (39.9% vs. 17.3%, P = 0.009), the percentage with hypertension (72.1% vs. 44.2%, P = 0.003), National Institutes of Health Stroke Scale (NIHSS) score on admission (20 vs. 11, P < 0.001), and no successful recanalization (24.5% vs. 7.7%; P = 0.025). Multivariable logistic regression analysis demonstrated that PSC (OR: 5.59; 95% CI: 1.55-23.47), history of hypertension (OR: 3.33; 95% CI: 1.29-9.11), no successful recanalization (OR: 5.51; 95% CI: 1.49-25.03), and NIHSS score on admission (OR: 1.14; 95% CI: 1.07-1.22) were associated with poor outcome 3 months after stroke onset. CONCLUSIONS: PSC was significantly and independently associated with poor functional outcome in patients treated with MT.

DOI： 10.1007/s10072-021-05158-6

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Language：Japanese   Publisher：(有)科学評論社  

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BACKGROUND: This study developed a Japanese version of the Geriatric Anxiety Inventory (GAI-J) and its short form (GAI-J-SF) to evaluate anxiety in older adults in Japan and assess these measures' psychometric properties with a cross-sectional design. METHODS: Participants (N = 400; mean age: 75 years) were community-dwelling older adults who answered a set of self-report questionnaires. They were recruited from a community centre for older persons in the Kanto region of Japan. Of the respondents, 100 participated in a follow-up survey to evaluate test-retest reliability. Item response theory was adopted to evaluate item parameters. RESULTS: Confirmatory factor analysis with categorical data suggested that, as with the original Geriatric Anxiety Inventory, the GAI-J/GAI-J-SF had a unifactor structure. Test-retest correlation and internal consistency analyses indicated that these scales had high reliability. Item response theory results showed that both measures' item parameters were acceptable. Correlations with the Penn State Worry Questionnaire, State Trait Anxiety Inventory-State Only, Generalized Anxiety Disorder-7 and Patient Health Questionnaire-9 were mostly consistent with our hypotheses. This supports the high convergent validity of the GAI-J/GAI-J-SF. CONCLUSIONS: The findings indicate that the GAI-J and the GAI-J-SF have robust psychometric properties for assessing late-life anxiety in older Japanese adults. Future GAI-J studies in clinical groups are needed.

DOI： 10.1111/psyg.12683

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Language：English   Publishing type：Research paper (scientific journal)  

The rising older population in Japan is associated with a rise in cases of dementia. Support for the increased number of family caregivers of people living with dementia is crucial, as caring may negatively affect a family caregiver's health. This study seeks to evaluate the feasibility and applicability of a recently developed Japanese version of START (STrAtegies for RelaTives). START is a psychosocial coping intervention program developed in the United Kingdom that has been shown to improve caregivers' mood and quality of life in a randomized controlled trial. We made changes to START (e.g., idioms, linguistic nuance, and providing care insurance information suited for Japan) to make it culturally appropriate. Fourteen Japanese female family caregivers of relatives with mild dementia (n = 10) or mild cognitive impairment (n = 4) were referred to the study, but six were excluded owing to illness and busyness. This single-arm study had a before-after trial evaluating psychological outcomes including depression, anxiety, quality of life, and subjective care burden. The acceptance retention and satisfaction rate suggest the feasibility and acceptability of the START program; 8/14 (>55%) eligible, prospective participants consented and were included in this study, all (8/8) of whom completed all START sessions. The mean program satisfaction score was 30.25 (standard deviation = 2.25) out of a potential 32. The results suggest that it is feasible and acceptable to deliver START in Japanese and based on the results of analysis using a linear mixed model, there is initial indication that the intervention improved family caregivers' quality of life, depressive symptoms, and care burden.

DOI： 10.1177/1471301220919938

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OBJECTIVE: We examined the diagnostic value of brain perfusion single-photon emission computed tomography (SPECT) using voxel-based statistical analysis with CT-based attenuation correction (CT-AC) by comparing it to that with Chang's AC in mild cognitive impairment (MCI) patients and attempted to locate brain areas that are good indicators predicting the progression of MCI. METHODS: Twenty-six individuals matched for age, educational background and initial Mini-Mental State Examination (MMSE) score of more than 24 underwent SPECT with N-isopropyl-4-[123I]iodoamphetamine and were assigned to 2 groups: the stable MCI (S-MCI) group comprising 11 subjects who maintained their MMSE score (mean 27.0) during at least a 1-year follow-up period (mean 37.2 months) and the progressive MCI (P-MCI) group comprising 15 subjects whose MMSE scores decreased by 3 or more points (from 26.4 to 21.4, mean). The diagnostic values of the two AC methods for discriminating P-MCI from S-MCI were compared using voxel-based statistical analysis in the lobe (Level 2) and lobule/gyrus levels (Level 3). RESULTS: Receiver operating characteristic analysis revealed that the area under the curve (AUC) was higher with CT-AC than with Chang's AC in the left temporal and limbic lobes in Level 2. In Level 3, the AUC in the left middle temporal gyrus was higher with CT-AC (0.852) than with Chang's AC (0.827). There were differences between the gyri/lobules that showed higher AUCs with CT-AC and those that showed higher AUCs with Chang's AC. When the gyri with the 4 highest AUCs were combined, AUC (0.897) and accuracy (84.6%) were better with CT-AC than with Chang's AC (0.806 and 80.8%). Surprisingly, the AUCs in the posterior cingulate gyrus and precuneus, excluding the AUC in the right precuneus with Chang's AC (0.715), were no more than 0.70 and less useful. CONCLUSIONS: CT-AC may allow brain perfusion SPECT to reflect more exact neuropathic changes in MCI that would cause progression of early AD. CT-AC in conjunction with voxel-based statistical analysis could possess higher diagnostic accuracy for exacerbation of disease implying early Alzheimer changes in MCI patients, with decreases in cerebral perfusion in the left temporal and limbic lobes representing good indicators.

DOI： 10.1007/s12149-020-01477-4

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OBJECTIVES: Evaluation of cognitive status is not performed routinely in the acute stroke setting. This study aimed to evaluate the frequency of early cognitive impairment in patients with minor ischemic stroke, analyze the factors associated with early cognitive impairment, and assess functional outcomes. METHODS: In this prospective study, 112 consecutive patients with acute minor ischemic stroke were enrolled. Neuroimages were assessed for semiquantitative evaluation of brain atrophy and small vessel disease (SVD) markers. Cognitive performance was measured within 5 days of onset using Montreal Cognitive Assessment (MoCA) scores. Functional outcome analyses were adjusted for demographic variables, premorbid cognitive status, education level, vascular risk factors, neuroimaging characteristics, stroke severity, and MoCA scores. RESULTS: The median MoCA score was 22, and 63% of patients had cognitive impairment. Factors independently associated with cognitive impairment were education (odds ratios [OR], .79; confidence intervals [CI], .63-.99), smoking (OR, .26; 95%CI, .073-.89), and temporal horn atrophy (OR, 4.73; 95% CI, 1.66-13.49). Factors independently associated with poor functional outcome were total MoCA score (OR, .78; 95%CI, .62-.95) and the sum of 4 MoCA subscores (visuospatial/executive, attention, language, and orientation; OR, .72; 95%CI, .53-.92). The cutoff value of the sum of 4 MoCA subscores for predicting poor outcome was 13 points with 76.5% sensitivity and 81.1% specificity. CONCLUSIONS: Early cognitive impairment was common after minor ischemic stroke and was associated with preexisting temporal horn atrophy but not SVD markers. The sum of 4 MoCA subscores was useful in predicting the functional outcome.

DOI： 10.1016/j.jstrokecerebrovasdis.2020.104749

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OBJECTIVES: Cognitive assessment is not performed routinely in the acute stroke setting. We investigated factors associated with cognitive impairment and the differences between the Mini-Mental State Examination (MMSE) and Montreal Cognitive Assessment (MoCA) scores in patients with acute stroke. METHODS: In this prospective study, 881 consecutive patients (median age, 73 years) with acute stroke were enrolled. Clinical characteristics, such as education, vascular risk factors, premorbid cognitive status using the Informant Questionnaire on Cognitive Decline in the Elderly (IQCODE), and stroke severity, were assessed. Cognitive performance was measured using MMSE and MoCA within 5 days of stroke onset. RESULTS: Both MMSE and MoCA were feasible in 621 (70.5%) patients. Factors independently associated with nonfeasibility were age (odds ratio [OR]: 1.05; 95% confidence interval [CI]: 1.02-1.08), IQCODE score (OR: 1.02; 95%CI: 1.00-1.04), and National Institutes of Health Stroke Scale (NIHSS) score (OR, 1.16; 95%CI, 1.12-1.20). Impaired MoCA (with a cut-off <26/30) performance was observed in 544 of 621 (87.6%) patients. Factors independently associated with cognitive impairment were age (OR: 1.06; 95%CI: 1.03-1.10) and NIHSS score (OR: 1.34; 95%CI: 1.14-1.57). Eighty percent of patients with normal MMSE scores had an impaired MoCA score (MMSE-MoCA mismatch). The differences were highest in the visuospatial (94.8% versus 65.3%; P < .0001), recall (76.6% versus 35.6%; P < .0001), abstraction (82.5% versus 49.8%; P < .0001), and language (72.3% versus 65.9%; P < .0001) domains between the normal MMSE and MoCA group and MMSE-MoCA mismatch group. CONCLUSIONS: The MoCA can be particularly useful in patients with cognitive deficits undetectable on the MMSE in the acute stroke phase.

DOI： 10.1016/j.jstrokecerebrovasdis.2020.104688

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This study investigated the feasibility of a cognitive behavioral therapy (CBT) program for improving mood and quality of life in an older woman with mild cognitive impairment (MCI), depression, and anxiety. The program comprised eight 30-minute weekly sessions; interventions included behavioral activation, relaxation, and cognitive reconstruction, in which the patient's caregiver also participated. The patient's condition was assessed before and immediately after the intervention. After 3 and 12 months, the caregiver reported the patient's behavioral and psychological symptoms by using self-reported psychological scales for depression, anxiety, and quality of life. Although CBT helped to improve mood and quality of life in the short term (3 months), the results were not sustained over the long term (12 months). Even though improvement in psychological symptoms did not persist and only one patient with MCI was evaluated, these results suggest that CBT is a feasible nonpharmacological treatment option and provide preliminary support for wider use of CBT in Japan. CBT programs should be tailored to the needs of patients with MCI and dementia, and regular follow-up sessions should be used to evaluate program feasibility and improvement in patient mental health.

DOI： 10.1272/jnms.JNMS.2019_86-603

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Language：Japanese   Publisher：(有)科学評論社  

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Language：Japanese   Publisher：(有)科学評論社  

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Language：Japanese   Publisher：(株)ワールドプランニング  

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Other Link： https://search.jamas.or.jp/default/link?pub_year=2018&ichushi_jid=J02464&link_issn=&doc_id=20180710110001&doc_link_id=%2Faj2rsizd%2F2018%2F002906%2F002%2F0581-0587%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Faj2rsizd%2F2018%2F002906%2F002%2F0581-0587%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：English   Publishing type：Research paper (scientific journal)  

As the number of people with dementia in Japan continues to rise, family caregivers are experiencing an increasing care burden. Previous research has shown that this care burden can affect family caregivers' physical and mental health. Therefore, providing support for caregivers of family members with dementia has become an urgent issue in the country. The purpose of this study was to investigate the feasibility of applying STrAtegies for RelaTives (START), a psychosocial intervention programme developed in the UK to improve caregivers' moods and quality of life, to Japanese family caregivers. Specifically, in this paper, we provide a detailed description of the application of the Japanese version of START to a female caregiver. Our investigation found that the Japanese version of START is a feasible option for alleviating the mental and physical burden on family caregivers of patients with dementia. This result provides preliminary support for the wider application of START in Japan, as it can decrease care burden and improve the daily lives of caregivers of people with dementia. It also supports the development and implementation of other systems that can provide similar services for other caregivers.

DOI： 10.1111/psyg.12315

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Language：Japanese   Publisher：(公財)大和証券ヘルス財団  

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BACKGROUND: The presence of white matter lesions (WML) is an indicator of small vessel disease; however, the underlying pathological mechanisms are still unclear. We aimed to investigate the association of estimated glomerular filtration rate (eGFR) and urinary albumin-to-creatinine ratio (UACR) with WML severity in first-ever stroke patients. METHODS: We retrospectively enrolled 284 consecutive patients (177 male; median age 72years) admitted to our stroke center between May 2010 and January 2012. eGFR and UACR measurements were performed on admission. WML severity was assessed using the Fazekas classification. Severe WML was defined as a Fazekas grade of 2 or higher. The impact of eGFR and UACR on severe WML was evaluated using multiple logistic regression analysis. RESULTS: Age (P<0.0001), sex (P=0.0094), eGFR (P=0.0173), UACR (P=0.0001), hypertension (P=0.0436), and brain natriuretic peptide (P=0.0354) were significantly associated with severe WML. On multivariable logistic regression analysis, high UACR (≥39.6mg/g creatinine, P=0.039), but not low eGFR (≤74ml/min/1.73m2, P=0.3672), was independently associated with severe WML. Comparisons between the UACR levels showed that severe WML was more frequent in the UACR ≥300mg/g creatinine group than in the UACR <30.0mg/g creatinine group after multivariate adjustment (OR, 2.25; 95% CI, 1.04-5.00; P=0.039). However, there was no significant association between eGFR and severe WML. CONCLUSIONS: Our data suggest that high UACR, but not eGFR, is independently associated with severe WML.

DOI： 10.1016/j.jns.2017.01.011

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DOI： 10.1016/j.jns.2016.04.014

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Language：Japanese   Publisher：エーザイ(株)  

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Posterior cortical atrophy (PCA) is a rare neurodegenerative disorder that has cerebral atrophy in the parietal, occipital, or occipitotemporal cortices and is characterized by visuospatial and visuoperceptual impairments. The most cases are pathologically compatible with Alzheimer's disease (AD). We describe a case of PCA in which a combination of imaging methods, in conjunction with symptoms and neurological and neuropsychological examinations, led to its being diagnosed and to AD being identified as its probable cause. Treatment with donepezil for 6 months mildly improved alexia symptoms, but other symptoms remained unchanged. A 59-year-old Japanese woman with progressive alexia, visual deficit, and mild memory loss was referred to our neurologic clinic for the evaluation of right homonymous hemianopsia. Our neurological examination showed alexia, constructional apraxia, mild disorientation, short-term memory loss, and right homonymous hemianopsia. These findings resulted in a score of 23 (of 30) points on the Mini-Mental State Examination. Occipital atrophy was identified, with magnetic resonance imaging (MRI) showing left-side dominance. The MRI data were quantified with voxel-based morphometry, and PCA was diagnosed on the basis of these findings. Single photon emission computed tomography with (123)I-N-isopropyl-p-iodoamphetamine showed hypoperfusion in the corresponding voxel-based morphometry occipital lobes. Additionally, the finding of hypoperfusion in the posterior associate cortex, posterior cingulate gyrus, and precuneus was consistent with AD. Therefore, the PCA was considered to be a result of AD. We considered Lewy body dementia as a differential diagnosis because of the presence of hypoperfusion in the occipital lobes. However, the patient did not meet the criteria for Lewy body dementia during the course of the disease. We therefore consider including PCA in the differential diagnoses to be important for patients with visual deficit, cognitive impairment, and cerebral atrophy in the parietal, occipital, or occipitotemporal cortices. A combination of imaging methods, including MRI and single photon emission computed tomography, may help identify probable causes of PCA.

DOI： 10.1272/jnms.83.87

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Language：Japanese   Publisher：エーザイ(株)  

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Publishing type：Research paper (scientific journal)   Publisher：OMICS Publishing Group  

DOI： 10.4172/2155-9562.1000305

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Language：Japanese   Publisher：(株)ワールドプランニング  

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Other Link： https://search.jamas.or.jp/default/link?pub_year=2014&ichushi_jid=J02464&link_issn=&doc_id=20150121100011&doc_link_id=%2Faj2rsizd%2F2014%2F002512%2F012%2F1395-1399%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Faj2rsizd%2F2014%2F002512%2F012%2F1395-1399%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：English   Publishing type：Research paper (scientific journal)  

BACKGROUND/AIMS: Donepezil is an acetylcholinesterase inhibitor used to treat Alzheimer's disease (AD). In this study, we used a voxel-based specific regional analysis system for AD (VSRAD) to analyze the hippocampal volume and to assess the pharmacologic effects of donepezil as a disease modifier. METHODS: A total of 185 AD patients underwent MRI, 120 (43 men and 77 women, 77.8 ± 7.1 years) without and 65 (29 men and 36 women, 78.4 ± 6.0 years) with donepezil treatment. VSRAD was compared in both groups and against a database of 80 normal subjects. The Z-score was used to assess the degree of hippocampal atrophy. RESULTS: No significant difference between the groups was found for age, sex, or Z-scores, but a significant difference was found for mean Mini-Mental State Examination (MMSE) scores (p = 0.02, Student's t test). Single regression analysis showed no significant association between Z-scores and MMSE scores in the treated group (p = 0.494), but a significant association in the untreated group (p = 0.001) was observed. This implies that the MMSE score becomes lower when the Z-score is higher in the untreated group, whereas there is no significant trend in the treated group. CONCLUSION: Donepezil affects the relationship between hippocampal volume and cognitive function and may therefore have a pharmacologic effect as a disease modifier.

DOI： 10.1159/000358510

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Language：English   Publishing type：Research paper (scientific journal)  

The community consultation center was established as the core facility for a project entitled "Community Support Network for Citizens with Mild Cognitive Impairment (MCI) and Dementia." This study reports on our center's activity and user outcomes. Users consulted with medical staff regarding their memory problems and were self-screened using a touch-panel computer assisted screening tool (TPST). Dementia was suspected when the TPST score was 12 points or below, and the Mini-Mental State Examination (MMSE) was conducted by our onsite clinical psychologists, which served as the gold standard. All reports were provided to user's primary care physicians, or a nearby medical institute if users did not have a primary care physician. Patient outcomes were obtained from participating medical institutes. Informed consent was obtained for all users. In the four-year period, 2802 users visited the center. Of them, 1565 registered (men/women=519/1046; mean age, 74 years). Of 1354 people who used TPST, 622 (45.9%) scored 12 points or below. 409 confirmed diagnoses from the medical institutes revealed MCI in 11.2%, Alzheimer's disease in 37.1%, and vascular dementia in 8.0%. Among the 207 users who had no primary care physicians at consultation, 43 (20.8%) were diagnosed with MCI or dementia. Approximately half of the users who took the TPST were suspected of dementia following interview by a clinical psychologist. Both MCI and dementia were confirmed by the medical institutes in 59.6% of users. We conclude that our consultation center plays a pivotal role in early diagnosis of MCI and dementia.

DOI： 10.1016/j.archger.2014.06.003

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Language：Japanese   Publisher：(株)ワールドプランニング  

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Other Link： https://search.jamas.or.jp/default/link?pub_year=2013&ichushi_jid=J02464&link_issn=&doc_id=20130411100004&doc_link_id=%2Faj2rsizd%2F2013%2F002403%2F005%2F0245-0250%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Faj2rsizd%2F2013%2F002403%2F005%2F0245-0250%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：日本医科大学医学会  

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Other Link： https://search.jamas.or.jp/default/link?pub_year=2013&ichushi_jid=J04260&link_issn=&doc_id=20130218370003&doc_link_id=%2Fcw1nimed%2F2013%2F000901%2F004%2F0014-0019%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fcw1nimed%2F2013%2F000901%2F004%2F0014-0019%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：(一社)日本認知症ケア学会  

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Other Link： https://search.jamas.or.jp/default/link?pub_year=2012&ichushi_jid=J04288&link_issn=&doc_id=20120806240012&doc_link_id=%2Fcx1dmnta%2F2012%2F001102%2F013%2F0544-0550%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fcx1dmnta%2F2012%2F001102%2F013%2F0544-0550%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：English   Publishing type：Research paper (scientific journal)  

BACKGROUND: As society ages, early detection of dementia is becoming increasingly important. Many hospitals have opened memory-loss clinics, and various new approaches for early examination and appropriate diagnosis are being tried. However, these memory-loss clinics are ultimately part of the hospital establishment, implying that, in addition to the burdens of time and effort to undergo examinations and consultations, patients might have a certain psychological resistance. With a grant from the Ministry of Education, Culture, Sports, Science and Technology, the Institute of Development and Aging Science at Nippon Medical School has opened a center called the Community Consultation Center for Citizens with Mild Cognitive Impairment and Dementia, which is a dementia-related center outside the regular hospital. This center has been developing a system that makes consultations easier. We performed a retrospective follow-up study that aimed to determine how much this approach contributes to the early detection of dementia compared with outpatient visits to university hospitals. METHODS: Persons who were found to have organic brain syndrome (defined as organic diseases related to dementia, including mild cognitive impairment) after visiting the Consultation Center during the survey period were referred to as the Consultation Center group, and persons who were found to have organic brain syndrome after an initial visit to the Department of Neurology at Nippon Medical School Musashi Kosugi Hospital were referred to as the Hospital group. We compared the groups in terms of sex, age, Mini-Mental State Examination (MMSE) score, and subclassification by means of the t-test and χ(2) test. RESULTS: Both the mean MMSE score (p<0.001) and percentage of subjects with an MMSE score of 24 points of higher (p=0.007) were significantly higher in the Consultation Center group than in the Hospital group. CONCLUSIONS: Consultations can be made more casually at the Consultation Center than at hospitals. Our results suggest that more casual consultations contribute to the early detection of dementia.

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Language：Japanese   Publisher：(株)全日本病院出版会  

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Other Link： https://search.jamas.or.jp/default/link?pub_year=2011&ichushi_jid=J03505&link_issn=&doc_id=20110621220018&doc_link_id=%2Fap5meree%2F2011%2F000132%2F018%2F0123-0129%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fap5meree%2F2011%2F000132%2F018%2F0123-0129%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：老年期認知症研究会  

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Language：Japanese   Publisher：(株)ワールドプランニング  

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Other Link： https://search.jamas.or.jp/default/link?pub_year=2009&ichushi_jid=J02464&link_issn=&doc_id=20090713160008&doc_link_id=%2Faj2rsizd%2F2009%2F002006%2F009%2F0651-0659%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Faj2rsizd%2F2009%2F002006%2F009%2F0651-0659%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：(株)ワールドプランニング  

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Other Link： https://search.jamas.or.jp/default/link?pub_year=2008&ichushi_jid=J02464&link_issn=&doc_id=20080905100007&doc_link_id=%2Faj2rsizd%2F2008%2F001908%2F008%2F0877-0883%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Faj2rsizd%2F2008%2F001908%2F008%2F0877-0883%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：English   Publishing type：Research paper (scientific journal)  

BACKGROUND AND AIM: In Alzheimer's disease (AD), regional cerebral blood flow (rCBF) in the posterior cingulate gyrus and precuneus has been reported to decrease even at a very early stage. We performed a multicentre SPECT study to evaluate the discrimination ability of an easy Z-score imaging system (eZIS) by detecting an rCBF decrease in this area with a common normal database between very early AD patients at the stage of mild cognitive impairment and age-matched healthy volunteers. METHODS: Brain perfusion SPECT images of 40 Alzheimer's disease patients and 40 healthy volunteers were acquired from four gamma camera systems in different institutions. Systematic differences of SPECT images between different gamma cameras were corrected using conversion maps calculated from the SPECT images of the same brain phantom. Ten observers with various degrees of expertise graded eZIS results for receiver operating characteristic (ROC) curves. ROC curves for a positive Z-score in the volume of interest (VOI) of the posterior cingulate gyrus and precuneus were also analysed. RESULTS: An area under the ROC curve value (AZ) for ten observers showed the highest value of 0.866 on average with the smallest standard deviation of 0.027 in the condition of the lower threshold of a Z-score map of 2 without superimposition of VOI. Automated analysis of a Z-score in the VOI showed an AZ value of 0.895. CONCLUSION: Since the degree of expertise of the observers with respect to reading eZIS did not influence the performance and an eZIS can use a common normal database by converting site-specific SPECT data to the core data, the eZIS was considered to be very useful for diagnosing early AD in routine studies in many institutions.

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Language：Japanese   Publisher：(株)ワールドプランニング  

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Other Link： https://search.jamas.or.jp/default/link?pub_year=2007&ichushi_jid=J02464&link_issn=&doc_id=20070202230010&doc_link_id=%2Faj2rsizd%2F2007%2F001801%2F011%2F0061-0067%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Faj2rsizd%2F2007%2F001801%2F011%2F0061-0067%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：English   Publishing type：Research paper (scientific journal)  

OBJECTIVES: Baseline brain single-photon emission computed tomography (SPECT) can predict mild cognitive impairment (MCI) patients at risk for progressive MCI (PMCI). METHODS: Twenty-eight subjects [12 MCI, 6 with probable Alzheimer's Disease (AD), and 10 normal subjects] underwent baseline brain SPECT and were clinically followed for a mean period of 36 months. RESULTS: Of 12 MCI patients, 6 progressed to PMCI and 6 remained stable. Baseline SPECT identified asymmetric perfusion reduction in the parahippocampus (-5%), lateral parietal (-8%), and posterior cingulate (-11%) cortices--reductions consistent with that of mild AD--in five of the six PMCI patients. Significant perfusion reduction was observed particularly in the frontal cortices of probable AD when compared with PMCI (P < 0.05). CONCLUSION: Baseline SPECT can identify brain perfusion abnormalities among patients with MCI for progression to PMCI. This imaging modality may aid in MCI treatment stratification.

PubMed

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Language：Japanese   Publisher：(一財)博慈会老人病研究所  

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Other Link： https://search.jamas.or.jp/default/link?pub_year=2004&ichushi_jid=J02710&link_issn=&doc_id=20040716320010&doc_link_id=%2Fdh7presy%2F2004%2F001301%2F010%2F0134-0137%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fdh7presy%2F2004%2F001301%2F010%2F0134-0137%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Language：Japanese   Publisher：(有)科学評論社  

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Language：Japanese   Publisher：(有)科学評論社  

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Language：Japanese   Publisher：(株)ワールドプランニング  

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Language：Japanese   Publisher：(一社)日本脳循環代謝学会  

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Language：Japanese   Publisher：(一社)日本脳循環代謝学会  

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Language：English   Publishing type：Research paper (scientific journal)  

To investigate the relationship between prognosis of aphasia and neuronal damage in the cerebral cortex, we evaluated the distribution of central-type benzodiazepine receptor (BZR) binding in post-stroke aphasics with [123I]iomazenil and SPECT. We performed iomazenil SPECT in six aphasic patients (aged from 45 to 75 years; all right-handed) with unilateral left cerebral infarction. Three patients showed signs of Broca's aphasia and the other three Wernicke's aphasia. Cerebral blood flow (CBF) imaging was performed with [123I]iodoamphetamine (IMP). The regions of interest (ROIs) on both images were set in the cerebral cortex, cerebellar cortex and language-relevant area in both hemispheres. Three patients were classified in the mild prognosis group and the other three in the moderate prognosis group. The left language-relevant area was more closely concerned with the difference in aphasic symptoms than the right one in both BZR and CBF distribution, but the ipsilateral to the contralateral ratio (I/C ratio) in the language-relevant areas in the BZR distribution was significantly lower in the moderate prognosis group than in the mild prognosis group, although no difference was seen for these values between the two groups in the CBF distribution. These results suggest that BZR imaging, which makes possible an increase in neuronal cell viability in the cerebral cortex, is useful not only for clarifying the aphasic symptoms but also for evaluating the prognosis of aphasia in patients with cerebral infarction.

PubMed

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Language：Japanese   Publisher：(一社)日本脳循環代謝学会  

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Language：Japanese   Publisher：(一社)日本脳循環代謝学会  

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Language：Japanese   Publisher：日本医科大学医学会  

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Other Link： https://search.jamas.or.jp/default/link?pub_year=1998&ichushi_jid=J01018&link_issn=&doc_id=19980423190003&doc_link_id=10.1272%2Fjnms1923.65.140&url=https%3A%2F%2Fdoi.org%2F10.1272%2Fjnms1923.65.140&type=J-STAGE&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00007_3.gif

Language：Japanese   Publisher：(株)医薬ジャーナル社  

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Language：Japanese   Publisher：日本メジフィジックス(株)  

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Language：Japanese   Publisher：(一社)日本核医学会  

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Other Link： https://search.jamas.or.jp/default/link?pub_year=1996&ichushi_jid=J00251&link_issn=&doc_id=19961007330007&doc_link_id=1572261549587398528&url=https%3A%2F%2Fcir.nii.ac.jp%2Fcrid%2F1572261549587398528&type=CiNii&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00003_1.gif

Language：Japanese   Publisher：(株)東京医学社  

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Language：Japanese   Publisher：(一社)日本頭痛学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：English   Publisher：(一社)日本核医学会  

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Language：Japanese   Publisher：(株)ワールドプランニング  

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Language：Japanese   Publisher：(一社)日本認知症学会  

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Language：Japanese   Publisher：(一社)日本抗加齢医学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本脳循環代謝学会  

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Language：Japanese   Publisher：(一社)日本認知症学会  

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Language：Japanese   Publisher：(株)ワールドプランニング  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本神経治療学会  

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Language：Japanese   Publisher：(株)ワールドプランニング  

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Language：Japanese   Publisher：(一社)日本認知症ケア学会  

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Language：Japanese   Publisher：(一社)日本認知症ケア学会  

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Language：Japanese   Publisher：(一社)日本認知症ケア学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(有)科学評論社  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本頭痛学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本頭痛学会  

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Language：Japanese   Publisher：(一社)日本認知症学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本頭痛学会  

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Language：Japanese   Publisher：(一社)日本神経治療学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本脳循環代謝学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本頭痛学会  

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Language：Japanese   Publisher：(一社)日本脳循環代謝学会  

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Language：Japanese   Publisher：(一社)日本頭痛学会  

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Language：Japanese   Publisher：(一社)日本神経治療学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本頭痛学会  

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Language：Japanese   Publisher：(公社)日本皮膚科学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本脳循環代謝学会  

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Language：Japanese   Publisher：日本メジフィジックス(株)  

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Language：Japanese   Publisher：日本医科大学医学会  

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Language：Japanese   Publisher：(株)ワールドプランニング  

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Language：Japanese   Publisher：(一社)日本脳循環代謝学会  

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Language：Japanese   Publisher：(一社)日本内科学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本脳卒中学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本神経治療学会  

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Language：Japanese   Publisher：日本内科学会-関東地方会  

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Language：Japanese   Publisher：(一社)日本内科学会  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：日本メジフィジックス(株)  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：(一社)日本透析医学会  

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Language：Japanese   Publisher：(一社)日本老年医学会  

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Language：Japanese   Publisher：(株)ワールドプランニング  

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Language：Japanese   Publisher：(株)ワールドプランニング  

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Language：Japanese   Publisher：(一社)日本神経学会  

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Language：Japanese   Publisher：日本医科大学医学会  

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Language：Japanese   Publisher：(株)中外医学社  

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