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Revolutionizing Alzheimer's Diagnosis and Management: The Dawn of Biomarker-Based Precision Medicine. 阿尔茨海默氏症诊断和管理的革命:基于生物标记的精准医学的曙光。
Pub Date : 2024-10-01 Epub Date: 2024-10-28 DOI: 10.12779/dnd.2024.23.4.188
Hyuk Sung Kwon, Hyun-Jung Yu, Seong-Ho Koh

Alzheimer's disease (AD), a leading cause of dementia, presents a formidable global health challenge intensified by the aging population. This review encapsulates the evolving landscape of AD diagnosis and treatment with a special focus on the innovative role of fluid biomarkers. Pathologically, AD is marked by amyloid beta (Aβ) plaques and neurofibrillary tangles of hyperphosphorylated tau, which lead to synaptic dysfunction, neuronal loss, and cognitive decline. These pathological changes, commencing decades before symptom onset, underscore the need for early detection and intervention. Diagnosis traditionally relies on clinical assessment, neuropsychological testing, and neuroimaging techniques. However, fluid biomarkers in cerebrospinal fluid and blood, such as various forms of Aβ, total tau, phosphorylated tau, and neurofilament light chain, are emerging as less invasive, cost-effective diagnostic tools. These biomarkers are pivotal for early diagnosis, differential diagnosis, disease progression monitoring, and treatment response evaluation. The treatment landscape is shifting toward personalized medicine, highlighted by advancements in Aβ immunotherapies, such as lecanemab and donanemab. Demonstrating efficacy in phase III clinical trials, these therapies hold promise as tailored treatment strategies based on individual biomarker profiles. The integration of fluid biomarkers into clinical practice represents a significant advance in AD management, providing the potential for early and precise diagnosis, coupled with personalized therapeutic approaches. This heralds a new era in combating this debilitating disease.

阿尔茨海默病(AD)是导致痴呆症的主要原因之一,它给全球健康带来了严峻的挑战,而人口老龄化又加剧了这一挑战。本综述概括了阿尔茨海默病诊断和治疗的演变情况,并特别关注液体生物标志物的创新作用。从病理学角度看,注意力缺失症的特征是淀粉样 beta(Aβ)斑块和高磷酸化 tau 神经纤维缠结,它们会导致突触功能障碍、神经元缺失和认知能力下降。这些病理变化在症状出现前几十年就已开始,因此需要及早发现和干预。诊断传统上依赖于临床评估、神经心理学测试和神经影像学技术。然而,脑脊液和血液中的体液生物标志物,如各种形式的 Aβ、总 tau、磷酸化 tau 和神经丝轻链,正在成为创伤性较小、成本效益较高的诊断工具。这些生物标志物对于早期诊断、鉴别诊断、疾病进展监测和治疗反应评估至关重要。Aβ 免疫疗法(如 lecanemab 和 donanemab)的进步凸显了治疗格局正在向个性化医疗转变。这些疗法在 III 期临床试验中显示出疗效,有望成为基于个体生物标志物特征的定制治疗策略。将体液生物标志物纳入临床实践代表着注意力缺失症治疗的重大进展,为早期精确诊断和个性化治疗方法提供了可能。这预示着抗击这种使人衰弱的疾病的新时代即将到来。
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引用次数: 0
Differential Validity of K-MoCA-22 Compared to K-MoCA-30 and K-MMSE for Screening MCI and Dementia. K-MoCA-22 与 K-MoCA-30 和 K-MMSE 在筛查 MCI 和痴呆症方面的差异有效性。
Pub Date : 2024-10-01 Epub Date: 2024-10-29 DOI: 10.12779/dnd.2024.23.4.236
Haeyoon Kim, Kyung-Ho Yu, Yeonwook Kang

Background and purpose: Since the onset of the coronavirus disease 2019 pandemic, the Telephone-Montreal Cognitive Assessment (T-MoCA) has gained popularity as a remote cognitive screening tool. T-MoCA includes items from the original MoCA (MoCA-30), excluding those requiring visual stimuli, resulting in a maximum score of 22 points. This study aimed to assess whether the T-MoCA items (MoCA-22) demonstrate comparable discriminatory power to MoCA-30 and Mini-Mental State Examination (MMSE) in screening for mild cognitive impairment (MCI) and dementia.

Methods: Participants included 233 cognitively normal (CN) individuals, 175 with MCI, and 166 with dementia. All completed the Korean-MoCA-30 (K-MoCA-30) and Korean-MMSE (K-MMSE), with the Korean-MoCA-22 (K-MoCA-22) scores derived from the K-MoCA-30 responses. A receiver operating characteristic (ROC) curve analysis was conducted.

Results: K-MoCA-22 showed a strong correlation with K-MoCA-30 and a moderate correlation with K-MMSE. Scores decreased progressively from CN to MCI and dementia, with significant differences between groups, consistent with K-MoCA-30 and K-MMSE. The study also explored modified K-MoCA-22 index scores across 5 cognitive domains. ROC curve analysis revealed that the area under the curve (AUC) for K-MoCA-22 was significantly smaller than that for K-MoCA-30 in distinguishing both MCI and dementia from CN. However, no significant difference in AUC was found between K-MoCA-22 and K-MMSE, indicating similar discriminatory power. Additionally, the discriminability of K-MoCA-22 varied by education level.

Conclusions: These results indicate that K-MoCA-22, although slightly less effective than K-MoCA-30, still shows good to excellent discriminatory power and is comparable to K-MMSE in screening for MCI and dementia.

背景和目的:自 2019 年冠状病毒疾病大流行以来,电话-蒙特利尔认知能力评估(T-MoCA)作为一种远程认知能力筛查工具广受欢迎。T-MoCA 包括原 MoCA(MoCA-30)中的项目,但不包括需要视觉刺激的项目,因此最高分为 22 分。本研究旨在评估T-MoCA项目(MoCA-22)在筛查轻度认知障碍(MCI)和痴呆症方面是否表现出与MoCA-30和迷你精神状态检查(MMSE)相当的鉴别力:参与者包括 233 名认知能力正常 (CN) 的个体、175 名 MCI 患者和 166 名痴呆症患者。所有人都完成了韩国-MoCA-30(K-MoCA-30)和韩国-MMSE(K-MMSE),其中韩国-MoCA-22(K-MoCA-22)的得分来自于 K-MoCA-30 的反应。结果显示,K-MoCA-22 显示出很强的预测能力:结果:K-MoCA-22 与 K-MoCA-30 呈较强相关性,与 K-MMSE 呈中等相关性。从 CN 到 MCI 和痴呆,得分逐渐下降,组间差异显著,与 K-MoCA-30 和 K-MMSE 一致。研究还探讨了 5 个认知领域的修正 K-MoCA-22 指数得分。ROC 曲线分析显示,在区分 MCI 和痴呆与 CN 方面,K-MoCA-22 的曲线下面积(AUC)明显小于 K-MoCA-30。但是,K-MoCA-22 和 K-MMSE 的 AUC 没有明显差异,这表明两者具有相似的鉴别力。此外,K-MoCA-22 的判别能力因教育水平而异:这些结果表明,在筛查 MCI 和痴呆症方面,K-MoCA-22 虽然略逊于 K-MoCA-30,但仍显示出良好至卓越的鉴别力,与 K-MMSE 不相上下。
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引用次数: 0
Korea-Registries to Overcome Dementia and Accelerate Dementia Research (K-ROAD): A Cohort for Dementia Research and Ethnic-Specific Insights. 韩国-克服痴呆症和加速痴呆症研究(K-ROAD):痴呆症研究和特定种族洞察的队列。
Pub Date : 2024-10-01 Epub Date: 2024-10-22 DOI: 10.12779/dnd.2024.23.4.212
Hyemin Jang, Daeun Shin, Yeshin Kim, Ko Woon Kim, Juyoun Lee, Jun Pyo Kim, Hee Jin Kim, Soo Hyun Cho, Si Eun Kim, Duk L Na, Sang Won Seo

Background and purpose: Dementia, particularly Alzheimer's disease, is a significant global health concern, with early diagnosis and treatment development being critical goals. While numerous cohorts have advanced dementia research, there is a lack of comprehensive data on ethnic differences, particularly for the Korean population. The Korea-Registries to Overcome Dementia and Accelerate Dementia Research (K-ROAD) aims to establish a large-scale, hospital-based dementia cohort to address this gap, with a focus on understanding disease progression, developing early diagnostics, and supporting treatment advancements specific to the Korean population.

Methods: K-ROAD comprises multiple prospective cohorts. Participants underwent clinical evaluations, neuroimaging, and biomarker analysis, with data collected on a range of clinical and genomic markers.

Results: As of December 2023, K-ROAD has recruited over 5,800 participants, including individuals across the Alzheimer's clinical syndrome, subcortical vascular cognitive impairment, and frontotemporal dementia spectra. Preliminary findings highlight significant ethnic differences in amyloid positivity, cognitive decline, and biomarker profiles, compared to Western cohorts.

Conclusions: The K-ROAD cohort offers a unique and critical resource for dementia research, providing insights into ethnic-specific disease characteristics and biomarker profiles. These findings will contribute to the development of personalized diagnostic and therapeutic approaches to dementia, enhancing global understanding of the disease.

背景和目的:痴呆症,尤其是阿尔茨海默病,是全球关注的重大健康问题,早期诊断和治疗发展是关键目标。虽然许多队列研究推动了痴呆症的研究,但缺乏有关种族差异的全面数据,尤其是韩国人口的数据。韩国-克服痴呆症和加速痴呆症研究(Korea-Registries to Overcome Dementia and Accelerated Dementia Research,K-ROAD)旨在建立一个大规模的、以医院为基础的痴呆症队列,以弥补这一不足,重点是了解疾病进展、开发早期诊断方法以及支持韩国人群的治疗进展:K-ROAD由多个前瞻性队列组成。方法:K-ROAD由多个前瞻性队列组成,参与者接受了临床评估、神经影像学检查和生物标志物分析,并收集了一系列临床和基因组标志物数据:截至 2023 年 12 月,K-ROAD 共招募了 5800 多名参与者,其中包括阿尔茨海默氏症临床综合征、皮层下血管性认知障碍和额颞叶痴呆谱系的患者。初步研究结果表明,与西方队列相比,在淀粉样蛋白阳性率、认知能力下降和生物标志物特征方面存在明显的种族差异:K-ROAD队列为痴呆症研究提供了独特而重要的资源,使人们能够深入了解特定种族的疾病特征和生物标志物特征。这些发现将有助于开发痴呆症的个性化诊断和治疗方法,增进全球对该疾病的了解。
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引用次数: 0
A Case of Late-Onset De Novo Huntington's Disease Diagnosed via 18F-FDG PET. 一例通过 18F-FDG PET 诊断的晚期新发亨廷顿氏病病例
Pub Date : 2024-10-01 Epub Date: 2024-10-14 DOI: 10.12779/dnd.2024.23.4.245
Jae Young Joo, Sun Young Chae, Jae Seung Kim, Hyung-Ji Kim
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引用次数: 0
Lecanemab: Appropriate Use Recommendations by Korean Dementia Association. 来卡尼单抗:韩国痴呆症协会的适当使用建议。
Pub Date : 2024-10-01 Epub Date: 2024-10-29 DOI: 10.12779/dnd.2024.23.4.165
Kee Hyung Park, Geon Ha Kim, Chi-Hun Kim, Seong-Ho Koh, So Young Moon, Young Ho Park, Sang Won Seo, Bora Yoon, Jae-Sung Lim, Byeong C Kim, Hee-Jin Kim, Hae Ri Na, YongSoo Shim, YoungSoon Yang, Chan-Nyoung Lee, Hak Young Rhee, San Jung, Jee Hyang Jeong, Hojin Choi, Dong Won Yang, Seong Hye Choi

Lecanemab (product name Leqembi®) is an anti-amyloid monoclonal antibody treatment approved for use in Korea for patients with mild cognitive impairment (MCI) or mild dementia due to Alzheimer's disease. The Korean Dementia Association has created recommendations for the appropriate use of lecanemab to assist clinicians. These recommendations include selecting patients for administration, necessary pre-administration tests and preparations, administration methods, monitoring for amyloid related imaging abnormalities (ARIA), and communication with patients and caregivers. Lecanemab is recommended for patients with MCI or mild dementia who confirmed positive amyloid biomarkers, and should not be administered to patients with severe hypersensitivity to lecanemab or those unable to undergo magnetic resonance imaging (MRI) evaluation. To predict the risk of ARIA before administration, apolipoprotein E genotyping is conducted, and regular brain MRI evaluations are recommended to monitor for ARIA during treatment. The most common adverse reactions are infusion-related reactions, which require appropriate management upon occurrence. Additional caution is needed when co-administering with anticoagulants or tissue plasminogen activator due to the risk of macrohemorrhage. Clinicians should consider the efficacy and necessary conditions for administration, as well as the safety of lecanemab, to make a comprehensive decision regarding its use.

来卡尼单抗(产品名称 Leqembi®)是一种抗淀粉样蛋白单克隆抗体治疗药物,已获准在韩国用于治疗阿尔茨海默病引起的轻度认知障碍(MCI)或轻度痴呆患者。韩国痴呆症协会制定了适当使用莱卡尼单抗的建议,以帮助临床医生。这些建议包括选择给药患者、必要的给药前检查和准备、给药方法、监测淀粉样蛋白相关成像异常(ARIA)以及与患者和护理人员沟通。建议淀粉样蛋白生物标志物呈阳性的 MCI 或轻度痴呆患者使用来卡尼单抗,对来卡尼单抗严重过敏或无法进行磁共振成像(MRI)评估的患者不应使用来卡尼单抗。为在用药前预测ARIA风险,建议进行载脂蛋白E基因分型,并在治疗期间定期进行脑磁共振成像评估以监测ARIA。最常见的不良反应是输液相关反应,发生时需要适当处理。由于存在大出血的风险,与抗凝剂或组织纤溶酶原激活剂合用时需要格外谨慎。临床医生应综合考虑来卡尼单抗的疗效、必要的给药条件以及安全性,以全面决定是否使用该药。
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引用次数: 0
Development of the Diagnostic Matrix of the Seoul Cognitive Status Test, Compared to Traditional Paper-and-Pencil Neuropsychological Tests. 首尔认知状况测试诊断矩阵的开发,与传统纸笔神经心理学测试的比较。
Pub Date : 2024-10-01 Epub Date: 2024-10-23 DOI: 10.12779/dnd.2024.23.4.224
Seunghee Na, Young Ju Kim, Si Eun Kim, Na-Yeon Jung, Seung Joo Kim, Hee Jin Kim, Joon Soo Shin, Duk L Na, Sang Won Seo, Yeshin Kim, Eek-Sung Lee

Background and purpose: We aimed to develop the diagnostic matrix of the Seoul Cognitive Status Test (SCST) and compare its performance with traditional paper-and-pencil neuropsychological tests, including the Seoul Neuropsychological Screening Battery-II (SNSB-II) and the Korean version of the Consortium to Establish a Registry for Alzheimer's Disease (CERAD-K).

Methods: We recruited 197 participants from the head-to-head SCST-SNSB cohort, and 204 participants from the head-to-head SCST-CERAD cohort. They underwent either SNSB-II or CERAD-K, in addition to SCST. The diagnostic matrix was developed by combining cognitive function, determined by neuropsychological tests, and activities of daily living (ADL), determined by Instrumental-ADL scales.

Results: The diagnostic agreement between the SCST and the SNSB-II was 83.9% (weighted kappa=0.87). The agreement between the SCST and the CERAD-K was 84.3% (weighted kappa=0.88). In the SCST-SNSB cohort, all differences in SCST scores between the cognitively unimpaired (CU), mild cognitive impairment (MCI), and dementia diagnosed with the SNSB-II were significant in all cognitive domains (all p<0.01), except for the executive domain between CU and MCI (p=0.145). In the SCST-CERAD cohort, all differences in SCST scores between the 3 groups diagnosed with the CERAD-K were significant in all cognitive domains (all p<0.01), except for the language and visuospatial domains between MCI and dementia (p=0.169 and p=0.778, respectively).

Conclusions: Our findings suggest that the tablet-based SCST may be another option to traditional paper-and-pencil neuropsychological tests, especially in situations where time and space are relatively limited, and neuropsychological testing specialists are not available.

背景和目的:我们旨在开发首尔认知状态测试(SCST)的诊断矩阵,并将其与传统的纸笔神经心理测试(包括首尔神经心理筛查电池-II(SNSB-II)和韩国版阿尔茨海默病登记联盟(CERAD-K))进行比较:我们从头对头 SCST-SNSB 队列中招募了 197 名参与者,从头对头 SCST-CERAD 队列中招募了 204 名参与者。除 SCST 外,他们还接受了 SNSB-II 或 CERAD-K 检查。诊断矩阵由神经心理测试确定的认知功能和工具-ADL量表确定的日常生活活动(ADL)结合而成:SCST 和 SNSB-II 的诊断一致性为 83.9%(加权卡帕=0.87)。SCST和CERAD-K之间的一致性为84.3%(加权卡帕=0.88)。在SCST-SNSB队列中,认知功能未受损者(CU)、轻度认知功能受损者(MCI)和使用SNSB-II诊断的痴呆者之间的SCST评分在所有认知领域的差异均显著(所有pp=0.145)。在SCST-CERAD队列中,使用CERAD-K诊断的3个组别之间的SCST得分差异在所有认知领域均有显著性(所有pp分别=0.169和p=0.778):我们的研究结果表明,基于平板电脑的 SCST 可能是传统纸笔神经心理测试的另一种选择,尤其是在时间和空间相对有限且没有神经心理测试专家的情况下。
{"title":"Development of the Diagnostic Matrix of the Seoul Cognitive Status Test, Compared to Traditional Paper-and-Pencil Neuropsychological Tests.","authors":"Seunghee Na, Young Ju Kim, Si Eun Kim, Na-Yeon Jung, Seung Joo Kim, Hee Jin Kim, Joon Soo Shin, Duk L Na, Sang Won Seo, Yeshin Kim, Eek-Sung Lee","doi":"10.12779/dnd.2024.23.4.224","DOIUrl":"https://doi.org/10.12779/dnd.2024.23.4.224","url":null,"abstract":"<p><strong>Background and purpose: </strong>We aimed to develop the diagnostic matrix of the Seoul Cognitive Status Test (SCST) and compare its performance with traditional paper-and-pencil neuropsychological tests, including the Seoul Neuropsychological Screening Battery-II (SNSB-II) and the Korean version of the Consortium to Establish a Registry for Alzheimer's Disease (CERAD-K).</p><p><strong>Methods: </strong>We recruited 197 participants from the head-to-head SCST-SNSB cohort, and 204 participants from the head-to-head SCST-CERAD cohort. They underwent either SNSB-II or CERAD-K, in addition to SCST. The diagnostic matrix was developed by combining cognitive function, determined by neuropsychological tests, and activities of daily living (ADL), determined by Instrumental-ADL scales.</p><p><strong>Results: </strong>The diagnostic agreement between the SCST and the SNSB-II was 83.9% (weighted kappa=0.87). The agreement between the SCST and the CERAD-K was 84.3% (weighted kappa=0.88). In the SCST-SNSB cohort, all differences in SCST scores between the cognitively unimpaired (CU), mild cognitive impairment (MCI), and dementia diagnosed with the SNSB-II were significant in all cognitive domains (all <i>p</i><0.01), except for the executive domain between CU and MCI (<i>p</i>=0.145). In the SCST-CERAD cohort, all differences in SCST scores between the 3 groups diagnosed with the CERAD-K were significant in all cognitive domains (all <i>p</i><0.01), except for the language and visuospatial domains between MCI and dementia (<i>p</i>=0.169 and <i>p</i>=0.778, respectively).</p><p><strong>Conclusions: </strong>Our findings suggest that the tablet-based SCST may be another option to traditional paper-and-pencil neuropsychological tests, especially in situations where time and space are relatively limited, and neuropsychological testing specialists are not available.</p>","PeriodicalId":72779,"journal":{"name":"Dementia and neurocognitive disorders","volume":"23 4","pages":"224-235"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11538856/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142607691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Choline Alfoscerate on the Progression From Mild Cognitive Impairment to Dementia: Distributed Network Analysis of a Multicenter Korean Database Using a Common Data Model. 阿佛斯甘酸胆碱对轻度认知障碍进展为痴呆症的影响:使用通用数据模型对韩国多中心数据库进行分布式网络分析。
Pub Date : 2024-10-01 Epub Date: 2024-10-07 DOI: 10.12779/dnd.2024.23.4.202
Jung-Min Pyun, Inho Lee, Kyungbok Lee, Min-Ho Kim, ChulHyoung Park, Hyeon-Jong Yang

Background and purpose: Choline alfoscerate (CA) is an acetylcholine precursor known for its beneficial effect on cognition in patient with Alzheimer's disease dementia (ADD). However, there is little evidence of its effects in patients with mild cognitive impairment (MCI). We assessed the influence of CA on the progression from MCI to all-cause dementia or ADD in three observational Korean databases using a Common Data Model (CDM).

Methods: Patients who were diagnosed with MCI and were aged over 60 years were included. After propensity score matching, 3,062 matched pairs patients using CA use and those not using CA were included. The Cox regression model was used to analyze the hazard ratio (HR) of CA use for conversion from MCI to all-cause dementia or ADD. Subgroup analyses were performed based on sex, acetylcholine esterase inhibitor (AchEI) use, and donepezil use.

Results: A meta-analysis across three hospitals revealed that CA use was not associated with the progression from MCI to all-cause dementia (hazard ratio [HR], 0.93; 95% confidence interval [CI], 0.59-1.26) or ADD (HR, 1.05; 95% CI, 0.51-1.59). Subgroup analyses revealed that CA use was not related to progression to all-cause dementia or ADD when stratified by sex, AchEI use, and donepezil use.

Conclusions: In this multicenter cohort study based on the Observational Medical Outcomes Partnership CDM real-world data, no association was noted between CA use and disease progression from MCI to all-cause dementia or ADD.

背景和目的:阿磷脂酸胆碱(CA)是一种乙酰胆碱前体,因其对阿尔茨海默病痴呆症(ADD)患者的认知能力有益而闻名。然而,几乎没有证据表明它对轻度认知障碍(MCI)患者有影响。我们使用通用数据模型(CDM)在韩国的三个观察性数据库中评估了 CA 对 MCI 发展为全因痴呆或 ADD 的影响:方法:纳入被诊断为MCI且年龄超过60岁的患者。方法:纳入被诊断为 MCI 且年龄在 60 岁以上的患者,经过倾向得分匹配后,纳入了 3,062 对使用 CA 和未使用 CA 的配对患者。采用 Cox 回归模型分析使用 CA 与 MCI 转为全因痴呆或 ADD 的危险比 (HR)。根据性别、乙酰胆碱酯酶抑制剂(AchEI)的使用情况和多奈哌齐的使用情况进行了分组分析:三家医院的荟萃分析显示,CA的使用与MCI发展为全因痴呆(危险比[HR],0.93;95%置信区间[CI],0.59-1.26)或ADD(HR,1.05;95%置信区间[CI],0.51-1.59)无关。亚组分析显示,按性别、AchEI使用情况和多奈哌齐使用情况进行分层后,CA的使用与全因痴呆或ADD的进展无关:在这项基于观察性医疗结果合作组织 CDM 真实世界数据的多中心队列研究中,没有发现使用 CA 与从 MCI 发展为全因痴呆或注意力缺失症之间存在关联。
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引用次数: 0
A Comparison of Item Characteristics and Test Information Between the K-MMSE~2:SV and K-MMSE. K-MMSE~2:SV 与 K-MMSE 的项目特征和测试信息比较。
Pub Date : 2024-07-01 Epub Date: 2024-07-25 DOI: 10.12779/dnd.2024.23.3.117
Jihyang Kim, Seungmin Jahng, SangYun Kim, Yeonwook Kang

Background and purpose: The Korean-Mini Mental State Examination, 2nd edition (K-MMSE~2) was recently released. This study aimed to determine whether the K-MMSE~2: Standard Version (K-MMSE~2:SV) had the same test characteristics as the K-MMSE.

Methods: A total of 1,514 healthy community-based participants aged 19 to 90 years were administered the K-MMSE~2:SV Blue Form along with the language items from the K-MMSE. The item and test characteristics and test information for the K-MMSE~2:SV and K-MMSE were compared using Item Response Theory analysis.

Results: Item discriminations for the K-MMSE~2:SV and K-MMSE were above the moderate range for all items except Recall. Most of the items on the K-MMSE~2:SV and K-MMSE had item category difficulty in the very easy or easy range. The test information curve (TIC) showed that the K-MMSE~2:SV and K-MMSE provide almost the same amount of information (27.86 vs. 28.44), with both tests providing the most information at an ability level of -1.57. The generalizability (G) coefficient for the K-MMSE~2:SV and K-MMSE was 0.99.

Conclusions: These results indicate that the K-MMSE~2:SV and K-MMSE are equally optimal tests for screening for mild cognitive impairment and early dementia. Given that the amount of test information provided by the two tests was almost identical, the shapes of the TICs were very similar, and the G coefficient was close to 1, we can conclude that the K-MMSE and K-MMSE~2:SV are equivalent tests.

背景和目的:最近发布了韩国-迷你精神状态测验(Korean-Mini Mental State Examination,2nd edition,K-MMSE~2)。本研究旨在确定 K-MMSE~2:标准版(K-MMSE~2:SV)是否具有与 K-MMSE 相同的测试特征:方法:对 1514 名年龄在 19 至 90 岁之间的健康社区参与者进行了 K-MMSE~2:SV 蓝色表格和 K-MMSE 语言项目的测试。通过项目反应理论分析,比较了K-MMSE~2:SV和K-MMSE的项目和测试特征以及测试信息:除回忆外,K-MMSE~2:SV 和 K-MMSE 所有项目的区分度都在中等以上。K-MMSE~2:SV 和 K-MMSE 的大多数项目的项目类别难度都在非常简单或简单的范围内。测验信息曲线(TIC)显示,K-MMSE~2:SV 和 K-MMSE 提供的信息量几乎相同(27.86 对 28.44),在能力水平为-1.57 时,两种测验提供的信息量最大。K-MMSE~2:SV 和 K-MMSE 的通用性(G)系数为 0.99:这些结果表明,K-MMSE~2:SV 和 K-MMSE 同样是筛查轻度认知障碍和早期痴呆症的最佳测试。鉴于两种测试所提供的测试信息量几乎相同,TIC 的形状也非常相似,而且 G 系数接近 1,我们可以得出结论,K-MMSE 和 K-MMSE~2:SV 是等效的测试。
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引用次数: 0
Assessing the Impact of Defacing Algorithms on Brain Volumetry Accuracy in MRI Analyses. 评估磁共振成像分析中的去污算法对脑容量测量准确性的影响
Pub Date : 2024-07-01 Epub Date: 2024-05-08 DOI: 10.12779/dnd.2024.23.3.127
Dong-Woo Ryu, ChungHwee Lee, Hyuk-Je Lee, Yong S Shim, Yun Jeong Hong, Jung Hee Cho, Seonggyu Kim, Jong-Min Lee, Dong Won Yang

Background and purpose: To ensure data privacy, the development of defacing processes, which anonymize brain images by obscuring facial features, is crucial. However, the impact of these defacing methods on brain imaging analysis poses significant concern. This study aimed to evaluate the reliability of three different defacing methods in automated brain volumetry.

Methods: Magnetic resonance imaging with three-dimensional T1 sequences was performed on ten patients diagnosed with subjective cognitive decline. Defacing was executed using mri_deface, BioImage Suite Web-based defacing, and Defacer. Brain volumes were measured employing the QBraVo program and FreeSurfer, assessing intraclass correlation coefficient (ICC) and the mean differences in brain volume measurements between the original and defaced images.

Results: The mean age of the patients was 71.10±6.17 years, with 4 (40.0%) being male. The total intracranial volume, total brain volume, and ventricle volume exhibited high ICCs across the three defacing methods and 2 volumetry analyses. All regional brain volumes showed high ICCs with all three defacing methods. Despite variations among some brain regions, no significant mean differences in regional brain volume were observed between the original and defaced images across all regions.

Conclusions: The three defacing algorithms evaluated did not significantly affect the results of image analysis for the entire brain or specific cerebral regions. These findings suggest that these algorithms can serve as robust methods for defacing in neuroimaging analysis, thereby supporting data anonymization without compromising the integrity of brain volume measurements.

背景和目的:为确保数据隐私,开发 "篡改程序 "至关重要。"篡改程序 "可通过模糊面部特征来匿名大脑图像。然而,这些篡改方法对大脑成像分析的影响令人十分担忧。本研究旨在评估三种不同去污方法在自动脑容积测量中的可靠性:方法:对 10 名被诊断为主观认知能力下降的患者进行了三维 T1 序列磁共振成像。使用 mri_deface、BioImage Suite 基于网络的deface 和 Defacer 进行了剔除。使用 QBraVo 程序和 FreeSurfer 测量脑容量,评估原始图像和去污图像之间的类内相关系数(ICC)和脑容量测量的平均差异:患者的平均年龄为(71.10±6.17)岁,其中男性 4 人,占 40.0%。颅内总容积、大脑总容积和脑室容积在三种去污方法和两种容积测量分析中均显示出较高的 ICC。所有区域的脑容量在三种去污方法中都显示出较高的 ICC。尽管某些脑区之间存在差异,但在所有区域中,原始图像和去污图像之间的区域脑容量均值差异并不明显:结论:评估的三种去污算法对整个大脑或特定脑区的图像分析结果没有明显影响。这些研究结果表明,这些算法可以作为神经成像分析中进行去污的稳健方法,从而支持数据匿名化,而不会损害脑容量测量的完整性。
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引用次数: 0
Shunt-Responsive Idiopathic Normal Pressure Hydrocephalus Patient With Parkinson's Disease-Compatible Findings on Dopamine Transporter Scans. 患有帕金森病的顺应症特发性正常压力脑积水患者--多巴胺转运体扫描结果与帕金森病相符。
Pub Date : 2024-07-01 Epub Date: 2024-06-28 DOI: 10.12779/dnd.2024.23.3.161
Chaejin Lee, Sang-Youl Yoon, Sang-Woo Lee, Shin Young Jeong, Eunhee Park, Jeong-Hyun Hwang, Ki-Su Park, Kyunghun Kang
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引用次数: 0
期刊
Dementia and neurocognitive disorders
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