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Alzheimer's Disease: Overview01:26

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Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...
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Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
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Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
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Imaging Studies I: CT and MRI01:14

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Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
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アルツハイマー病イメージングコンソーシアム

Deepti Putcha1, Michael J Properzi2, Kathryn V Papp3

  • 1Frontotemporal Disorders Unit, Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.

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PubMed
まとめ
この要約は機械生成です。

主観的な認知機能低下、特に視空間能力における低下は、前臨床アルツハイマー病(AD)を示唆する可能性がある。本研究では、認知機能正常者における自己申告による視空間困難が、アミロイドおよびタウバイオマーカーと相関することが判明し、非定型AD変異体の早期検出方法となる可能性が示唆された。

キーワード:
主観的認知機能低下視空間認知アルツハイマー病バイオマーカー早期検出

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Visualization of Amyloid β Deposits in the Human Brain with Matrix-assisted Laser Desorption/Ionization Imaging Mass Spectrometry
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Lesion Explorer: A Video-guided, Standardized Protocol for Accurate and Reliable MRI-derived Volumetrics in Alzheimer's Disease and Normal Elderly
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科学分野:

  • 神経科学; 老年医学; バイオマーカー

背景:

  • 認知機能正常者(CU)における主観的認知機能低下(SCD)は、アルツハイマー病(AD)進行のリスク因子である。; 現在のSCDに関する研究は、主に記憶の懸念に焦点を当てており、後部皮質萎縮症(PCA)のような他のAD表現型を無視している。; PCAのような非定型AD変異体を発症する可能性のある前臨床AD患者を特定する方法が必要とされている。

研究 の 目的:

  • 認知機能正常者(CU)における主観的な視空間低下と認知機能およびバイオマーカーとの関連を調査する。; 日常生活認知評価尺度(ECOG)の視空間サブスケールが早期AD病理を特定する上で有用性を探る。; 主観的な視空間の懸念が非定型AD変異体の発症を予測できるかどうかを判断する。

主な方法:

  • 253人の認知機能正常者(CU)からのECOG視空間サブスケールに関する自己報告回答の分析。; ECOG視空間スコア、客観的認知テスト、およびアミロイドPET陽性(PiB+)との関連の調査。; 主観的な視空間低下とタウ負荷との関連を調べるための、全皮質タウPET一般線形モデルの実施。

主要な成果:

  • 認知機能正常者(CU)の4%が視空間困難を報告したが、これは年齢、性別、教育、MMSEスコアとは関連がなかった。; ECOGの視空間スコアは、客観的な視空間認知またはMMSEと相関しなかった。; 視空間の懸念は、前臨床ADが関与する領域におけるアミロイド負荷(PiB+)および右半球タウ沈着の増加と関連していた。

結論:

  • 健康な老化ではまれな主観的な視空間低下は、CU個人のサブセットに存在する。; ECOG視空間サブスケールは、記憶の懸念に加えて視空間低下を含む早期AD病理の検出に役立つ可能性がある。; 主観的な視空間低下を持つ個人を特定することは、非定型AD変異体の早期診断と治療に役立つ可能性がある。