확산강조 자기공명영상에서 양측 해마에 작은 고신호 강도 병변을 보인 일과성 전기억상실증 1예

• 영문명: A Case of Transient Global Amnesia with Two Tiny High Signal Intensities at the Head of Both Hippocampi on Diffusion-Weighted Magnetic Resonance Imaging
• 발행기관: 대한신경정신의학회
• 저자명: 김희철 김경식 손철호
• 간행물 정보: 『신경정신의학』제46권 제5호, 523~527쪽, 전체 5쪽
• 주제분류: 의약학 > 정신과학
• 파일형태: PDF
• 발행일자: 2007.09.30

영문 초록

We report on a patient with transient global amnesia (TGA) showing increased tiny signal intensities at the head of both hippocampi on diffusion-weighted image (DWI) performed on the second day after the onset of symptoms. The T1-weighted image using 3-tesla magnetic resonance imaging (MRI) showed no signal changes, but the T2-weighted image showed slight signal changes at the same portion of both hippocampi. Single photon emission computed tomography (SPECT) performed on the 4th day after the onset of TGA showed no perfusion abnormalities. This patient experienced an extreme emotional stress before the onset of TGA, and the patient s TGA started by a simultaneous Valsava-like maneuver. We discuss the venous congestion/ ischemia hypothesis for TGA. This case confirms that DWI is a sensitive and useful tool for evaluating the early stage of TGA

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키워드

Transient global amnesia MRI scans Hippocampus Brain Ischemia