Higher Lesion Detection by 3.0T MRI in Patient with Transient Global Amnesia.
10.3349/ymj.2009.50.2.211
- Author:
Seung Yeob LEE
1
;
Won Joo KIM
;
Sang Hyun SUH
;
Seung Hun OH
;
Kyung Yul LEE
Author Information
1. Department of Neurology, Yonsei University College of Medicine, Seoul, Korea. kylee@yuhs.ac
- Publication Type:Original Article
- Keywords:
Transient global amnesia;
ischemia;
MRI
- MeSH:
Adult;
Aged;
Aged, 80 and over;
Amnesia, Transient Global/*diagnosis/pathology;
Female;
Humans;
Magnetic Resonance Imaging;
Male;
Middle Aged;
Retrospective Studies;
Young Adult
- From:Yonsei Medical Journal
2009;50(2):211-214
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: Transient global amnesia (TGA) patients were retrospectively reviewed to determine the usefulness of high-field strength MRI in detecting probable ischemic lesions in TGA. MATERIALS AND METHODS: We investigated the lesion detection rate in patients with TGA using 1.5T and 3.0T MRI. Acute probable ischemic lesions were defined as regions of high-signal intensity in diffusion weighted image with corresponding low-signal intensity in apparent diffusion coefficient map. RESULTS: 3.0T MRI showed 11 out of 32 patients with probable ischemic lesions in the hippocampus with mean lesion size of 2.8 +/- 0.6 mm, whereas 1.5T MRI detected no lesion in any of 11 patients. There were no significant differences in clinical characteristics between the groups of 1.5 and 3.0T MRI. CONCLUSION: High-field strength MRI has a higher detection rate of probable ischemic lesions than low-field strength MRI in patients with TGA.
