Usefulness of Diffusion -Weighted Imaging in Acute and Subacute Ischemic Stroke : Comparison with Fast Spin-Echo T2-Weighted Imaging and Fluid Attenuated Inversion Recovery Imaging

J Korean Neurol Assoc > Volume 17(5); 1999 > Article

Journal of the Korean Neurological Association 1999;17(5): 615-620.

급성 및 아급성 허혈성 뇌졸중에서 확산강조영상의 유용성 :고속 스핀에코 T2 강조영상 및 유체감쇄반전회복 영상과의 비교

조은경, 정지향 ·채승희 ·김용재 ·박기덕 ·최경규 ·김유경*

이화여자대학교 의과대학 신경과학교실,방사선과학교실*

Usefulness of Diffusion -Weighted Imaging in Acute and Subacute Ischemic Stroke : Comparison with Fast Spin-Echo T2-Weighted Imaging and Fluid Attenuated Inversion Recovery Imaging

Eun Kyoung Cho, M.D., Jee Hyang Jung, M.D., Seung Hee Chae, M.D., Yong Jae Kim, M.D., Kee Duk Park, M.D., Kyoung Gyu Choi, M.D., Yoo kyung Kim, M.D.*

Department of Neurology and Department of Radiology*, College of Medicine, Ewha Womans University

Abstract

Background : Diffusion-weighted MR imaging (DWI) was designed to detect the random molecular otion of water in tissue. DWI has gained increasing interest recently because it can demonstrate yperacute stroke earlier than any other imaging methods so far. The purpose of our study was to etermine the clinical usefulness and significance of DWI compared with those of Fast Spin Echo T2-weighted image (SE T2WI) and Fluid Attenuated Inversion Recovery (FLAIR) image in acute and subacute ischemic stroke. Methods : Twenty-five adult patients with clinical diagnoses of acute or subacute cerebral infarctions were imaged with fast SE T2WI, FLAIR and DWI using a 1.5-T image. Results :All the patients had areas of high signal intensity indicating acute or subacute lesions on DWI and these lesions provide an excellent clinicoanatomic correlation. Conclusions : DWI is most useful in the diagnosis and localization of acute or subacute lacuna or subcortical infarction in patients with preexisting chronic infarctions or white matter hyperintensity showing high signal intensity similar to acute or subacute infarctions on T2WI or FLAIR image. J Kor Neurol Ass 17(5):615~620, 1999 Key Words : Magnetic resonance(MR), Diffusion study, Brain, Infarction, Multiple subcortical infarction