Significance of Early Perfusion Weighted MRI for the Diagnosis of TIA

J Korean Neurol Assoc > Volume 28(2); 2010 > Article

Journal of the Korean Neurological Association 2010;28(2): 108-111.

일과성허혈발작에서 초기 관류강조영상의 유용성

김기주, 김의중 서진영 오선영 신병수

전북대학교 의과대학 신경과학교실, 임상의학연구소

Significance of Early Perfusion Weighted MRI for the Diagnosis of TIA

Ki-Joo Kim

Department of Neurology, Chonbuk National University Medical School and Research Institute of Clinical Medicine, Jeonju, Korea

Abstract

We report on three patients with transient focal neurologic deficits that completely resolved. In all cases, initial perfusion-weighted imaging (PWI) performed 1 hour after being free of symptoms showed a defect in the time-to-peak (TTP) map in the area with normal diffusion-weight imaging (DWI) findings. After 24 hours, DWI showed a high signal intensity in exactly the same area as the TTP defect. Therefore, early PWI provides a rapid evaluation of cerebral hemodynamics in transient ischemic attack. Key Words: Ischemic attack, transient, MRI, perfusion-weighted imaging