J Korean Radiol Soc.  2003 Jul;49(1):1-6. 10.3348/jkrs.2003.49.1.1.

Detection of Hemorrhagic Transformation in Patients with Acute Cerebral Infarction: Comparison of CT with T1WI, FLAIR, and Gradient-Echo MR Imaging

Affiliations
  • 1Department of Diagnostic Radiology, Chonnam National University Hospital, School of Medicine. jjseo@chonnam.ac.kr

Abstract

PURPOSE
To determine the diagnostic accuracy of T1-weighted, FLAIR, and GRE MR imagings in the detection of hemorrhagic transformation in patients with acute cerebral infarction and to compare it with CT. MATERAILS AND METHODS: Fifty-three patients with acute territorial cerebral infarction were studied prospectively. All patients underwent nonenhanced CT and MRI including the T1-weighted, FLAIR, and GRE. Lesion conspicuity of hemorrhage was scored as follows: 0-none; 1-suspicious; 2-sure. CT and MR imagings were reviewed two radiologists respectively. The mean value of the lesion conspicuity in each CT and MR sequences was compared by means of a Wilcoxon signed ranks test. The time intervals between CT and MR imagings ranged from 3 to 14 hours (mean; 7.6 hours).
RESULTS
Hemorrhagic transformation was detected on nonenhanced CT in 26 of 53 patients. In the detection of hemorrhage in patients with acute cerebral infarction, T1-weighted and FLAIR MR imagings were inferior to NECT (p<0.05). By contrast, lesion conspicuity of GRE MR imaging was not different from that of CT (p=0.5). In addition, lesion conspicuity of GRE MR imaging was greater than that of CT in five patients on reader A and two patients on reader B.
CONCLUSION
GRE MR imaging was superior to T1-weighted and FLAIR MR imagings, equal to nonenhanced CT in the detection of hemorrhagic transformation in patients with acute cerebral infarction.

Keyword

Brain, infarction; Hemorrhage, CT; Hemorrhage, MR

MeSH Terms

Cerebral Infarction*
Hemorrhage
Humans
Magnetic Resonance Imaging*
Prospective Studies
Full Text Links
  • JKRS
Actions
Cited
CITED
export Copy
Close
Share
  • Twitter
  • Facebook
Similar articles
Copyright © 2024 by Korean Association of Medical Journal Editors. All rights reserved.     E-mail: koreamed@kamje.or.kr