Detection of hyperacute parenchymal hemorrhage of the brain using echo-planar T2*-weighted and diffusion-weighted MRI

被引：0

作者：

Martin Wiesmann

Thomas E. Mayer

Indra Yousry

Gerhard F. Hamann

H. Brückmann

机构：

[1] Department of Radiology,

[2] Medizinische Universität zu Lübeck,undefined

[3] 23538 Lübeck,undefined

[4] Germany,undefined

[5] Department of Neuroradiology,undefined

[6] Klinikum Grosshadern,undefined

[7] Ludwig-Maximilians-Universität,undefined

[8] 81377 München,undefined

[9] Germany Tel.: + 49-89-70 95 25 01 Fax: + 49–89–70952509,undefined

[10] Department of Neurology,undefined

[11] Klinikum Grosshadern,undefined

[12] Ludwig-Maximilians-Universität,undefined

[13] 81377 München,undefined

[14] Germany,undefined

来源：

European Radiology | 2001年 / 11卷

关键词：

Key words Intracerebral hemorrhage; Stroke; MR imaging; Echo-planar imaging; Diffusion-weighted imaging;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

We investigated the usefulness of echo-planar imaging (EPI) as well as T2*-weighted and diffusion-weighted MRI (DWI) to identify hyperacute hemorrhage (within 24 h after ictus) in the brain. Seven patients were examined 3.5 to 24 h after onset of symptoms using a whole-body 1.5-T MR system. Two diffusion-weighted sequences were run to obtain isotropic and anisotropic diffusion images. Apparent diffusion coefficients (ADC) were calculated from the isotropic diffusion images. All DWI images as well as the T2*-weighted EPI images showed the hematomas as either discrete, deeply hypointense homogeneous lesions, or as lesions of mixed signal intensity containing hypointense areas. We conclude that even in the early phase after hemorrhage, sufficient amounts of paramagnetic deoxyhemoglobin are present in intracerebral hemorrhages to cause hypointensity on EPI T2*-weighted and DWI images; thus, use of ultrafast EPI allows identification of intracerebral hemorrhage.

引用

页码：849 / 853

页数：4