Pictorial essay: Susceptibility-weighted imaging in cerebral ischemia
نویسندگان
چکیده
منابع مشابه
New MR sequences in daily practice: susceptibility weighted imaging. A pictorial essay
BACKGROUND: Susceptibility-weighted imaging (SWI) is a relatively new magnetic resonance (MR) technique that exploits the magnetic susceptibility differences of various tissues, such as blood, iron and calcification, as a new source of contrast enhancement. This pictorial review is aimed at illustrating and discussing its main clinical applications. METHODS: SWI is based on high-resolution, th...
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Gradient-echo (GE) imaging is recognized as a means to detect hemorrhagic changes in cerebral amyloid angiopathy (CAA). However, almost 25% of patients with CAA do not show microhemorrhages on T2* GE imaging. We applied a new imaging method, susceptibility weighted imaging (SWI), to evaluate the presence of microhemorrhages. In a suspected case of CAA, where cognitive effects are also present, ...
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A 59-year-old man with a family history of cerebral cavernous malformations (CCM) presented with focal seizures. T2*-weighted gradient echo (GRE) images showed multiple lesions consistent with cavernous malformations (figure 1). Susceptibility-weighted images (SWI) detected nearly triple the number of lesions than were seen with the GRE sequence (figure 2). SWI is a relatively new MRI technique...
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ژورنال
عنوان ژورنال: Indian Journal of Radiology and Imaging
سال: 2010
ISSN: 0971-3026
DOI: 10.4103/0971-3026.73530