Published in:
01-09-2012 | Correspondence
Susceptibility-Weighted Imaging
A New Tool for Detection of Intratumoral Bleeding and Subarachnoid Hemorrhage—Report of Two Cases
Authors:
S. S. Baldawa, MS, MCh, K. Bele, MD, DM, G. Menon, MCh, DNB, C. V. George, MCh, M. Abraham, MCh, S. Nair, MBBS, MCh
Published in:
Clinical Neuroradiology
|
Issue 3/2012
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Excerpt
Intracranial hemorrhage may occur in primary or secondary brain tumors and may be the sole presenting feature of an intracranial tumor. It may also be evident only on computed tomography (CT) and/or magnetic resonance (MR) imaging in patients with diagnosed intracranial tumors. It may manifest as spontaneous intraparenchymal bleeding or subarachnoid hemorrhage (SAH; [
1,
2]). Both benign and malignant vascular tumors can present with intracranial bleeding [
3,
4]. Susceptibility-weighted imaging (SWI) is a new MR imaging sequence and is a fully flow-compensated 3D gradient-echo sequence (GRE) which uses magnitude and filtered phase sequences. It is extremely sensitive for the detection of paramagnetic substances and venous blood vessels. It has been shown to be far superior to conventional T2-weighted (T2-W) or GRE T2 sequences in detecting SAH [
5]. In this article two cases of intratumoral bleeding and SAH are reported, one arising from an extra-axial tumor clinoidal meningioma which was detected incidentally on SWI MR sequence and another arising from an intra-axial tumor ganglioglioma which had an acute presentation of intratumoral bleeding and SAH. …
