ISSN:
1432-1920
Keywords:
Magnetic resonance imaging
;
Pulse sequences
;
3D
;
Intracranial tumours
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract Oar purpose was to determine the value of a T1-weighted rapid three-dimensional gradientecho technique in preoperative MRI of brain tumours. We examined 30 patients with intracranial tumours who underwent neurosurgery, using T1-wighted magnetisation-prepared rapid gradient-echo (MP-RAGE) and axial T1-weighted spin-echo (SE) sequences, both before and after contrast medium (Gd-DTPA). Signal and contrast behaviour of anatomical and pathological structures were assessed with regions-of-interest (ROI) and visual inspection. Imaging results were compared with operative results. In 5 cases tumours and anatomical structure were segmented in MP-RAGE data sets. The MP-RAGE sequence considerably improved delineation of grey and white matter and small anatomical structures (vessels, cranial nerves), and significantly reduced flow artefacts. Contrast behaviour of tumours was similar with both techniques. Correlation of imaging with the operative results confirmed the reliability of the MP-RAGE sequence. Segmentation of MP-RAGE data sets allows three-dimensional display, which enables one to document the relevant information on a few images in selected cases.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00596528
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