ISSN:
1437-2320
Keywords:
Key words Cerebellopontine angle
;
Constructive interference in steady-state imaging
;
Diffusion-weighted imaging
;
Epidermoid tumor
;
Magnetic resonance imaging
;
Surgical treatment
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract We describe the usefulness of three-dimen-sional Fourier transformation-constructive interference in steady-state (CISS) imaging and diffusion-weighted imaging (DWI) in the pre- and postoperative magnetic resonance imaging evaluation of intracranial epidermoid tumors. Two surgically proven epidermoid tumors in the cerebellopontine (CP) angle were not identified in conventional T1- and T2-weighted images because of a signal intensity similar to that of cerebrospinal fluid (CSF). CISS images clearly demonstrated displacement of the cranial nerves and a shift caused by a lesion in the cistern, but the signal intensity of the tumor by CISS was not sufficiently different from that of CSF to demonstrate the tumor directly. Using DWI, the tumor in the cistern was shown clearly by its increased signal intensity. Together, CISS and DWI compensated for each other's disadvantages, and this combination was useful in guiding surgical treatment of epidermoid tumors in the CP cistern.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s101430050055
Permalink
