Magnetic resonance imaging of arachnoid cysts.

Abstract:

:A retrospective review of magnetic resonance imaging (MRI)-computed tomography (CT) correlation was performed in 29 patients with arachnoid cysts. Short TR, short TE spin echo (SE) pulse sequences provided the best anatomic definition whereas multiple echo long TR, TE sequences allowed comparison of the signal intensity of the cyst with that of cerebrospinal fluid (CSF). Simple arachnoid cysts were isointense while neoplastic, hemorrhagic or inflammatory cysts were hyperintense relative to CSF. The CT differential diagnosis of an arachnoid cyst (depending upon its location) may include other cystic collections such as craniopharyngioma, epidermoid, astrocytoma, and chronic subdural hematoma. However, on MRI the combination of extra-axial location, morphological features, and signal intensity matching that of CSF allows one to make the diagnosis of an uncomplicated arachnoid cyst with confidence.

journal_name

Clin Imaging

journal_title

Clinical imaging

authors

Heier LA,Zimmerman RD,Amster JL,Gandy SE,Deck MD

doi

10.1016/0899-7071(89)90061-2

subject

Has Abstract

pub_date

1989-12-01 00:00:00

pages

281-91

issue

4

eissn

0899-7071

issn

1873-4499

pii

0899-7071(89)90061-2

journal_volume

13

pub_type

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