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IMAGING DIAGNOSIS—MAGNETIC RESONANCE IMAGING PSEUDOLESION ASSOCIATED WITH THE PETROUS TEMPORAL BONE
Author(s) -
COOPER JOCELYN J.,
LEVINE JONATHAN M.,
YOUNG BENJAMIN D.,
HICKS DANIEL G.,
HOFFMAN ANTON,
BRATTON GERALD
Publication year - 2010
Publication title -
veterinary radiology and ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.541
H-Index - 60
eISSN - 1740-8261
pISSN - 1058-8183
DOI - 10.1111/j.1740-8261.2009.01618.x
Subject(s) - medicine , magnetic resonance imaging , temporal bone , cadaveric spasm , anatomy , hyperintensity , pathology , susceptibility weighted imaging , petrous bone , adipose tissue , substantia nigra , radiology , disease , parkinson's disease , endocrinology
Normal anatomic variation in the amount of fat within the petrous temporal bone of dogs can result in a magnetic resonance (MR) imaging pseudolesion. Focal hyperintense areas in the region of the hippocampus on T1‐weighted, T2‐weighted, and fluid‐attenuated inversion recovery imaging sequences were noted in a dog being imaged for seizure activity. Further investigation of this region, aided by the use of cadaveric specimens, led to the identification of normal anatomic variability in the amount of fat in the substantia spongiosa of the petrous temporal bone. The presence of normal adipose tissue was confirmed histopathologically. Fat suppression MR imaging sequences can be used to differentiate whether hyperintensity ventral to the hippocampus is a result of a pathologic process, or fat in the substantia spongiosa of the petrous temporal bone.