INTRACRANIAL MAGNETIC RESONANCE IMAGING ARTIFACTS AND PSEUDOLESIONS IN DOGS AND CATS |
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| Authors: | JOCELYN J. COOPER BENJAMIN D. YOUNG ANTON HOFFMAN GERALD BRATTON DANIEL G. HICKS AMY TIDWELL JONATHAN M. LEVINE |
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| Affiliation: | 1. Department of Small Animal Clinical Sciences, Texas A&M University, College Station, TX 77843;2. Department of Large Animal Clinical Sciences, Texas A&M University, College Station, TX 77843;3. Department of Veterinary Integrated Biosciences, and College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843;4. Veterinary Imaging Consultant, Uxbridge, MA 01569 |
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| Abstract: | Normal anatomic variation, study design, external factors, and tissue characteristics can all influence the manifestation of structures on magnetic resonance images (MRI). For the purpose of this review, imaging artifacts are considered to be nonpathologic abnormalities resulting from study design, intrinsic tissue characteristics, or external factors, while MRI pseudolesions are due to normal anatomic variation. Awareness of imaging artifacts and pseudolesions, as well as normal anatomic structures, is important when determining pathologic vs. normal or clinically insignificant abnormalities. The purpose of this report is to examine the literature to compile a review of selected artifacts and pseudolesions that are commonly encountered when imaging the canine and feline brain. |
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| Keywords: | CSF signal void FLAIR petrous temporal bone pituitary lobe hyperintensity susceptibility artifact trigeminal nerve |
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