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SEQUENTIAL MAGNETIC RESONANCE IMAGING OF AN INTRACRANIAL HEMATOMA IN A DOG
Author(s) -
TAMURA SHINJI,
TAMURA YUMIKO,
TSUKA TAKESHI,
UCHIDA KAZUYUKI
Publication year - 2006
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.1740-8261.2006.00120.x
Subject(s) - medicine , magnetic resonance imaging , hematoma , mass effect , radiology , lesion , coma (optics) , cerebellar hemisphere , ventricle , mass/lesion , nuclear medicine , surgery , physics , optics
An 8‐year‐old Yorkshire terrier developed acute onset coma and seizure after cranial trauma. Intracranial hemorrhage was suspected from the clinical signs and history. Low‐field magnetic resonance (MR) imaging revealed a round mass within the right cerebral hemisphere, compressing the right lateral ventricle and displacing the longitudinal fissure to the left. The lesion was hypointense on T1‐weighted images and hyperintense on T2‐weighted images, consistent with an acute hemorrhage. MR imaging was performed every 24 h for 6 days from 1 h after the injury, and then on day 14 of hospitalization. With time, the signal intensity changed to hyperintense on T1‐weighted images. On T2‐weighted images the center of the mass changed to hypointense, and then to hyperintense with a hypointense rim. These changes of signal intensity were related to hemoglobin oxidation.