Case study of Tc-99m HMPAO brain SPECT imaging in a patient with hepatic encephalopathy and carotid artery stenosis.
A patient with hepatic encephalopathy is described. An initial SPECT using Tc-99m HMPAO was performed to evaluate relative brain perfusion. The initial brain SPECT images revealed decreased perfusion in the left frontal temporal lobe region. A subsequent carotid Doppler study revealed left-sided carotid artery stenosis. After appropriate medical treatment for elevated NH3 levels and reversal of the patient's symptoms, repeat SPECT brain images showed a normal pattern of activity. The possible causes and significance for these image findings are discussed.
Blend
Michael J
MJ
Department of Radiology, College of Medicine at the University of Illinois in Chicago, Chicago, IL 60612, USA. MJBlend@uic.edu
Rohany
Mehdi
M
Jones-Martinez
Nicole
N
De Leon
Ovidio A
OA
D000328:Adult; D001921:Brain / Q000000981:diagnostic imaging*; D016893:Carotid Stenosis / Q000150:complications* / Q000000981:diagnostic imaging*; D005260:Female; D006501:Hepatic Encephalopathy / Q000150:complications* / Q000000981:diagnostic imaging*; D006801:Humans; D019690:Technetium Tc 99m Exametazime; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods*
D019690:Technetium Tc 99m Exametazime