뇌경색 환자에서 뇌종양과 유사한 Tc-99m tetrofosmin의 섭취 (Cerebral Infarction Mimicking Brain Tumor on Tc-99m Tetrofosmin Brain SPECT imaging) |
Author |
김 순, 전석길1,원경숙1, |
Soon Kim, M.D., Seok Kil Zeon, M.D.,1 Kyoung Sook Won, M.D.1 |
Affiliation |
동국대학교 방사선과학 교실, 계명대학교 핵의학교실1 Department of Radiology, Dongguk University College of Medicine, Department of Nuclear Medicine, Keimyung University School of Medicine1, Daegu, Korea |
Abstract |
A 43-year-old man was presented with persistent headache for two weeks. T2 weighted MR imaging showed high
signal intensity with surrounding edema in the left frontal lobe. These findings were considered with intracranial
tumor such as glioma or metastasis. Tc-99m tetrofosmin SPECT showed focal radiotracer accumulation in the
left frontal lobe. The operative specimen contained cerebral infarction with organizing leptomeningeal hematoma
by pathologist. Another 73-year-old man was hospitalized for chronic headache. Initial CT showed ill-defined
hypodensity with mass effect in the right parietal lobe. Tc-99m tetrofosmin SPECT showed focal radiotracer
uptake in the right parietal lobe. These findings were considered with low-grade glioma or infarction. Follow-up
CT after 5 months showed slightly decreased in size of low density in the right parietal lobe, and cerebral
infarction is more likely than others. Tc-99m tetrofosmin has been proposed as a cardiotracer of myocardial
perfusion imaging and an oncotropic radiotracer. Tc-99m tetrofosmin SPECT image provides a better attractive
alternative agent than Tl-201 as a tumor-imaging agent, with characteristics such as high-energy flux, short
half-life, favorable biodistribution, dosimetry and lower background radioactivity. We have keep in mind on the
analysis of Tc-99m tetrofomin imaging when cerebral infarction is being differentiated from brain tumor. (Korean J
Nucl Med 38(3):268-271, 2004) |
Keyword |
Brain tumor, Cerebral infarction, Tc-99m tetrofosmin SPECT |
Full text Article |
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