Cerebral Infarction Mimicking Brain Tumor on Tc-99m Tetrofosmin Brain SPECT imaging

뇌경색 환자에서 뇌종양과 유사한 Tc-99m tetrofosmin의 섭취

  • Kim, Soon (Department of Radiology, Dongguk University College of Medicine) ;
  • Zeon, Seok-Kil (Department of Nuclear Medicine, Keimyung University School of Medicine) ;
  • Won, Kyoung-Sook (Department of Nuclear Medicine, Keimyung University School of Medicine)
  • 김순 (동국대학교 방사선과학 교실) ;
  • 전석길 (계명대학교 핵의학교실) ;
  • 원경숙 (계명대학교 핵의학교실)
  • Published : 2004.06.30

Abstract

A 43-year-old man was presented with persistent headache for two weeks. 72 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 T1-201 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.

Keywords

References

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