뇌혈류 SPECT에서 감마카메라 불응시간보정과 정규화 감산영상을 이용한 뇌혈류 비축능의 정량화 = Quantification of Cerebral Perfusion Reserves using Deadtime Correction of Gamma Camera and Norma1ized Difference Ratio Image in Brain SPECT

다국어 초록 (Multilingual Abstract)

Sequential brain SPECT imaging has been used to assess the cerebral perfusion reserve(CPR) in cerebrovascular diseases(UD). We have realized parametric images of CPR using deadtime correction of gamma camera and normalized difference ratio. For the anatomical localization of CPR, the parametric images were registered to the contours of the cerebral regions using optimal threshold method, which showed to reflect the CPR more reliably and distinctively than the simple subtraction. We conclude that the quantitative estimation of CPR using normalized difference ratio image could be useflll for the diagnosis and prognostic assessment of CVD.