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KMID : 0372919960170040443
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Journal of Biomedical Engineering Research
1996 Volume.17 No. 4 p.443 ~ p.448
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Quantification of Cerebral Perfusion Reserves using Deadtime Correction of Gamma Camera and Norma1ized Difference Ratio Image in Brain SPECT
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이재성
곽철은/박광석/이동수/정준기/이명철/고창순
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Abstract
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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.
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