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摘要


腦部減像電腦斷層血管攝影可同時提供腦部解剖及功能訊息,在急診臨床應用(如中風病患),必需有線上影像位移修正重整、功能分析及整合自動化;藉助 AFNI (Analysis of Functional Neuroimage, Medical College of Wiscosin, WI, USA)、Viewit (University of Illinois, USA)及SPM (Statistical Parametric Mapping, Wellcome Department of Cognitive Neurology, UK),研發自裝式減像電腦斷層血管攝影分析系統,以評估本研究使用的三相電腦斷層血管攝影(包括注射顯影劑前部分、電腦斷層血管攝影部分及顯影後部分),藉工作站及個人電腦(Linux系統)線上之影像處理,每個切面的處理時間約需20秒。此線上處理顯示三相電腦斷層血管攝影在顱底的電腦斷層血管攝影及腦灌流之應用,同時該系統無需額外經費並可應用於標準的臨床磁振造影系統。

並列摘要


Subtracted CT angiogram of brain provides both anatomical and functional information of brain circulation. For emergent service of patient, e.g. stroke, integration and automation of the on-line image realignment for motion correction, and functional analyses were required for clinical application. By adapting Analysis of Functional Neuroimage (AFNI, National Institute of Health, USA), Viewit (University of Illinois, USA) and SPM (Statistical Parametric Mapping, Wellcome Department of Cognitive Neurology, UK), a custom-designed image processing demonstrated the evaluation of the motion displacement and functional analyses of tri-phase CTA studies, including pre-contrast phase, CTA phase and post-contrast phase. With the on-line imaging processing, processing time was about 20 seconds per slice using workstation illustrated the potential applications in CTA of skull base and cerebral perfusion using tri-phase CTA technique. Easy implementation of the processing configuration can be applied in the standard clinical environment without additional cost.

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