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Regions of interest (ROI) are used for obtaining washout curves of the blood circulatory system from RI angiocardiography.<BR>This paper describes an automatic ROI setting method.<BR>Assuming the central circulation as the four-compartment system, which is composed of an injection part of the right heart, the right heart, lungs and the left heart, assignment of pixels to the four compartments is made using the histogram of peak times which are detected from each pixel's time activity curve, and the labelling technique of the regions.<BR>The left ventricle area is also detected from the left heart compartment's region by applying the spectral analysis, of the time activity curves.<BR>A few examples are shown to clarify the practical applicability.
- 一般社団法人 日本生体医工学会の論文
一般社団法人 日本生体医工学会 | 論文
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