PROBLEM TO BE SOLVED: To provide a blood flow analyzer which can provide an indication which quantitatively expresses the hemodynamics without measuring the artery TIC of a subject.SOLUTION: The blood flow analyzer 10 analyzes a time intensity curve (TIC) for each of the pixels or the regions of interest of the image of a time series which is collected by time coursely imaging a desired section of a subject by a medical modality 11 by giving labeled substance to the blood of the subject P. The blood flow analyzer 10 includes means (22) for calculating a parameter which expresses hemodynamics peculiar to tissue only based on the time intensity curve (TIC:Ci (t)) of the measured tissue of the subject P, as a blood flow volume (FLOWratio) based on the ratio of the maximum rising gradient (US) of the time intensity curve (TIC:Ci (t)) of the tissue to the maximum rising gradient (USref) of a reference portion, and also includes means (22, 26) for visually presenting calculation results by the calculation means.COPYRIGHT: (C)2010,JPO&INPIT【課題】被検体の動脈TICを測定せずに、その血流動態を定量的に表す指標を提供することができる血流解析装置を提供する。【解決手段】被検体Pの血液中に標識物質を与えて当該被検体の所望部位を医用モダリティ11により経時的に撮像して収集した時系列の画像のピクセル毎または関心領域毎の時間濃度曲線(Time Intensity Curve: TIC)を解析する血流解析装置10が提供される。血流解析装置10は、被検体Pの測定された組織の時間濃度曲線(TIC:Ci(t))のみに基づいて組織固有の血流動態を表すパラメータを、前記組織の時間濃度曲線(TIC:Ci(t))の立ち上がり最大傾斜(US)と、基準部分の立ち上がり最大傾斜(USref)との比に基づく血流量(FLOWratio)として算出する手段(22)と、前記算出手段による算出結果を視覚的に提示する手段(22,26)とを備える。【選択図】 図1
