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    • 2. 发明申请
    • METHOD OF MR IMAGING
    • 灌注磁共振成像输入和组织残留功能的BLIND确定
    • WO2005106517A2
    • 2005-11-10
    • PCT/GB2005/001680
    • 2005-05-04
    • UNIVERSITY OF BERGENCOCKBAIN, JulianTAXT, TorfinnGRÜNER, Renate
    • TAXT, TorfinnGRÜNER, Renate
    • G01R33/28
    • G01R33/5601
    • The invention provides, in a method of perfusion magnetic resonance imaging of a region of interest in a vascularized animal subject, said method comprising administering a contrast agent bolus into the vascular system of said subject; determining the magnetic resonance signal strength s i (t) for voxels (i) of said region of interest at a series of time values (t) over period from before contrast agent arrival in said region of interest to at least the end of the first pass of said contrast agent through said region of interest; from the determined values s i (t) for said signal strength and an arterial input function v(t), determining values for the tissue residue function r i (t) for each said voxel; and optionally generating an image of said region of interest from the determined values of r i (t); the improvement comprising generating from s i (t) a voxel specific arterial function v i (t) and using said voxel specific arterial function to determine the values of the tissue residue function r i (t).
    • 本发明在血管化动物受试者的感兴趣区域的灌注磁共振成像方法中提供,所述方法包括将造影剂推注施用于所述受试者的血管系统; 确定在造影剂到达所述感兴趣区域之前的时段内的一系列时间值(t)的所述感兴趣区域的体素(i)的磁共振信号强度si(t)至少到第一遍的结束 的所述造影剂通过所述感兴趣区域; 根据所述信号强度的确定值si(t)和动脉输入函数v(t),确定每个所述体素的组织残差函数ri(t)的值; 以及可选地从所确定的ri(t)的值生成所述感兴趣区域的图像; 改进包括从si(t)生成体素特异性动脉功能vi(t)并使用所述体素特异性动脉功能来确定组织残留功能ri(t)的值。