公开(公告)号：EP1784654A1

公开(公告)日：2007-05-16

申请号：EP05781079.8

申请日：2005-08-19

申请人： Philips Intellectual Property & Standards GmbH ,  Koninklijke Philips Electronics N.V.

发明人： Katscher, Ulrich ,  Dahnke, Hannes

IPC分类号： G01R33/50

CPC分类号： G01R33/50 ,  G01R33/58

摘要： The invention relates to an MR method of determining local relaxation time values (T1, T2) of an examination object (5). Firstly, two or more MR images (3, 4) of the examination object (5) are recorded, each with different time parameter sets (TR1, TE1, TR2, TE2) of an imaging sequence. MR images (6, 7) of a phantom are likewise recorded, wherein the same time parameter sets (TR1, TE1, TR2, TE2) of the imaging sequence are used and wherein the phantom has a known spatial distribution of relaxation time values (T1, T2). The local relaxation time values (T1, T2) of the examination object (5) are determined by comparing image values of the MR images (3, 4) of the examination object (5) with image values of the MR images (6, 7) of the phantom and by assigning image values of the MR images (6, 7) of the phantom to relaxation time values (T1, T2) according to the known spatial distribution of relaxation time values (T1, T2) of the phantom.