Disclosed is an MRI contrast agent which enables direct detection and imaging of exfoliated vascular endothelial sites. The MRI contrast agent comprises an imaging unit which contains an unpaired electron-carrying atom and/or molecule and is capable of amplifying or reducing MRI signals, and a detection unit which is bonded to said imaging unit and is capable of selectively recognizing exfoliated vascular endothelial sites and binding thereto. The detection unit is exemplified by one having a chemical structure expressed by the following formula (I), wherein at least one of R1-R11 is, for example, sulfonic acid group, and X is, for example, a phenyl group which may be substituted:
本发明公开了一种核磁共振成像造影剂,可对剥
脱的血管内皮部位进行直接检测和成像。该核磁共振成像造影剂包括一个成像单元,该成像单元包含一个未配对的载电子原子和/或分子,能够放大或减小核磁共振成像信号;以及一个检测单元,该检测单元与所述成像单元结合,能够选择性地识别
脱落的血管内皮部位并与之结合。检测单元的
化学结构如下式(I)所示,其中 R1-R11 中至少有一个是
磺酸基团,X 是可被取代的
苯基: