Mattila K T, Komu M E, Koskinen S K, Niemi P T
Department of Diagnostic Radiology, Turku University Hospital, Finland.
Acta Radiol. 1993 Nov;34(6):559-62.
Magnetization transfer contrast (MTC) technique provides a new type of contrast in MR imaging. The MTC method is based on the interaction between the spins of free protons and those with restricted motion. Exercise-induced changes in signal intensity and MTC were measured in the forearm muscles of 10 volunteers at 0.1 T. There was 26% increase in signal intensity of active flexor muscles after exercise when imaged with ordinary gradient echo sequence. Despite this marked intensity increase, the postexercise values of MTC did not differ from the preexercise ones.
磁化传递对比（MTC）技术在磁共振成像中提供了一种新型对比。MTC方法基于自由质子自旋与运动受限的质子自旋之间的相互作用。在0.1T磁场下，对10名志愿者的前臂肌肉进行运动诱导的信号强度和MTC变化测量。当用普通梯度回波序列成像时，运动后主动屈肌的信号强度增加了26%。尽管强度有明显增加，但运动后MTC值与运动前无差异。
