Perfusion MRI sequences may be useful, because recurrent BM are characterized by increased vascular perfusion, while radiation necrosis is characterized by decreased vascularity.

灌 MRI 序列可能有用，因为复发性 BM 的特点是管灌，而放射性坏死的特点是管分布减少。

Perhaps, for this reason, and in marked contrast to ST elevation MI the distribution of the ECG changes among the leads correlates poorly with the vessel obstructed.

许，由于这个原因，与ST段抬高心肌梗死相比，心电图改变在导联中的分布与管阻塞的关系不大。