Adjacent to the parenchymal hematoma is often the clue to the etiologic diagnosis: a large signal void, and/or several smaller ones nearby, reflect flow in portions of an AVM.

• 血肿实质周围部分的影像是病因学诊断的重要线索：一个的大的信号透空区周围散在若干小的信号透空区，这是AVM部分血流的影像。