A functional MR technique was used in which a bolus of gadoteridol contrast agent was injected rapidly during the collection of image data, resulting in contrast-induced signal loss in proportion to cerebral blood volume.

• 功能磁共振技术，即在成像收集数据的过程中快速注射一支造影剂，可测试脑血容量分配中对比感应信号的遗失。