This test uses magnets and radio waves to create images of the inside of the body.MRI can show aortic dissection and aneurysm, and it can be used on the lower back to detect dural ectasia.

• 这项检查利用电磁波来创建体内的图像，不但能够显示主动脉剥离和主动脉瘤的具体情况，还能够用于腰部检测硬脊膜扩张。