Following up patients after coil embolization with non-invasive imaging such as CT or MRI is important to evaluate recanalization, surrounding and distal organ ischemia and complications, but can be difficult due to metal artifact or other factors. In this article, the characteristics of X-ray, CT and MRI to assess post-embolization state were addressed. The recent trend including dual energy CT, metal artifact reduction algorithm on CT, and sequences for MR angiography were summarized with some clinical cases.
