**5.8 Magnetic resonance imaging (MRI)**

MRI has 98% sensitivity and specificity in detection of thoracic aortic dissection.

MRI shows the site on intimal tear, type and extent of dissection, presence of aortic insufficiency, as well as surrounding mediastinal structures. It has the advantage of not using contrast material; thus, it is preferred in patients with renal impairment or allergic to iodine [22].

Limitations of MRI:

