Fig. 3.

Assessment of coronary ostial height on MRI. Navigator-assisted 3-D SSFP stack of the aortic root in the late diastolic phase is acquired. Ostial height is measured from the aortic valve annular plane (a: left coronary artery, c right coronary artery). In the same patient corresponding CT images (b: left coronary artery, d right coronary artery). This MRI sequence can be also be used to assess sinus of valsalva height and width. Note the dark appearance of the anterior aortic wall and the left ventricle outflow tract due to extensive calcifications, easily seen on the corresponding CTA images