Figure 1.

Multi-detector computed tomography mitral annulus measurement. (A and B) Multi-detector computed tomography image of the left heart, the best fit plane through green line corresponds with the plane of image C (double oblique view). (C) Axial thin section of the mitral annulus. The minimal and maximal diameter were 23.6 mm and 33.4 mm, respectively with an area of 632 mm² measured manually (D) multi-detector computed tomography-derived, three-dimensional virtual model of the left ventricle and aorta in mid-late diastolic phase. The annular calcium (orange) was used to trace mitral annulus in 3D (green). The minimal and maximal mitral annulus diameters were 22.4 mm and 32.6 mm respectively, with an annular area of 546 mm².