Measurement of the aortic annulus using multidetector computed tomography

(A) Coronal plane view through the long axis of the LVOT. The longer dimension of the aortic annulus is depicted by the arrow.
(B) Sagittal plane view through the long axis of the LVOT. The shorter dimension of the annulus is depicted by the arrow.
(C) Transverse plane reconstructed using the double oblique technique of multiplanar reconstruction.