Dynamics of the aortic annulus in 4D CT angiography for transcatheter aortic valve implantation patients.

ABSTRACT:

Background

Transcatheter aortic valve implantation (TAVI) is a well-established treatment for patients with severe aortic valve stenosis. This procedure requires pre-operative planning by assessment of aortic dimensions on CT Angiography (CTA). It is well-known that the aortic root dimensions vary over the heart cycle. However, sizing is commonly performed at either mid-systole or end-diastole only, which has resulted in an inadequate understanding of its full dynamic behavior.

Study goal

We studied the variation in annulus measurements during the cardiac cycle and determined if this variation is dependent on the amount of calcification at the annulus.

Methods

We measured and compared aortic root annular dimensions and calcium volume in CTA acquisitions at 10 cardiac

SUBMITTER: Elattar MA 

PROVIDER: S-EPMC5590871 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature