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Precise measurements of aortic annulus dimensions are crucial for prosthesis size selection in patients undergoing transcatheter aortic valve implantation (TAVI). The so-called effective diameter (derived from area) measured in multislice computed tomography (MSCT) images has evolved to be the most precise measurement tool. Usually, the operator must manually adjust the aortic annular plane. Syngo Aortic ValveGuide (Siemens Healthcare) is a new software tool that allows for automatic aortic root reconstruction and annular plane detection. The aim of this study was to compare the effective diameter measured in automatically detected and manually adjusted annular plane.

Manual versus automatic detection of aortic annulus plane in a computed tomography scan for transcatheter aortic valve implantation screening