Fig 1.
Formulas used for calculation of effective diameter.
eff. DA = effective diameter derived from aortic annulus area, eff. DP = effective diameter derived from aortic annulus perimeter.
Fig 2.
CT TAVI planning, Syngo.via™ VB10A Siemens, Siemens Healthcare GmbH, Forchheim Germany.
(A) The oblique transversal plane crossing the most basal attachments of the aortic valve leaflets. (B) The oblique sagittal (coronal) plane of the aortic valve showing leaflets.
Fig 3.
Automatic aortic annulus plane of prototype version of syngo.CT Cardiac Planning.
Syngo.via™ VB20A, Siemens Healthcare GmbH, Forchheim Germany.
Table 1.
Baseline characteristics.
Table 2.
Time tracking of manual and semi-automatic measurements.
Table 3.
Intraclass correlation agreement (ICC) between manual and semi-automatic approach and inter-observer agreement in semi-automatic approach.
Fig 4.
Bland-Altman plots demonstrating agreement between fully manual and semi-automatic MDCT measurements of annular dimensions commonly used in prosthesis size selection shown with 95% confidence interval.
The middle line presents the mean difference (expressed in mm for aortic annulus diameters and perimeter, mm2 for aortic annulus area) and the upper and lower lines represent 95% confidence interval. (A) Short Axis Diameter; (B) Aortic Annulus Area; (C) Effective Diameter (Area); (D) Aortic Annulus Perimeter; (E) Effective Diameter (Perimeter).
Fig 5.
Aortic annulus diameter measured manually and with semi-automatic software.
mm = millimeter.
Fig 6.
Theoretical TAVI prosthesis size selection (Edwards SapienValve).
n = number; TAVI = transcatheter aortic valve implantation. Theoretical prosthesis size selection according to recommendations for Edwards SapienValve (Edwards Lifesciences Corp, Irvine, USA).