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Table 5 CT scan-based prediction model of aortic prosthesis size

From: Aortic prosthetic size predictor in aortic valve replacement

Calculated diameter

All patients

Mechanical valve group

Tissue valve group

Mean diameter

12.89 + 0.335 × d

(R2 = 0.6241)

11.104 + 0.378 × d

(R2 = 0.6241)

13.068 + 0.341 × d

(R2 = 0.6241)

Perimeter-derived diameter

13.275 + 0.315 × d

(R2 = 0.5776)

11.213 + 0.371 × d

(R2 = 0.5929)

13.724 + 0.308 × d

(R2 = 0.5776)

Area-derived diameter

13.626 + 0.309 × d

(R2 = 0.5625)

11.593 + 0.363 × d

(R2 = 0.5329)

13.910 + 0.310 × d

(R2 = 0.5776)

  1. CT computed tomography, d corresponding calculated diameter, R2 R-squared, coefficient of determination of the model