Automatic Detection of the Aortic Annular Plane and Coronary Ostia from Multidetector Computed Tomography

Table 2

Comparison of the Euclidean distances between the predicted and ground truth target points (d₁) and the target points identified by the two observers (d₂).

Landmark	Model vs ground truth (d1) (mm)	Observer 1 vs observer 2 (d2) (mm)	Paired diff. (d1 − d2)	value
LCC	1.6 (1.2–2.3)	2.4 (1.4–3.4)	0.8 ± 1.3	<0.001
NCC	1.5 (0.9–2.1)	2.4 (1.4–3.2)	−0.9 ± 1.3	<0.001
RCC	1.6 (1.3–2.2)	2.4 (1.9–3.6)	−0.9 ± 1.4	<0.001
LCO	1.3 (0.9–1.9)	1.4 (1.0–2.2)	−0.1 ± 1.0	0.2
RCO	1.4 (0.9–2.0)	1.4 (1.0–1.8)	0.1 ± 1.0	0.4
All	1.5 (1.1–2.1)	2.0 (1.3–2.8)	−0.5 ± 1.3	<0.001

Paired difference (Paired diff.) is in mm.