Heart atlas for retrospective cardiac dosimetry: a multi-institutional study on interobserver contouring variations and their dosimetric impact

Table 1 Volume for each heart atlas structure averaged over patients and observers

Structure	M volume [mm³]	CV volume [%]	ICC volume	DCOM [mm]	ASD [mm]	HD [mm]	JSC	DSC
Heart	693.2	5.24 (4.52–6.20)	0.83 (0.62–0.93)	2.27	2.01	12.7	0.89	0.94
Aortic valve	13.6	21.3 (18.9–25.0)	0.53 (0.32–0.76)	7.96	4.16	10.8	0.44	0.57
Pulmonary valve	8.34	69.5 (58.1–84.7)	0.50 (0.27–0.74)	9.47	5.65	12.7	0.28	0.40
Myocardium	344.1	5.74 (4.96–6.75)	0.75 (0.55–0.89)	3.25	2.28	13.3	0.64	0.78
Left anterior myocardium	67.6	9.78 (8.41–11.5)	0.75 (0.58–0.88)	5.28	2.27	13.0	0.63	0.76
Right anterior myocardium	57.9	11.5 (9.87–13.5)	0.59 (0.38–0.79)	5.03	2.75	16.1	0.58	0.72
Deep structures	115.7	13.9 (12.0–16.4)	0.70 (0.44–0.87)	3.03	2.15	11.0	0.78	0.88

Spatial contouring agreement measures for each heart atlas structure. CV: coefficient of variation (with 95% credible interval). ICC: Intraclass correlation coefficient (with 95% credible interval). DCOM: Distance of center of mass. ASD: Average surface distance. HD: Hausdorff distance. JSC: Jaccard similarity coefficient. DSC: Dice similarity coefficient

ISSN: 1748-717X