Table 3.

Summary of prediction errors under different gamma criteria.

	3%/3 mm		3%/2mm		2%/2mm
Metrics	TV, N (%)	CV, N (%)	TV, N (%)	CV, N (%)	TV, N (%)	CV, N (%)
Abs Err ≤3.5%	230 (90.2)	40 (83.3)	205 (80.4)	33 (68.8)	133 (52.2)	23 (47.9)
Abs Err ≤5%	239 (93.7)	45 (93.8)	233 (91.4)	36 (75.0)	174 (68.2)	29 (60.4)
Abs Err ≤10%	251 (98.4)	48 (100)	251 (98.4)	46 (95.8)	238 (93.3)	40 (83.3)
MAE (SD)	1.81% (2.12)	1.83% (1.82)	2.39% (2.41)	2.98% (2.91)	4.18% (3.76)	5.10% (4.71)

Abbreviations: TV = technical validation; CV = clinical validation; Abs Err = absolute prediction error; MAE = Mean absolute error; SD = standard deviation