Optimal C-arm angulation during transcatheter aortic valve replacement: Accuracy of a rotational C-arm computed tomography based three dimensional heart model

Table 1 Operator variability and model-operator agreement of rotational C-arm computed tomography-based view planning data

n = 57	Average AD (ND)	Average AD (MC)
Operator 1 vs operator 2	7.05°± 3.06°	12.96°
RCT model vs both operators	6.84°± 3.78°	13.82°
RCT model vs operator 1	7.14°± 4.12°	14.37°

To measure the error between two sample C-arm views the angular deviations (AD) are computed and evaluated assuming normal distribution (ND) of the samples and using Monte Carlo (MC) methods. RCT: Rotational C-arm computed tomography.