Fig. 3.

Efficacy E as a function of pitch for both generations of DSCT scanner. Values labeled with “ECG” correspond with a pitch of 3.4 and 3.2 for the second- and third-generation scanner, respectively. For the second-generation scanner, efficacy can be as low as 10%. For the third-generation scanner, efficacy lies above 50% for all pitch values. The error bars illustrate the uncertainty in E as estimated by propagation of the uncertainties in the underlying variables