Coronary computed tomography angiography in coronary artery disease

Figure 2 Box plot shows the mean effective dose associated with different dose-reduction techniques. Coronary computed tomography angiography with the use of high pitch and prospective electrocardiography-triggering leads to the lowest radiation dose. The boxes indicate the first to third quartiles, and each midline indicates the median (second quartile) and the whiskers represent the maximum and minimum values of effective dose.