Four-Year Cumulative Radiation Exposure in Patients Undergoing Computed Tomography Angiography for Suspected Pulmonary Embolism

Table 2

CT scans performed over the 4-year period including the initial CTA for PE evaluation.

Body region	Number of scans
Head	164
Head and neck	4
Neck	22
Neck and chest	2
Chest	468
Chest and abdomen	8
Abdomen	34
Pelvis	5
Abdomen and pelvis	175
Chest, abdomen, and pelvis	18
Total	900