RESULTS: Three hundred and seventy-two patients were scanned during the study period of which 67 (18%) were found to have PE. Baseline demographic and clinical data was similar between groups (age, gender, race, BMI, presence of prior DVT, presence of fracture). There was no difference between those found to have PE and not with regard to presence of chest pain, lower extremity edema, hypotension (systolic blood pressure < 100mmHg), or hypoxia (SpO2 <90%). Alternative radiographic findings on CTPA were common in both the PE and non-PE group; more than 50% of patients in both groups had atelectasis and 40% vs. 31% had pleural effusion in the PE and non-PE group, respectively. There was no difference in the VTE prophylactic agents used between groups. Overall, there was no significant difference in survival between groups (100% survival in PE group vs. 98.3% survival in non-PE group).