Clinical Impact of Findings Supporting an Alternative Diagnosis on CT Pulmonary Angiography in Patients With Suspected Pulmonary Embolism

In patients undergoing CTPA for suspected PE, findings supporting an alternative diagnosis were found in almost one-half of the patients. However, in only a few patients, the alternative diagnosis had therapeutic consequences. Hence, CTPA should principally be used to confirm or exclude PE in high-probability cases but not to establish an alternative diagnosis.