<< The Emergency Medicine Approach To The Evaluation And Treatment Of Pulmonary Embolism

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Important considerations when comparing CTPA to V/Q scanning include their sensitivity and specificity and the differences in radiation exposure. The increased use of CT in patients with suspected PE has resulted in an increase in the diagnosis of PE but without an associated mortality benefit.93,94 It is possible that the falling threshold to rule out PE using CTPA has resulted in overdiagnosis.

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