CT angiogram is a new modality for the diagnosis of PE. To compare the diagnostic yield of CT angiogram with V/Q scan we retrospectively reviewed the results of both studies in patients admitted with the diagnosis of possible PE.
We reviewed the medical records of 30 patients (13 females, 17 males, age range:32-68 years; mean age:48 years) admitted with the clinical diagnosis of PE in whom both a CT angiogram and a V/Q scan had been performed.
Seventeen of 30 (57%) patients showed V/Q scans diagnostic of PE. Only 11 of these 17 patients showed a CT angiogram diagnostic of PE, whereas 6 patients showed a negative CT angiogram (P=0.008).
CT angiography failed to detect PE in a significant number of patients with diagnostic V/Q scans.
CT angiography is not yet ready to replace V/Q scan for the diagnosis of PE in community hospitals.
A. Al-Shrouf, None.