US Echocardiography Transesophageal The literature does not support the use of US echocardiography transesophageal for the evaluation of suspected PE for patients with low to intermediate probability and negative D-dimer [8,12-16]. US Echocardiography Transthoracic Resting The literature does not support the use of US echocardiography transthoracic resting for the evaluation of suspected PE for patients with low to intermediate probability and negative D-dimer [8,12-16]. V/Q Scan Lung The literature does not support the use of V/Q scan lung for the evaluation of suspected PE for patients with low to intermediate probability and negative D-dimer [8,12-16]. CT Chest With IV Contrast There is no relevant literature to support the use of CT chest with IV contrast to assess PE in patients with low or intermediate probability with positive D-dimer. When IV contrast is given during the CT acquisition, the study should be performed as a CTPA. CT Chest Without and With IV Contrast There is no relevant literature to support the use of CT chest without and with IV contrast to assess PE in patients with low or intermediate probability with positive D-dimer. When IV contrast is given during the CT acquisition, the study should be performed as a CTPA. CT Chest Without IV Contrast There is no relevant literature to support the use of CT chest without IV contrast to assess PE in patients with low or intermediate probability with positive D-dimer. CTA Chest With IV Contrast with CTV Lower Extremities Older literature shows that the field of view for CTA can be extended to include the lower extremities so that both the pulmonary arteries and the deep veins of the leg can be imaged during the same imaging session [25,26]. However, this protocol is very rarely used at present, owing to the accuracy of performing US for DVT and the increased burden of contrast and radiation for the associated extended craniocaudal field of view [27].
Suspected Pulmonary Embolism PCAs. US Echocardiography Transesophageal The literature does not support the use of US echocardiography transesophageal for the evaluation of suspected PE for patients with low to intermediate probability and negative D-dimer [8,12-16]. US Echocardiography Transthoracic Resting The literature does not support the use of US echocardiography transthoracic resting for the evaluation of suspected PE for patients with low to intermediate probability and negative D-dimer [8,12-16]. V/Q Scan Lung The literature does not support the use of V/Q scan lung for the evaluation of suspected PE for patients with low to intermediate probability and negative D-dimer [8,12-16]. CT Chest With IV Contrast There is no relevant literature to support the use of CT chest with IV contrast to assess PE in patients with low or intermediate probability with positive D-dimer. When IV contrast is given during the CT acquisition, the study should be performed as a CTPA. CT Chest Without and With IV Contrast There is no relevant literature to support the use of CT chest without and with IV contrast to assess PE in patients with low or intermediate probability with positive D-dimer. When IV contrast is given during the CT acquisition, the study should be performed as a CTPA. CT Chest Without IV Contrast There is no relevant literature to support the use of CT chest without IV contrast to assess PE in patients with low or intermediate probability with positive D-dimer. CTA Chest With IV Contrast with CTV Lower Extremities Older literature shows that the field of view for CTA can be extended to include the lower extremities so that both the pulmonary arteries and the deep veins of the leg can be imaged during the same imaging session [25,26]. However, this protocol is very rarely used at present, owing to the accuracy of performing US for DVT and the increased burden of contrast and radiation for the associated extended craniocaudal field of view [27].