Pulmonary Embolism: Diagnostic Approach and Algorithm
Pulmonary Embolism: Diagnostic Approach and Algorithm
Pulmonary Embolism: Diagnostic Approach and Algorithm
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Preferred <strong>Diagnostic</strong> Modality Today: MDCT‐PA<br />
Contrast enhanced MDCT –PA is currently the<br />
preferred method of diagnosis<br />
Sensitivity (83%) <strong>and</strong> specificity (96%) of MDCT‐PA for<br />
the detection of PE (PIOPED II)<br />
Typical findings on CTPA include:<br />
‐ Complete arterial occlusion: Low attenuation on CT<br />
‐ Non obstructive intraluminal filling defects<br />
‐ Evidence of right heart strain<br />
‐ Polo mint sign <strong>and</strong> Rail track sign<br />
‐ Can see peripheral wedge shaped infarcts
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