Deep vein thrombosis: Difference between revisions

Deep vein thrombosis (view source)

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 <section begin="radiology" />
 === Imaging ===
-[[Ultrasound]] is important in the evaluation of DVT. It may show the thrombus as a hyperechoic mass in the venous lumen. When applying pressure to the vein with the ultrasound probe, an obstructed vein will not be compressible. Doppler imaging may show absent blood flow. If these findings are present, the diagnosis of DVT is made.
+[[Ultrasound]] is important in the evaluation of DVT, and is the first choice. When applying pressure to the vein with the ultrasound probe and the vein is not completely compressible, a thrombus is lodged in the vein. Examining in this manner is called compression Doppler ultrasound. Ultrasound may also rarely show the thrombus as a hyperechoic mass in the venous lumen. Doppler imaging may show absent blood flow. If any of these findings are present, the diagnosis of DVT is made.
 If D-dimer and ultrasound are inconclusive, [[venography]] with [[CT]] or [[MRI]] may be used.