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<section begin="radiology" /> | <section begin="radiology" /> | ||
=== Imaging === | === Imaging === | ||
[[Ultrasound]] is important in the evaluation of DVT | [[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. | If D-dimer and ultrasound are inconclusive, [[venography]] with [[CT]] or [[MRI]] may be used. |