Doppler determination

The following are images taken from an MR venogram of a patient with prior DVT and PE with an IVC filter in place who presented with abrupt onset of low back and bilateral leg discomfort.

Coronal view of MR venogram

Coronal view of MR venogram

Transverse view of MR venogram

Transverse view of MR venogram

Given the findings in the images above, which of the following Doppler profiles would be expected to be seen on an duplex venous ultrasound performed on this patient?




What is the abnormality seen on these images and which blood vessel is involved?


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