I had this test preformed on me last week suggested from at least 4 twitter Interventional radiologists (yes I seem to have minimal support with my treating MD ) venogram ( done by a catheter in the affected arm vein and contrast dye injected under x-ray ) this is the gold standard for VTOS dx. ***Results ***they say the test was fine. Do you recommend the MRAMRVMRI?? I have all the warnings but I have intermittent swelling arm activity, as well as intermittent cessation of flow on artery and (veins arm up) You can view my photos on ** Thank you