Flowchart of study patients. *From August 2015 onward, patients with suspected acute recurrent ipsilateral DVT on anticoagulant treatment were enrolled in the study, because they were found to represent a high proportion (30%) of the screened study population. ^§The patient with a venous iliac stent in whom the stent could not be visualized and the patient in whom MRDTI could not be performed because of extreme pain were both receiving anticoagulant treatment at inclusion. Hence, a total of 68 patients were on anticoagulant treatment at inclusion, including 12 patients with a MRDTI scan positive for DVT, 1 patient with inconclusive MRDTI scan, 1 patient in whom MRDTI could not be performed, 53 patients with MRDTI negative for DVT, and 1 patient with MRDTI negative for DVT but diagnostic for superficial thrombophlebitis.