Lisette van Dam

Chapter 5 88 TSE SPAIR sequences were negative for DVT according to both reviewers. In both patients, therapeutic anticoagulant treatment was started based on the results of CT venography. MR-NCTI was normal in all 30 patients in whom UEDVT was ruled out ( Table 4 ). Hence, the sensitivity of MR-NCTI for the diagnosis of UEDVT was 93% (95%CI 78- 99%) and the specificity was 100% (95%CI 88-100%). Figure 3 shows MR images diagnostic for UEDVT. Table 4 . Comparison of MR-NCTI results in patients with UEDVT and without UEDVT UEDVT No UEDVT MR-NCTI Abnormal 28 0 Normal 2 30 CDR, clinical decision rule; MR-NCTI, magnetic resonance noncontrast thrombus imaging; UEDVT, upper extremity deep vein thrombosis; US, ultrasonography. Figure 3. Magnetic resonance imaging of the right upper extremity in coronal view of a patient diagnosed with acute deep vein thrombosis in right brachial and axillar vein; A. Magnetic Resonance Direct Thrombus Imaging (MRDTI) and B. Three Dimensional Turbo Spin-echo Spectral Attenuated Inversion Recovery (3D TSE-SPAIR) showing high signal intensity in brachial and axillar vein (arrows) compatible with an acute thrombus.