Inter-Observer Reliability of Fused Time-of-Flight MR Angiography and 3D Steady State Sequence versus 3D Contrast Enhanced Images in Evaluation of Neurovascular Compression

Purpose: Is to evaluate the accuracy of fused 3D time-of-flight (TOF) MR angiography and Steady-State sequence (FIESTA) versus contrast-enhanced T1 weighted images in evaluation neurovascular compression via an inter-observer agreement protocol. Methods: Patients presented with trigeminal neuralgia, tinnitus, or facial hemispasm were examined using 3D-TOF-MRA, 3D-FIESTA, T1WI cerebellopontine angle assess compression. Two independent readers assessed location, signal alteration, offending vascular structure, grade 3D-TOF-MRA 3D-FIESTA images. The Kappa test for interobserver was done. Results: final study cohort consisted 56 patients (42 females 14 males) a mean age 38.25 ± 1.94. AICA vessel 32 (57.1%) patients. most common nerve 26 patients, followed by facial/vestibulocochlear complex 18 solely 8th 12 All three grades encountered this percentages 48.2% (27/56), 30.3% (17/56), 21.4% (12/56) I, II, III respectively. Fused TOF steady-state images, showed perfect detection side compression, relation between loop, offended neural segment, vessel, while showing good regarding degree Conclusion: provide sufficient data diagnose microvascular syndromes comparable