29th Annual Student Research Conference
MRI Artifact Reduction Using MAVRIC Technique
Milite M. Abraha
Dr. Vayujeet Gokhale, Faculty Mentor
One method of reducing metal induced MRI artifact is Multi-Acquisition Variable-Resonance Image Combination (MAVRIC), which uses frequency selective excitation to correct arbitrary range of resonance frequency offsets near metallic devices. In this study, we have focused on how significantly MAVRIC reduces metallic artifact in the spine as compared to the conventional techniques. We gathered data set from 12 patients each comprising CT scan, regular and MAVRIC based MR images. Then, we defined three criteria to compare artifacts in our data set. First, we quantified three regions of interest (implant, foramen and nerve roots) in the MR images and compared it to the CT scan. The mean absolute error of the MR image decreased five-fold in the MAVRIC technique. Likewise, the size of the foramen and the nerve root was larger in the MAVRIC system and a wider region of the nerve root was obscured in the regular MR imaging.
Keywords: MAVRIC, MRI, CT, Artifact Reduction
Topic(s):Physics
Biology
Presentation Type: Oral Paper
Session: -3
Location: MG 1096
Time: 1:30