Value Assessment of Orthogonal Phase Encoding Reduction Artifacts, O.P.E.R.A.

Motivation: Artifacts are common in MR and reduce the image quality, and led to a degradation of the radiographer's work. We developed a retrospective method, Orthogonal Phase Encoding Reduction Artifacts (OPERA) which works on DICOM images. Goal(s): To test the value assessment of OPERA on several anatomic regions in a Clinical Study on a Public General Hospital. Approach: A total of 604 MR exams were acquired on 585 patients by using an 1.5T scanner. The OPERA-images were compared with standard images per Artifacts, Signal-Noise-Ratio, and scan-time by two radiologists. Results: OPERA algorithm reduced the repeated sequences of 5.9% and the additional sequences of 2.17%. Impact: Opera requires no hardware modifications. OPERA is a post-processed software and works on DICOM, so it is applicable on any type of MRI scanner. OPERA reduce Motion Artifact, and consequently could reduce the number of repeated sequences on uncooperative patient.