Step 1: If a case returns 0 for the Procedure Type: Diagnostic Imaging (CT, MRI, PET Scans) phenotype, return 0. If not proceed to step 2.
Step 2: If a case contains any of the MRI procedure text and returns 1 for the Procedure Type: Diagnostic Imaging (CT, MRI, PET Scans) phenotype, return 1. If not, proceed to step 3.
Step 3. If a case contains any of the MRI procedure text and returns 2 for the Procedure Type: Diagnostic Imaging (CT, MRI, PET Scans) phenotype, return 2. If not, return 0.
MRI Procedure Text