Triage Radiology Imaging Assessment for Greater Effectiveness

Inclusion Criteria: For main trial * Adult patient (≥ 18 years of age) at the time of MRI. * Brain MRI scan performed at a participating NHS site during the defined study period (intervention or control arm). * Brain MRI scan series will automatically be included if they contain the required scan sequences and are of the required resolution. For O3 subgroup ● Radiologists, radiographers, and referring clinicians involved with the use of the MIDI tool at sites who consent to completing the staff survey For O7 subgroup * Adult patient (≥ 18 years of age) at the time of MRI. * Brain MRI scan performed at a participating NHS site during the defined study period (intervention or control arm). * Brain MRI scan series will automatically be included if they contain the required scan sequences and are of the required resolution. * Patient with suspected de novo stroke/TIA in TIA/Stroke pathway. * Patient with suspected de novo stroke/TIA in Acute Neurology pathway. * Patient with suspected de novo stroke/TIA identified via SSNAP review. For O8 subgroup * Adult patient (≥ 18 years of age) at the time of MRI. * Brain MRI scan performed at a participating NHS site during the defined study period (intervention or control arm). * Brain MRI scan series will automatically be included if they contain the required scan sequences and are of the required resolution. * Patient with stage III/IV malignant melanoma undergoing regular surveillance MRI brain scans presenting with de novo brain…