Association Between MRI Case Volume and Confidence in Interpretation Among Current and Recently Graduated Canadian
Courtney Cheng1, Natasha Larocque2, William Warnica1
1Department of Medical Imaging, McMaster University, 1280 Main St W, Hamilton, ON L8S 4L8, Canada (C.C., W.W., Y.K.K.).
Academic Radiology
|February 28, 2026
Summary
Higher magnetic resonance imaging (MRI) case volumes significantly boost diagnostic radiology residents
Area of Science:
- Radiology and Medical Imaging
- Medical Education
Background:
- The increasing use of magnetic resonance imaging (MRI) necessitates skilled interpretation by radiology trainees.
- Residents often report insufficient MRI training due to limited case exposure.
Purpose of the Study:
- To assess the correlation between MRI case volume and diagnostic radiology residents' confidence in MRI interpretation.
- To identify factors influencing both MRI case volume and interpretation confidence.
Main Methods:
- A retrospective analysis of MRI case volumes from 2018-2023.
- An online survey administered to current and recent residents of a Canadian diagnostic radiology program.
Main Results:
- A strong positive association was found between current residents' MRI case volume and their confidence in MRI interpretation (r = 0.9, P < 0.001).
- A moderate positive trend was observed for recent graduates (r = 0.4, P = 0.09).
- Structured MRI rotations, resident proactivity, and staff teaching engagement were identified as key influencing factors.
Conclusions:
- Increased MRI case volume is directly linked to enhanced confidence in MRI interpretation among residents.
- Dedicated subspecialty MRI rotations, resident initiative, and faculty involvement are critical for improving resident confidence and expertise.
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