- Research Article
- 10.56496/gqlu7114
The effect of magnetic resonance imaging on the body temperature of anaesthetised dogs
- Dec 14, 2025
- Veterinary Nursing Journal
- Charley Humphreys + 2 more +2
This study investigates the effects of magnetic resonance imaging (MRI) procedures on the body temperature of anaesthetised dogs, with attention given to underlying mechanisms and contributing factors. Hypothermia is identified as a key concern, given its detrimental impact on the cardiovascular, respiratory, endocrine and immune systems. The study demonstrates that dogs undergoing MRI typically experience a reduction in body temperature, which is significantly affected by their body condition score (BCS) and the duration of the scan. A higher BCS correlates with a smaller temperature decrease, while longer scan times result in a greater temperature loss. The inability to use active warming devices, due to the MRI scanner's magnetic field, exacerbates patient heat loss during scans. Limitations of the study include a small, heterogeneous sample, inconsistent documentation of BCS, variability between the brands of thermometer used and the subjective nature of BCS assessment. The results emphasise the importance of vigilant temperature monitoring and management by veterinary nurses, with recommendations made to keep scan times as brief as possible. The study discourages the promotion of above-ideal BCS, owing to the associated health risks. Overall, it advocates for practices that minimise hypothermia and protect the welfare of canine patients during MRI investigations.
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