Risk of overheating animals.
Laboratory animals are precious creatures. Always handle them with great care. The
following factors might lead to a temporary rise in body temperature during
measurements due to Specific Absorption Rate (SAR):
excessive RF power
excessive gradient usage
or due to too high ambient temperature:
too high water temperature of the animal body conditioning unit
malfunction of the gradient air cooling
Permanently supervise the animal’s health status during MRI measurements,
especially body temperature and respiration rate. Stop the measurement
immediately if physiological parameters leave their normal physiological range.
To reduce SAR, increase repetition time (TR), or reduce matrix or resolution of
the method if applicable.
To reduce ambient temperature, reduce the water temperature of the body
conditioning unit or use air conditioning. Check that the air flow through the
gradient fans is not restricted.
Risk of peripheral nerve stimulation of animals.
Excessive gradient usage may lead to peripheral nerve stimulation during
measurements.
Permanently supervise the animal’s health status during MRI measurements.
Should the situation arise stop the measurement immediately.
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