The utility model relates to the technical field of magnetic
resonance, in particular to an auxiliary MRI (
Magnetic Resonance Imaging) fixer and an MRI coil device. The fixator for assisting MRI comprises a carrier which is formed into a long shape extending in a first direction and is configured to carry an examined animal subjected to magnetic
resonance examination, and the body length direction of the examined animal corresponds to the first direction; the anaesthetic
mask is installed on the carrier and provided with a mouth and
nose receiving cavity which is gradually narrowed in the first direction away from the detected animal, and the anaesthetic
mask is configured to receive the mouth and the
nose of the detected animal through the mouth and
nose receiving cavity and provide anaesthetic support for the detected animal; the tooth
tractor is configured to pull teeth of the detected animal in the first direction away from the detected animal, so that the head of the detected animal abuts against the
cavity wall of the mouth and nose receiving cavity, and movement of the head is limited.