Animal Setup
The MRI CryoProbe™ setup includes a dedicated animal cradle which is optimized for the use with the Centering Tube. It includes a temperature stabilization unit (water tubes which can be connected to an external water reservoir), a nose cone for administration of gaseous anesthesia (see Figure Recommended setup (1) with tooth bar (2), and ear pins (3) for stereotactic fixation.
We recommend monitoring and stabilizing the animal body temperature not only during the experiment, but also during the setup. A mouse under hypothermic conditions (decreased body temperature) may start gasping, a motion, which could disturb the image quality dramatically and which is sometimes hard to eliminate even with respiratory triggering due to its non-periodic appearance.
If you are using gaseous anesthesia we recommend pulling the animal’s nose with the tooth bar into the cone to fixate the frontal part of the mouse head. Additionally, the stereotactic fixation should be used by carefully pushing the ear pins into the external auditory canal of the mouse (see Figure Recommended setup (3).
Alternatively, the animal head may be fixated with tape, which must be wrapped tightly around the mouse head (see the following figures). Keep in mind that for the experiment the final position of the mouse head should be as close as possible to the surface of the coil.
