7T MRI Facility
The 7T Facility is located on the basement level of the Nutrition Research Building. This facility houses a Bruker Biospin 7T microMRI scanner.
John Olson, MS is the Coordinator of the Small Animal Imaging Facility. Please see the caliber of 7T images below. MR techniques currently available on this scanner include:
- In vivo mouse, rat, and non-human primate imaging with sub 0.1mm resolution
- Magnetically labeled cell tracking
- Mouse and rat cardiac and atherosclerosis imaging
- Proton Spectroscopy
- Diffusion Tensor Imaging
- See imaging examples
7T Bruker microMR Scanner
Superconducting Magnet System
- Actively-shielded superconducting wide-bore magnet
- Nitrogen free (no cryogenic maintenance by customer)
- Cryo-refrigerator (Minimal helium consumption, long hold-times, long maintenance intervals)
- Reduced stray field
- Screening against external field perturbations
- Table attached to the magnet front side with integrated rail for animal handling system
- Field strength: 7 T
- Diameter of clear bore: > 300 mm
- Stray-field (5 Gauss): +/- 3 m axial, +/- 2 m radial
- Length: 1.45 m
- Diameter: 1.655 m
- Passive RT shim system
- Vibration damping (absorber)
Gradient system B-GA 20S with RT-shim and related power supplies
- Actively shielded gradients
- Integrated shim set up to 2nd order
- Outer / inner diameter: 301.5 mm / 200.5 mm
- Gradient amplitude: 200 mT/m
- Max. slew rate: 1100 T/m/s
- Linearity 130 / 100 mm DSV: < ± 3%, < ± 2%
- Water cooled
Gradient system BGA12-S with RT-shim and related power supplies
- Actively shielded gradients
- Integrated shim set 1st & 2nd order
- Outer/inner diameter 206mm / 116 mm
- Gradient amplitude 660 mT/m
- Max slew rate: 4570 T/m/s
- Linearity/DSV (+/- %/mm) 3/130
- Water cooled
Gradient system BGA6-S
- Actively shielded gradients
- Integrated shim set; up to 2nd order
- Outer / inner diameter: 113mm / 60mm
- Gradient amplitude: 1000 mT/m
- Max. slew rate: 11250 T/m/s
- Linearity/DSV (+/- %/mm) 5/35
- Water cooled
- User Interface: Linux Workstation
- ParaVision4.0
- Topspin1.5
- Jive6.0
RF Coils
- Volume coils
- Litzcage RF Volume coils
- 25 mm (mice), 38 mm (live rat brains), 50 mm (rat brains)
- Bruker 72 mm volume coil (rats up to 600 grams)
- Bruker 150 mm volume coil (non-human primate brains)
- Surface coils
- 25 mm (Tx/Rx), 35 mm (Rx only)
Anesthesia/Monitoring
- Surgivet anesthesia machine - Isoflurane and oxygen
- SA Instruments animal monitoring
- ECG monitoring, respiratory monitoring, temperature monitoring
- Animal warmer – temperature maintained with thermostatically controlled warm air