The AMRIS Facility is looking forward to making a state-of-the-art 3T Siemens Prisma whole body scanner available to users beginning in January 2017 with full service scanning supported beginning in February. The proposed instrument will provide much needed advanced technologies unavailable on our current nine-year-old 3T MRI/S system, which will continue as part of the AMRIS Facility expansion of the only research-dedicated 3T MRI/S instruments in the northern Florida (Gainesville-Jacksonville) area. This new Siemens Prisma includes simultaneous multi-slice (SMS) techniques for functional MRI (fMRI) and diffusion imaging (dMRI) as outlined in the Human Connectome Project, whole-body scanning, cross-compatibility with MRI/S facilities at other institutions for multi-center studies, and alignment of UF imaging with big data multi-site studies for Alzheimer’s disease, Parkinson’s disease and the NIH Adolescent Brain Cognitive Development (ABCD) Study. The SMS techniques and powerful gradients with a combined effective strength of 139 mT/m and a maximum slew rate of 346 T/m/s will enable higher resolution brain studies in a shorter period of time and will increase the number of research studies the facility can support. Whole body scanning capabilities will enable needed correlative measurements in obesity, diabetes, osteoarthritis, aging and dystrophy studies.
This new state-of-the-art MR scanner will include an 3T magnet, an unmatched 80 mT/m @ 200 T/m/s gradient system, parallel transmit capabilities, a series of MR coils and pulse sequence packages for advanced MR imaging and spectroscopy research of human neuro, body, and MSK systems.
The following are highlights of the technical specifications and capabilities of the Prisma scanner.
- FOV 50x50x50 cm3
- Advanced shimming technology, allowing for maximized magnetic field homogeneity
- Benchmark magnet homogeneity (typ. 1.1 ppm)
- Zero Helium Boil-off Technology
- Maximum amplitude of 80 mT/m and maximum slew rate of 200 T/m/s on each axis simultaneously, enabling high SNR and high resolution imaging throughout all regions of the body
- High-performance cooling for each individual axis, allowing full duty cycle over long-duration scanning with outstanding stability.
- All axes force compensated for lowest vibrations and acoustic performance
- Dedicated force compensation on each axis, yielding low vibrations and low acoustic noise
Tim® 4G architecture
- Tim® 4G (Total Imaging Matrix in the 4th generation) RF system with 48, 64 or 128 independent channels for faster imaging and higher SNR
- Full body imaging capability: connecting up to 204 coil elements simultaneously, enabling one patient setup, no repositioning, no changing of coils
- Increased patient comfort and optimized workflow efficiency
- Ultra-light-weighted coils with high density of coil elements for increased SNR
- DirectRF® Transmit/Receive technology, allowing fully digital transmit and receive
Parallel transmit with TimTX TrueShape® technology
- Dynamic parallel transmission of RF pulses and shaping the RF excitation field locally, enabling selective excitation
- MR imaging and spectroscopy applications through optimized image homogeneity or efficient selective excitation
- “Zoom in” imaging with significantly reduced scan times and less artifacts
Tim® 4G Coils
- 64-channel Head/Neck
- 20-channel Head/Neck
- 18-channel Body
- Small (4-ch) & Large (4-ch) Flex
- 15-channel T/R Knee
- 32-channel Spine
- 36-channel Peripheral Angio