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Siemens 3T Prisma

    

upgradeRecently, one of our 3T Trios was upgraded to a Prisma, which is the latest technology from Siemens. This scanner has twice the gradient strength of the old TIM Trio system (80mT/m) with modern day electronics. It is equipped with a 20 channel head coil and a 64 channel head/neck coil. The 64 channel is similar to the 32 channel head coil on the Trio in size, and is the recommended coil for all multiband scans, as the higher number of coil elements allows better separation of the simultaneously excited slices. To assist investigators in planning their protocols on the new system, we offer 3 levels of protocols depending on how far investigators would like to push the limits of this new technology:

Trio-like: same settings as TRIO will get SNR gain from electronics

Advanced: Slice acceleration of 2, TR=2s, 56 slices with TE=25ms and 2mm isotropic for BOLD, higher DTI quality due to shorter echo time. Structural scans use a navigator to reduce motion sensitivity 1mm isotropic but has a ringing artifact when you run the 5 minute scan.Prisma

High end: slice acceleration of 2 and ipat2 for Bold Task with 1.7mm isotropic; for resting state slice acceleration of 8 for 2mm isotropic resolution with a TR of 555ms! DTI is slice accelerated by 4 and is a 2 shell (b=1000 and 2000) for 64 directions with other setups available. Structural scans use a navigator to reduce motion sensitivity with 0.8mm isotropic resolution but has a ringing artifact when you run the 5 minute scan.

Please contact neuro CTI personnel for further details and to setup your protocol.