15 T scanner

4.7 T scanner

In November 2016, we started to investigate using the 4.7 T scanner for hemi or whole brain scans. Lee met with Chris Farrar to try to set this up, but there were many issues (mostly since we have to use the largest gradient set, which nobody else uses. After discussing with Bruce, we put using this scanner on hold until we get support from the center. Here are some notes from this setup:

to build our own if we want to acquire multiple channel data.

need, so the transmitter voltage (or some Bruker equivalent) did not converge. Chris said that he could contact Bruker so that this could be changed since he thought it was set at a conservative level. We had to set it to a lower, non-ideal value to scan anything.

1mm FLASH scan. This isn't enough to cover a whole hemi. I'm not sure exactly whether he thought a larger FOV would put too much strain on the system, or that he saying to use that for testing. We intially tried using 128 slices and it wouldn't run. I can follow up more with him and/or Joe about that.

different gradient coil, and it wouldn't load in the program. I could follow up with them to get a print out or some other usable form so I can see what they run.

different. It was difficult to set up a flash scan, and I wasn't sure what to for a diffusion protocol at all without an example. It would probably take some help to get hemi/whole brain scans set up, or at least some time reading the manuals and getting familiar with it.

inside the FOV. ParaVision also crashed and closed out completely twice while I was trying to view an image.

of the scanner doesn't close completely (or it's just very loud). This makes it hard to try to debug/work on a protocol with someone while a scan is going on.

gradient inserts, so we would have to have Chris take out/put in the gradients when we start/finish. Eventually, we could do this ourselves but he said only experienced users are allowed to do that.