Phase vs freq encoding
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11-08-2015, 10:35 PM
Post: #2
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RE: Phase vs freq encoding
Yes it can. I've been thinking about this a bit, but I haven't sat down to do the math, there is probably a good reason for it. But if anyone would like to go ahead here it is:
To assign isotropic voxels a unique frequency in one shot, your gradient strengths would be, in whatever order makes the most sense - Gz:Gy:Gx = FOVz:FOVy:FOVx. Now the resolution of your Fourier transform is going to be 1/N*dt or 1/T one over total sampling time. Strongest gradient I have ever heard of is 300 mT/m, I think that is the record. Lastly your signal strength due to gradient dephasing is going to be I think sinc(gammaH*Gz*FOVz/2) * t)sinc(gammaH*Gy*FOVy/2 * t)*sinc(gammaH*Gx*FOVx/2 * t). Keep in mind T2 and T2* and see what is feasible. (11-04-2015 07:32 AM)univox_high_flyer Wrote: Hi, |
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Messages In This Thread |
Phase vs freq encoding - univox_high_flyer - 11-04-2015, 07:32 AM
RE: Phase vs freq encoding - AndrewBworth - 11-08-2015 10:35 PM
RE: Phase vs freq encoding - AndrewBworth - 11-08-2015, 11:12 PM
RE: Phase vs freq encoding - AndrewBworth - 12-10-2015, 08:40 AM
RE: Phase vs freq encoding - Elad P - 02-16-2017, 02:34 PM
RE: Phase vs freq encoding - Carenasage - 09-26-2017, 10:21 PM
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