Matthew and Dr. Harms,
The PDF on the link makes this much easier to understand. I will keep that in mind in the parameter copies in the future but now I know what to look for. Thank you both again. On Thu, Nov 10, 2016 at 8:49 AM, Harms, Michael <[email protected]> wrote: > > Hi, > Couple things: > 1) That LSCMRR_3T_printout_2014.08.15.pdf protocol is a bit outdated. I’d > suggest that you see the following > http://protocols.humanconnectome.org/CCF/ > where you can download a zip package with both an importable protocol (for > Siemens Prisma) and an updated protocol printout (PDF), complete with > change/version history. > > 2) There is a “Invert RO/PE polarity” flag on the Sequence:Special tab > that we use to invert the polarity for the “PA” scans. We’ve found that > trying to set “P>>A” on the Routine tab is not reliable. > > cheers, > -MH > > -- > Michael Harms, Ph.D. > > ----------------------------------------------------------- > Conte Center for the Neuroscience of Mental Disorders > Washington University School of Medicine > Department of Psychiatry, Box 8134 > 660 South Euclid Ave.Tel: 314-747-6173 > St. Louis, MO 63110Email: [email protected] > > > > > On 11/10/16, 8:18 AM, "[email protected] on behalf of > dgw" <[email protected] on behalf of > [email protected]> wrote: > > If you copy parameters on the scanner and the Phase encoding direction > is different, the scanner will pop up a warning that it is reverting > the phase encoding direction (you then need to change the phase > encoding direction back). What I have done in the past to deal with > this is do it carefully the first time, but then on subsequent > direction sets to copy parameters between the scans with the same > phase encode direction. > > hth > d > > On Wed, Nov 9, 2016 at 6:59 PM, Glasser, Matthew <[email protected]> > wrote: > > I believe there is another variable in the sequence that causes the flip. > > > > Peace, > > > > Matt. > > > > From: <[email protected]> on behalf of Thomas > DeRamus > > <[email protected]> > > Date: Wednesday, November 9, 2016 at 5:57 PM > > To: "[email protected]" <[email protected]> > > Subject: [HCP-Users] Question about UMinn 3T PRISMA dMRI_98_AP & PA > >Sequence > > > > Hi HCP Users, > > > > > > Our center recently began using the UMinn 3T PRISMA protocols and I > >noticed > > some minor distortion in the vmPFC region. I was planning on applying > >FSL's > > topup to try and correct for this but when I was making the phase > >encoding > > text file I noticed in the protocol that both the DWI_dir98_AP and > > DWI_dir98_PA seem to use A >> P phase encoding. > > > > > > > >http://lifespan.humanconnectome.org/data/LSCMRR_3T_printout_2014.08.15. > pdf > > > > Does that mean that both are AP? I remember seeing the same when we first > > started the AP sequence on the scanner and that doesn't seem correct. > > > > > > > > I also noticed the only differences in the the b-tables were for the > >vector > > values for b0's in AP vs PA, with the rest the same. May I ask why this > >is > > or if it has anything to do with the phase encoding? > > > > > > -- > > Thomas DeRamus > > UAB Department of Psychology, Behavioral Neuroscience > > Graduate Research Trainee > > Civitan International Research Center > > 1719 6th Ave S, Suite 235J, Birmingham, AL 35233 > > Phone: 205-934-0971 Email: [email protected], [email protected] > > > > _______________________________________________ > > HCP-Users mailing list > > [email protected] > > http://lists.humanconnectome.org/mailman/listinfo/hcp-users > > > > > > > > ________________________________ > > > > The materials in this message are private and may contain Protected > > Healthcare Information or other information of a sensitive nature. If you > > are not the intended recipient, be advised that any unauthorized use, > > disclosure, copying or the taking of any action in reliance on the > >contents > > of this information is strictly prohibited. If you have received this > >email > > in error, please immediately notify the sender via telephone or return > >mail. > > > > _______________________________________________ > > HCP-Users mailing list > > [email protected] > > http://lists.humanconnectome.org/mailman/listinfo/hcp-users > _______________________________________________ > HCP-Users mailing list > [email protected] > http://lists.humanconnectome.org/mailman/listinfo/hcp-users > > > ________________________________ > The materials in this message are private and may contain Protected > Healthcare Information or other information of a sensitive nature. If you > are not the intended recipient, be advised that any unauthorized use, > disclosure, copying or the taking of any action in reliance on the contents > of this information is strictly prohibited. If you have received this email > in error, please immediately notify the sender via telephone or return mail. > > _______________________________________________ > HCP-Users mailing list > [email protected] > http://lists.humanconnectome.org/mailman/listinfo/hcp-users > -- *Thomas DeRamus* UAB Department of Psychology, Behavioral Neuroscience Graduate Research Trainee Civitan International Research Center 1719 6th Ave S, Suite 235J, Birmingham, AL 35233 *Phone*: 205-934-0971 *Email:* [email protected], [email protected] _______________________________________________ HCP-Users mailing list [email protected] http://lists.humanconnectome.org/mailman/listinfo/hcp-users
