FWIW, while you should use DICOM field (0019, 1018) as Matt said, I believe that the correct formula to come close to that would be:
DwellTime = 1 / (PixelBandwidthInReadOutDirection * nReadOut * 2)
where
PixelBandwidthInReadOutDirection = DICOM (0018,0095)
nReadOut = MatrixSize in the READOUT direction
and the factor 2 is to account for the 2x oversampling that is automatically applied.
I believe that you can get nReadOut as the 2nd element of (0051 100b).
Not sure if that formula handles all possibilities, but try it and see if the ensuing result isn't closer to what is contained in (0019, 1018).
(It matches for HCP data, acquired with iPAT = 2).
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 63110
Email: mha...@wustl.edu
From: <Glasser>, Matt Glasser <glass...@wusm.wustl.edu>
Date: Tuesday, November 25, 2014 10:47 AM To: Matthew George Liptrot <matthew.lipt...@di.ku.dk>, "hcp-users@humanconnectome.org" <hcp-users@humanconnectome.org> Subject: Re: [HCP-Users] PreFreeSurferPipeline
Peace,
Matt.
From: Matthew George Liptrot <matthew.lipt...@di.ku.dk>
Date: Tuesday, November 25, 2014 at 9:40 AM To: "hcp-users@humanconnectome.org" <hcp-users@humanconnectome.org> Subject: [HCP-Users] PreFreeSurferPipeline Hi,
I’ve been adapting the extremely useful HCP pipelines for application to our own data, and would like some advice regarding the PreFreeSurferPipeline.
Many thanks in advance for any pointers
Cheers,
M@
--
Department of Computer Science
University of Copenhagen
&
Section for Cognitive Systems
Department of Applied Mathematics and Computer Science
Technical University of Denmark
_______________________________________________ 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. _______________________________________________ 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] PreFreeSurferPipeline Matthew George Liptrot
- Re: [HCP-Users] PreFreeSurferPipeline Glasser, Matthew
- Re: [HCP-Users] PreFreeSurferPipeline Harms, Michael
- Re: [HCP-Users] PreFreeSurferPipeline Matthew George Liptrot