The relevant parameters for analyzing the functional MRI sequence data are available in the NeuroMod DataLad file. The functional input settings are all identical to those used in the hcptrt dataset. You will find the Siemens exam card here and is briefly summarized below. Functional MRI data were collected using a sequence of accelerated and graduated planar echo images (Xu et al., 2013) developed at the Center for Magnetic Resonance Research (CMRR) University of Minnesota as part of the Human Connection Project (Glasser et al., 2016). The sequence is available on the Siemens PRISMA scanner at UNF by a concept for production (C2P) and has been used with the following parameters: acceleration factor slice – 4, TR – 1.49 s, TE – 37 ms, rotation angle – 52 degrees, voxel size – 2 mm x 2 mm 2 mm, 60 discs, detection matrix 96×96. During each session, a short recording (3 volumes) was made in the opposite direction of phase coding, to allow a retrospective correction of the distortion induced by the innomerization of the B0 field. The multi-band EPI sequences developed by CMRR are now available from other institutions on Siemens scanners compatible in the C2P contract with CMRR and Siemens. Stability scans are MULTI-Slice-EPI scans that measure 16 slices with 500 times. The scan is performed 5-6 times a day over a period of 1 hour. This sequence, which includes automated analysis of scanner data immediately after image reconstruction, was developed by our employees at the Martinos Center for Biomedical Imaging at Massachusetts General Hospital and is available from MGH through a C2P agreement with MGH, Siemens and Harvard. The available sequence variants and supported software versions are listed below. If you are interested in obtaining these sequences, CMRR C2P instructions and agreement can be found on the website of the University of Minnesota Office for Technology Commercialization. After executing a C2P agreement and receiving an access password, the binary sequence files can be downloaded here by selecting the desired output number.
I`m afraid to send us this topic. For voxel sizes less than 2mm, the people at my center chose the TOPUP approach with the SE-MB-EPI with two phase coding directions, mainly because of the long detection period required for a real field map. I still have a few people who use real field maps, but only for more than 2mm De Voxel. I also have people who do broadcast imagery with MB, who have 2mm Voxel and who still decide for TOPUP, again for the time being. Data from stability scans have been ongoing since December 2011 (text format – subject of “Stability runs on MRC35380”). To minimize movement, each scanning participant wears a custom custom head head, built by Caseforge. Head worries are milled on the basis of a head scanner of each participant generated using a 3D manual scanner and the shape of the MRI coil. Caseforge strawberries custom head bags in blocks of Styrofoam. These sequences and the accompanying reconstructions are actively developed as key components of the Human Connectome Project.
Setsompop K, Cohen-Adad J, Gagoski BA, Raij T, Yendiki A, Keil B, Wedeen VJ, LL Forest. Improved diffusion MRI with multi-slice echo planare imaging. Neuroimage. 2012 Oct 15;63 (1):569-80. [PubMed] An optional remote reconstruction server is available, which drastically improves the speed of image reconstruction for demanding studies. Sotiropoulos SN, Moeller S, Jbabdi S, Xu J, Andersson JL, Auerbach EJ, Yacoub E, Feinberg D, Setsompop K, Wald LL, Behrens TEJ, U`urbil K, Lenglet C. Impact of image reconstruction on multi-diffusion MRI fibrous orientation modeling: noise reduction. Magn Reson Med. 2013;70(6):1682-1689. [PubMed] Xu J, S, Auerbach EJ, Strupp J, Smith SM, Feinberg DA, Yacoub E, U`urbil K. Evaluation of disk accelerations using 3T multiband echoplanar imaging.