Please post questions to the HCP-Users list, so that others can benefit, and so that others in the HCP Consortium can respond.
1) If you have the "preprocessed" dMRI data, then yes it has undergone eddy current correction. However, correction for the gradient nonlinearities (by using the "grad_dev.nii.gz" file) needs to occur in the model fitting software that you are using. 2) I can't help you there. It is very likely an issue with the software you used, or how you applied the HCP data to it. If you provide details regarding exactly which software platform/algorithm you used, and what you did, then perhaps someone else on the list with experience with that software platform might be able to help you. 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: [email protected] On 6/27/13 3:33 PM, "Su-Chun Huang" <[email protected]> wrote: >Hello Micheal, > >thank you for your reply, I have some more questions here: > >1) Is the data we download already undergo eddy current corrected or we >have to use the gra_dev map to do correction by ourselves? >2) I used DTI algorithm to reconstruct the data I downloaded yesterday, >however, the reconstructed corpus callosum only have the body part, both >genu and splenium disappeared. I attached the reconstructed tract, could >you tell me why this happens? > >Thank you very much, > >Su > >On Thu, 27 Jun 2013, Harms, Michael wrote: > >> >> Hi Robert, >> That is the gradient table as specified on the Connectome Skyra scanner >>for acquisition, but you should not use it for analyzing HCP dMRI data >>for two reasons: >> 1) It doesn't take into account the effect of the imaging gradients on >>the b-vectors. This effect is accounted for in the "bvec" information >>stored by Siemens in the DICOMs >> 2) The dMRI is acquired with an oblique orientation (as set by Siemen's >>AutoAlign feature) that is unique for each subject. This effect is >>accounted for by the rotation that 'dcm2nii' applies during DICOM >>conversion. >> >> If you use the "unproc" packages that we provide, all of this is >>already taken care of. Since HCP is not currently releasing the >>original DICOMs, this is your best way to get the "raw" data with an >>appropriate set of bval and bvec files for each subject. >> >> Further, if you use the "preproc" dMRI packages (available currently >>for 40 subjects) the eddy current distortions are already accounted for >>and the capability is provided (via the "grad_dev.nii.gz" file) to >>account for the impact of the gradient nonlinearities. >> >> 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: [email protected] >> >> From: Jennifer Elam <[email protected]> >> Date: Thursday, June 27, 2013 3:05 PM >> To: "'mchugh, robert'" <[email protected]>, >>"[email protected]" <[email protected]> >> Subject: Re: [HCP-Users] dMRI gradient table >> >> Hi Robert, >> >> >> >> The gradient table is in the attached .txt file and below. >> >> >> >> Best, >> >> Jenn >> >> >> >> Jennifer Elam, Ph.D. >> Outreach Coordinator, Human Connectome Project >> Washington University School of Medicine >> Department of Anatomy and Neurobiology, Box 8108 >> 660 South Euclid Avenue >> St. Louis, MO 63110 >> 314-362-9387 >> [email protected] >> www.humanconnectome.org >> >> >> >> >> >> ### Gradient direction table for Human Connectome Project (HCP) dMRI >>(WU-Minn >> >> ### consortium). Each table acquired once with right-to-left and >>left-to-right >> >> ### phase encoding polarities, using the CMRR multiband diffusion >>sequence, >> >> ### with bmax = 3000 s/mm^2. Shells at 1000, 2000, and 3000 s/mm^2 are >> >> ### obtained through appropriate weighting of the vector norm. >> >> ### >> >> ### The diffusion directions were obtained using a toolbox available >>from >> >> ### INRIA that returns uniformly distributed directions in multiple >>q-space >> >> ### shells. The directions are optimized so that every subset of the >>first M >> >> ### directions is also isotropic. References and the INRIA toolbox can >>be >> >> ### found at: >> >> ### >>http://www-sop.inria.fr/members/Emmanuel.Caruyer/q-space-sampling.php >> >> ### >> >> ### NOTE: These gradient directions were tested for use on the HCP >>customized >> >> ### Skyra scanner with 100 mT/m gradients and may not be optimal for >>use with >> >> ### other scanner systems. >> >> ### >> >> ### Further questions can be directed to the HCP Data Users mailing list >> >> ### ([email protected]) by signing up at >> >> ### http://www.humanconnectome.org/contact >> >> >> >> # segment 1/3 with interleaved shells. Interleaved bval ratio 1:2:3 >> >> [directions=95] >> >> CoordinateSystem = xyz >> >> Normalisation = none >> >> Vector[0] = ( 0.000, 0.000, 0.000 ) >> >> Vector[1] = ( -0.533, 0.147, -0.167 ) >> >> Vector[2] = ( -0.303, -0.642, 0.404 ) >> >> Vector[3] = ( 0.106, -0.563, -0.819 ) >> >> Vector[4] = ( 0.110, 0.550, 0.137 ) >> >> Vector[5] = ( 0.430, -0.713, 0.554 ) >> >> Vector[6] = ( 0.590, -0.467, -0.317 ) >> >> Vector[7] = ( -0.193, -0.092, 0.536 ) >> >> Vector[8] = ( 0.483, 0.180, 0.633 ) >> >> Vector[9] = ( 0.898, 0.410, -0.161 ) >> >> Vector[10] = ( -0.106, 0.462, -0.330 ) >> >> Vector[11] = ( -0.212, 0.048, 0.787 ) >> >> Vector[12] = ( -0.852, 0.483, 0.203 ) >> >> Vector[13] = ( -0.234, -0.234, -0.473 ) >> >> Vector[14] = ( 0.795, 0.184, 0.027 ) >> >> Vector[15] = ( 0.281, 0.960, -0.011 ) >> >> Vector[16] = ( 0.000, 0.000, 0.000 ) >> >> Vector[17] = ( -0.519, -0.143, 0.208 ) >> >> Vector[18] = ( -0.356, 0.686, -0.264 ) >> >> Vector[19] = ( 0.102, 0.251, -0.963 ) >> >> Vector[20] = ( -0.753, -0.183, -0.632 ) >> >> Vector[21] = ( -0.318, 0.393, 0.280 ) >> >> Vector[22] = ( -0.146, -0.714, -0.369 ) >> >> Vector[23] = ( 0.453, 0.339, 0.117 ) >> >> Vector[24] = ( 0.252, -0.343, 0.697 ) >> >> Vector[25] = ( -0.697, -0.007, 0.717 ) >> >> Vector[26] = ( -0.255, 0.154, -0.494 ) >> >> Vector[27] = ( 0.647, 0.145, -0.476 ) >> >> Vector[28] = ( 0.318, -0.929, -0.189 ) >> >> Vector[29] = ( -0.276, -0.435, 0.260 ) >> >> Vector[30] = ( 0.711, -0.308, 0.256 ) >> >> Vector[31] = ( 0.508, 0.690, 0.516 ) >> >> Vector[32] = ( 0.000, 0.000, 0.000 ) >> >> Vector[33] = ( 0.293, 0.713, -0.638 ) >> >> Vector[34] = ( -0.347, 0.460, -0.036 ) >> >> Vector[35] = ( -0.500, -0.640, -0.085 ) >> >> Vector[36] = ( -0.130, 0.242, 0.507 ) >> >> Vector[37] = ( -0.198, 0.516, 0.601 ) >> >> Vector[38] = ( 0.847, -0.308, 0.433 ) >> >> Vector[39] = ( -0.521, 0.150, 0.199 ) >> >> Vector[40] = ( 0.282, 0.105, 0.954 ) >> >> Vector[41] = ( -0.033, 0.815, -0.041 ) >> >> Vector[42] = ( 0.579, -0.515, -0.632 ) >> >> Vector[43] = ( 0.478, 0.107, 0.305 ) >> >> Vector[44] = ( 0.198, 0.364, -0.704 ) >> >> Vector[45] = ( 0.003, -0.567, 0.107 ) >> >> Vector[46] = ( 0.645, 0.346, 0.362 ) >> >> Vector[47] = ( -1.000, -0.001, -0.011 ) >> >> Vector[48] = ( 0.000, 0.000, 0.000 ) >> >> Vector[49] = ( 0.022, 0.275, -0.507 ) >> >> Vector[50] = ( 0.778, -0.181, -0.172 ) >> >> Vector[51] = ( -0.082, 0.935, -0.345 ) >> >> Vector[52] = ( 0.638, 0.726, -0.258 ) >> >> Vector[53] = ( -0.029, -0.442, -0.371 ) >> >> Vector[54] = ( 0.131, 0.265, 0.761 ) >> >> Vector[55] = ( 0.387, -0.062, -0.424 ) >> >> Vector[56] = ( 0.449, -0.357, 0.819 ) >> >> Vector[57] = ( 0.368, -0.711, -0.163 ) >> >> Vector[58] = ( 0.376, -0.323, 0.296 ) >> >> Vector[59] = ( 0.553, -0.214, 0.561 ) >> >> Vector[60] = ( -0.044, -0.867, -0.496 ) >> >> Vector[61] = ( 0.333, 0.471, -0.028 ) >> >> Vector[62] = ( -0.585, -0.379, 0.717 ) >> >> Vector[63] = ( 0.611, 0.465, -0.277 ) >> >> Vector[64] = ( 0.000, 0.000, 0.000 ) >> >> Vector[65] = ( 0.073, 0.047, 0.571 ) >> >> Vector[66] = ( 0.496, -0.216, -0.611 ) >> >> Vector[67] = ( 0.682, -0.719, 0.132 ) >> >> Vector[68] = ( 0.572, 0.071, 0.035 ) >> >> Vector[69] = ( -0.060, 0.647, -0.495 ) >> >> Vector[70] = ( -0.832, -0.474, -0.288 ) >> >> Vector[71] = ( -0.154, 0.533, 0.160 ) >> >> Vector[72] = ( -0.331, -0.514, -0.541 ) >> >> Vector[73] = ( 0.917, -0.076, -0.392 ) >> >> Vector[74] = ( 0.355, 0.254, -0.378 ) >> >> Vector[75] = ( 0.623, -0.525, 0.052 ) >> >> Vector[76] = ( 0.276, -0.186, -0.943 ) >> >> Vector[77] = ( 0.324, 0.364, 0.309 ) >> >> Vector[78] = ( -0.101, 0.091, -0.805 ) >> >> Vector[79] = ( 0.277, 0.762, -0.095 ) >> >> Vector[80] = ( 0.000, 0.000, 0.000 ) >> >> Vector[81] = ( 0.493, -0.300, -0.023 ) >> >> Vector[82] = ( -0.330, -0.483, -0.811 ) >> >> Vector[83] = ( -0.551, 0.755, 0.355 ) >> >> Vector[84] = ( -0.381, 0.021, -0.433 ) >> >> Vector[85] = ( 0.757, 0.015, 0.305 ) >> >> Vector[86] = ( -0.079, 0.614, -0.785 ) >> >> Vector[87] = ( 0.098, 0.438, -0.363 ) >> >> Vector[88] = ( 0.442, 0.191, -0.660 ) >> >> Vector[89] = ( -0.553, -0.816, -0.167 ) >> >> Vector[90] = ( -0.308, 0.249, 0.420 ) >> >> Vector[91] = ( 0.154, -0.713, -0.367 ) >> >> Vector[92] = ( 0.696, -0.137, 0.705 ) >> >> Vector[93] = ( 0.357, -0.920, 0.161 ) >> >> Vector[94] = ( 0.476, 0.308, -0.109 ) >> >> >> >> # segment 2/3 with interleaved shells. Interleaved bval ratio 1:2:3 >> >> [directions=96] >> >> CoordinateSystem = xyz >> >> Normalisation = none >> >> Vector[0] = ( 0.000, 0.000, 0.000 ) >> >> Vector[1] = ( -0.813, -0.341, 0.472 ) >> >> Vector[2] = ( 0.208, -0.514, 0.159 ) >> >> Vector[3] = ( -0.772, -0.123, 0.235 ) >> >> Vector[4] = ( 0.427, -0.503, 0.481 ) >> >> Vector[5] = ( -0.055, -0.276, -0.504 ) >> >> Vector[6] = ( -0.678, -0.452, -0.055 ) >> >> Vector[7] = ( -0.286, -0.890, 0.354 ) >> >> Vector[8] = ( -0.197, 0.319, -0.439 ) >> >> Vector[9] = ( 0.135, -0.311, -0.743 ) >> >> Vector[10] = ( -0.935, 0.333, -0.119 ) >> >> Vector[11] = ( -0.263, -0.482, -0.178 ) >> >> Vector[12] = ( -0.030, -0.762, 0.292 ) >> >> Vector[13] = ( -0.013, -0.247, -0.969 ) >> >> Vector[14] = ( 0.568, -0.099, -0.034 ) >> >> Vector[15] = ( -0.370, 0.033, -0.727 ) >> >> Vector[16] = ( 0.934, 0.143, 0.327 ) >> >> Vector[17] = ( 0.000, 0.000, 0.000 ) >> >> Vector[18] = ( -0.110, 0.048, 0.565 ) >> >> Vector[19] = ( -0.265, 0.759, 0.595 ) >> >> Vector[20] = ( 0.667, -0.211, -0.421 ) >> >> Vector[21] = ( -0.166, -0.540, 0.121 ) >> >> Vector[22] = ( -0.408, -0.631, -0.319 ) >> >> Vector[23] = ( -0.416, -0.141, 0.898 ) >> >> Vector[24] = ( -0.430, -0.088, 0.375 ) >> >> Vector[25] = ( 0.431, 0.450, -0.528 ) >> >> Vector[26] = ( 0.026, 0.985, 0.169 ) >> >> Vector[27] = ( 0.455, -0.147, 0.324 ) >> >> Vector[28] = ( 0.396, -0.561, -0.442 ) >> >> Vector[29] = ( -0.776, 0.316, 0.546 ) >> >> Vector[30] = ( 0.141, -0.460, -0.319 ) >> >> Vector[31] = ( 0.798, -0.151, 0.087 ) >> >> Vector[32] = ( -0.205, 0.251, -0.946 ) >> >> Vector[33] = ( 0.000, 0.000, 0.000 ) >> >> Vector[34] = ( -0.398, 0.397, 0.131 ) >> >> Vector[35] = ( -0.688, 0.577, -0.439 ) >> >> Vector[36] = ( 0.029, -0.454, 0.678 ) >> >> Vector[37] = ( 0.195, 0.281, -0.465 ) >> >> Vector[38] = ( 0.522, 0.187, 0.162 ) >> >> Vector[39] = ( -0.089, -0.534, -0.611 ) >> >> Vector[40] = ( 0.613, 0.441, 0.656 ) >> >> Vector[41] = ( 0.290, -0.762, 0.048 ) >> >> Vector[42] = ( -0.767, -0.641, -0.009 ) >> >> Vector[43] = ( -0.125, 0.564, 0.008 ) >> >> Vector[44] = ( -0.639, -0.043, -0.506 ) >> >> Vector[45] = ( 0.205, 0.718, 0.665 ) >> >> Vector[46] = ( 0.245, 0.061, 0.519 ) >> >> Vector[47] = ( 0.165, 0.789, 0.130 ) >> >> Vector[48] = ( -0.245, -0.512, 0.823 ) >> >> Vector[49] = ( 0.000, 0.000, 0.000 ) >> >> Vector[50] = ( 0.059, -0.139, 0.557 ) >> >> Vector[51] = ( -0.569, 0.513, -0.282 ) >> >> Vector[52] = ( 0.507, -0.288, -0.813 ) >> >> Vector[53] = ( -0.433, 0.234, 0.302 ) >> >> Vector[54] = ( -0.430, 0.027, 0.694 ) >> >> Vector[55] = ( -0.969, -0.142, 0.203 ) >> >> Vector[56] = ( -0.183, -0.423, -0.348 ) >> >> Vector[57] = ( 0.475, 0.636, -0.192 ) >> >> Vector[58] = ( -0.534, -0.082, -0.841 ) >> >> Vector[59] = ( 0.444, -0.338, 0.149 ) >> >> Vector[60] = ( -0.115, -0.159, 0.793 ) >> >> Vector[61] = ( 0.120, -0.810, 0.575 ) >> >> Vector[62] = ( 0.707, -0.394, -0.109 ) >> >> Vector[63] = ( -0.404, -0.336, 0.239 ) >> >> Vector[64] = ( -0.671, 0.731, 0.120 ) >> >> Vector[65] = ( 0.000, 0.000, 0.000 ) >> >> Vector[66] = ( 0.389, 0.214, 0.370 ) >> >> Vector[67] = ( 0.583, 0.630, -0.514 ) >> >> Vector[68] = ( 0.503, 0.398, 0.505 ) >> >> Vector[69] = ( -0.312, -0.895, -0.320 ) >> >> Vector[70] = ( -0.552, -0.010, 0.170 ) >> >> Vector[71] = ( -0.726, -0.325, 0.185 ) >> >> Vector[72] = ( 0.028, 0.517, -0.255 ) >> >> Vector[73] = ( 0.243, -0.568, 0.533 ) >> >> Vector[74] = ( 0.615, -0.447, 0.650 ) >> >> Vector[75] = ( -0.094, 0.992, -0.082 ) >> >> Vector[76] = ( -0.255, 0.091, 0.510 ) >> >> Vector[77] = ( 0.360, -0.378, -0.628 ) >> >> Vector[78] = ( 0.270, -0.428, 0.278 ) >> >> Vector[79] = ( 0.099, -0.791, -0.177 ) >> >> Vector[80] = ( 0.958, -0.247, -0.146 ) >> >> Vector[81] = ( 0.000, 0.000, 0.000 ) >> >> Vector[82] = ( 0.002, -0.531, -0.226 ) >> >> Vector[83] = ( -0.031, -0.011, 0.999 ) >> >> Vector[84] = ( 0.176, 0.565, -0.563 ) >> >> Vector[85] = ( 0.549, 0.003, 0.180 ) >> >> Vector[86] = ( 0.292, 0.183, 0.740 ) >> >> Vector[87] = ( -0.754, -0.216, -0.229 ) >> >> Vector[88] = ( 0.529, 0.232, -0.006 ) >> >> Vector[89] = ( -0.347, 0.537, 0.769 ) >> >> Vector[90] = ( 0.942, 0.316, 0.113 ) >> >> Vector[91] = ( -0.107, 0.362, 0.437 ) >> >> Vector[92] = ( -0.530, 0.606, 0.138 ) >> >> Vector[93] = ( -0.882, 0.067, -0.467 ) >> >> Vector[94] = ( -0.479, -0.866, 0.141 ) >> >> Vector[95] = ( 0.205, 0.539, 0.021 ) >> >> >> >> # segment 3/3 with interleaved shells. Interleaved bval ratio 1:2:3 >> >> [directions=97] >> >> CoordinateSystem = xyz >> >> Normalisation = none >> >> Vector[0] = ( 0.000, 0.000, 0.000 ) >> >> Vector[1] = ( -0.711, 0.022, 0.401 ) >> >> Vector[2] = ( -0.039, 0.378, -0.435 ) >> >> Vector[3] = ( 0.510, -0.800, 0.317 ) >> >> Vector[4] = ( 0.607, -0.329, 0.435 ) >> >> Vector[5] = ( -0.318, -0.102, 0.471 ) >> >> Vector[6] = ( 0.003, -0.109, -0.809 ) >> >> Vector[7] = ( -0.826, -0.112, 0.553 ) >> >> Vector[8] = ( -0.290, 0.489, 0.102 ) >> >> Vector[9] = ( -0.578, -0.522, -0.246 ) >> >> Vector[10] = ( -0.205, 0.898, 0.390 ) >> >> Vector[11] = ( 0.345, -0.214, 0.410 ) >> >> Vector[12] = ( -0.163, 0.752, -0.273 ) >> >> Vector[13] = ( 0.274, -0.524, 0.806 ) >> >> Vector[14] = ( -0.123, -0.162, -0.540 ) >> >> Vector[15] = ( 0.681, 0.617, 0.395 ) >> >> Vector[16] = ( -0.581, -0.344, 0.460 ) >> >> Vector[17] = ( 0.000, 0.000, 0.000 ) >> >> Vector[18] = ( -0.131, -0.437, -0.890 ) >> >> Vector[19] = ( 0.484, -0.059, -0.309 ) >> >> Vector[20] = ( -0.029, 0.644, 0.502 ) >> >> Vector[21] = ( -0.371, -0.427, -0.113 ) >> >> Vector[22] = ( -0.402, 0.225, -0.674 ) >> >> Vector[23] = ( -0.739, 0.532, 0.413 ) >> >> Vector[24] = ( -0.238, -0.373, 0.371 ) >> >> Vector[25] = ( 0.815, -0.009, -0.055 ) >> >> Vector[26] = ( -0.127, -0.833, 0.539 ) >> >> Vector[27] = ( -0.528, 0.225, -0.066 ) >> >> Vector[28] = ( -0.336, -0.735, -0.116 ) >> >> Vector[29] = ( -0.400, -0.349, 0.848 ) >> >> Vector[30] = ( 0.833, -0.524, 0.178 ) >> >> Vector[31] = ( -0.173, 0.066, -0.547 ) >> >> Vector[32] = ( -0.535, 0.381, 0.485 ) >> >> Vector[33] = ( 0.000, 0.000, 0.000 ) >> >> Vector[34] = ( 0.016, 0.576, 0.036 ) >> >> Vector[35] = ( -0.489, -0.294, -0.821 ) >> >> Vector[36] = ( -0.053, 0.283, -0.764 ) >> >> Vector[37] = ( 0.433, 0.284, 0.256 ) >> >> Vector[38] = ( 0.211, 0.744, -0.264 ) >> >> Vector[39] = ( 0.779, 0.529, -0.337 ) >> >> Vector[40] = ( -0.501, 0.072, 0.862 ) >> >> Vector[41] = ( -0.468, 0.287, 0.178 ) >> >> Vector[42] = ( 0.231, 0.411, 0.667 ) >> >> Vector[43] = ( -0.490, 0.871, 0.046 ) >> >> Vector[44] = ( -0.087, -0.156, 0.549 ) >> >> Vector[45] = ( 0.475, -0.656, 0.102 ) >> >> Vector[46] = ( -0.238, 0.359, 0.385 ) >> >> Vector[47] = ( -0.705, 0.136, -0.389 ) >> >> Vector[48] = ( -0.424, 0.132, -0.896 ) >> >> Vector[49] = ( 0.000, 0.000, 0.000 ) >> >> Vector[50] = ( -0.968, 0.099, -0.229 ) >> >> Vector[51] = ( -0.385, -0.412, 0.124 ) >> >> Vector[52] = ( -0.582, 0.027, 0.572 ) >> >> Vector[53] = ( 0.477, -0.019, 0.325 ) >> >> Vector[54] = ( -0.291, -0.197, 0.737 ) >> >> Vector[55] = ( -0.134, -0.975, 0.180 ) >> >> Vector[56] = ( -0.340, 0.437, -0.164 ) >> >> Vector[57] = ( -0.611, -0.534, 0.091 ) >> >> Vector[58] = ( -0.029, 0.724, 0.689 ) >> >> Vector[59] = ( 0.151, 0.342, 0.439 ) >> >> Vector[60] = ( -0.323, 0.672, 0.332 ) >> >> Vector[61] = ( 0.812, 0.342, 0.473 ) >> >> Vector[62] = ( 0.451, 0.207, -0.295 ) >> >> Vector[63] = ( -0.004, 0.433, -0.901 ) >> >> Vector[64] = ( 0.617, 0.217, 0.489 ) >> >> Vector[65] = ( 0.000, 0.000, 0.000 ) >> >> Vector[66] = ( 0.044, -0.157, -0.554 ) >> >> Vector[67] = ( -0.738, 0.344, -0.061 ) >> >> Vector[68] = ( 0.324, 0.804, 0.499 ) >> >> Vector[69] = ( -0.092, 0.531, -0.207 ) >> >> Vector[70] = ( -0.292, 0.217, 0.731 ) >> >> Vector[71] = ( -0.301, 0.854, -0.425 ) >> >> Vector[72] = ( 0.560, 0.119, -0.078 ) >> >> Vector[73] = ( 0.461, 0.559, -0.376 ) >> >> Vector[74] = ( -0.709, 0.200, 0.676 ) >> >> Vector[75] = ( 0.360, 0.107, 0.439 ) >> >> Vector[76] = ( 0.252, 0.630, 0.454 ) >> >> Vector[77] = ( 0.456, 0.784, -0.421 ) >> >> Vector[78] = ( -0.122, 0.251, -0.505 ) >> >> Vector[79] = ( 0.453, -0.713, -0.535 ) >> >> Vector[80] = ( -0.384, 0.402, -0.598 ) >> >> Vector[81] = ( 0.000, 0.000, 0.000 ) >> >> Vector[82] = ( 0.141, 0.498, 0.257 ) >> >> Vector[83] = ( 0.112, 0.806, -0.066 ) >> >> Vector[84] = ( 0.889, -0.305, -0.342 ) >> >> Vector[85] = ( 0.168, 0.493, -0.249 ) >> >> Vector[86] = ( -0.251, 0.472, 0.219 ) >> >> Vector[87] = ( 0.713, 0.676, 0.185 ) >> >> Vector[88] = ( -0.235, -0.045, 0.971 ) >> >> Vector[89] = ( 0.704, -0.309, -0.275 ) >> >> Vector[90] = ( 0.212, 0.029, 0.788 ) >> >> Vector[91] = ( -0.466, 0.244, -0.237 ) >> >> Vector[92] = ( 0.740, -0.299, 0.602 ) >> >> Vector[93] = ( 0.252, -0.665, 0.402 ) >> >> Vector[94] = ( 0.386, -0.167, -0.395 ) >> >> Vector[95] = ( 0.804, 0.040, 0.138 ) >> >> Vector[96] = ( 0.462, 0.553, -0.693 ) >> >> >> >> From: [email protected] >>[mailto:[email protected]] On Behalf Of mchugh, >>robert >> Sent: Thursday, June 27, 2013 2:55 PM >> To: [email protected] >> Subject: [HCP-Users] dMRI gradient table >> >> >> >> I am looking to analyze the dMRI data but cannot find the appropriate >>gradient table. I came across 'The exact gradient table that HCP uses >>for dMRI is available for request via the HCP Data Users mailing list.' >>If you could point me in the correct direction to obtain the gradient >> table for my fiber tracking analysis I would greatly appreciate it. >> >> >> >> Thanks! >> >> >> >> Robert McHugh >> >> [email protected] >> >> _______________________________________________ >> 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 >>[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
