<html dir="ltr">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style id="owaParaStyle" type="text/css">P {margin-top:0;margin-bottom:0;}</style>
</head>
<body ocsi="0" fpstyle="1">
<div style="direction: ltr; font-family: Tahoma; color: rgb(0, 0, 0); font-size: 13px;">
<div style="">I installed MRtrix v0.2.9 on my virtual machine that uses Windows XP. When I try to overlay an image with tracks generated using streamtrack an error occurs which closes MRview.<br>
<br>
I generated the spherical harmonic representation of the DWI using dwi2SH. The original images had 50 directions with b 1000 and 6 b 0 images. Two sets of these made 112 original images per subject.<br>
<br>
The command I used for generating the tracts was:<br>
streamtrack -seed WM_mask.nii -mask brain_mask.nii SD_PROB dwi_image.nii tracks.tck<br>
I pasted the output from track_info below.<br>
<br>
I want to try TDI using these images.<br>
<br>
Thanks, Keith<br>
<br>
<br>
Microsoft Windows XP [Version 5.1.2600]<br>
<br>
Y:\MRtrix>track_info -info tracks.tck<br>
track_info [INFO]: WARNING: malformed key/value entry ("max_num_attempts:") in f<br>
ile "tracks.tck" - ignored<br>
track_info [INFO]: error parsing spherical ROI specification "Y:\MRtrix\WM_mask.<br>
nii" - assuming mask image<br>
track_info [INFO]: error parsing spherical ROI specification "Y:\MRtrix\dti2cEC_<br>
brain_mask.nii" - assuming mask image<br>
***********************************<br>
Tracks file: "tracks.tck"<br>
count: 10000<br>
init_threshold: 0.2<br>
lmax: 12<br>
max_dist: 200<br>
max_num_tracks: 10000<br>
max_trials: 50<br>
method: SD_PROB<br>
min_curv: 1<br>
min_dist: 10<br>
no_mask_interp: 0<br>
sh_precomputed: 1<br>
source: Y:\MRtrix\SH.nii<br>
step_size: 0.2<br>
stop_when_included: 0<br>
threshold: 0.1<br>
total_count: 11067<br>
unidirectional: 0<br>
ROI: seed Y:\MRtrix\WM_mask.nii<br>
ROI: mask Y:\MRtrix\dti2cEC_brain_mask.nii<br>
<br>
</div>
</div>
<br>
<hr>
<font face="Arial" color="Blue" size="2"><br>
UT Southwestern Medical Center<br>
The future of medicine, today.<br>
</font>
</body>
</html>