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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hi Elizabeth,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>There could be some bug. I must admit that
we haven’t rigorously tested the AIR-realigned table. In general if
tensor calculation crushes after successful loading, following should be
considered.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'><span style='mso-list:Ignore'>1)<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>memory issue: Please try partial slice calculation (e.g. calculate
only slice 1-20 instead of all slices).<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'><span style='mso-list:Ignore'>2)<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Gradient table issue: Please load the data once, make sure that all
images are loaded, close the window, and do “DTI Mapping” again. In
the data input window, inspect the b-table, which is remember from the previous
processing. If there is any mistake in the syntax, you can see how DtiStudio
interpreted the table.<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'><span style='mso-list:Ignore'>3)<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'> </span></font></span></span></font><![endif]><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Also try no auto rejection and see if it works. Auto rejection is
still a beta version.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Please let us know the results of these
tests.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Susumu<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
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<hr size=2 width="100%" align=center tabindex=-1>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
mristudio-users-bounces@mristudio.org
[mailto:mristudio-users-bounces@mristudio.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>[Seongjin]<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, July 09, 2008
4:40 PM<br>
<b><span style='font-weight:bold'>To:</span></b> DTI Studio, ROI Editor,
Landmarker Questions/Support<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Mristudio-users]
error when calculating tensor with double gradient table</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>Dear Elizabeth,<br>
<br>
What vendor is this table for?<br>
<br>
Best,<br>
<br>
Seongjin Choi<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>On Wed, Jul 9, 2008 at 3:39 PM, Elizabeth Finger <<a
href="mailto:Elizabeth.Finger@lhsc.on.ca">Elizabeth.Finger@lhsc.on.ca</a>>
wrote:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hello-<br>
<br>
I have running into an error- the DTI Mapping program is crashing out, when
attempting to do a tensor calculation with an updated gradient table from the
AIR Matrix calcuation that uses two series. We have two separate series
with 3 b0 images and 33 graidents with the same DTI parameters per subject. We
have used AIR to align them together, and generated an updated gradient table.
When we reload the two AIR series into the DTI Mapping window with the new
gradient table from AIRMatrix output (table pasted below, now with 72 lines,
starting w/ 0 and ending w/ 71), the data load correctly. However, when we
attempt to run the tensor calculation with automatic outlier rejection, as soon
as the calculation starts the program crashes out. If we use the original
gradient table there is no problem. Also, if we use half of the updated
gradient tables (either first half w/ numbers from 0 to 35, or the second half
w/ original airmatrix numbers from 36-71, the tensor calculation works. Is
there something else we can do to use the revised gradient table for both
series and include both series in the tensor calculation?<br>
<br>
Thank you,<br>
Elizabeth Finger<br>
<br>
*** New Gradient Table ***<br>
0: 0.000000, 0.000000, 0.000000<br>
1: 0.000000, 0.000000, 0.000000<br>
2: 0.000000, 0.000000, 0.000000<br>
3: 0.999999, 0.000434, -0.000390<br>
4: 0.313706, 0.949767, -0.000230<br>
5: -0.072833, 0.636259, 0.767252<br>
6: 0.875411, -0.479757, 0.061399<br>
7: -0.199675, -0.555806, 0.809540<br>
8: -0.615266, -0.363411, 0.700719<br>
9: 0.684460, 0.371145, 0.627016<br>
10: -0.565897, 0.821968, 0.063204<br>
11: 0.901326, 0.406546, 0.148179<br>
12: 0.093208, -0.995034, -0.035177<br>
13: 0.144608, -0.895242, -0.421890<br>
14: 0.524194, -0.680821, -0.509454<br>
15: -0.481128, -0.733741, 0.480656<br>
16: -0.823076, 0.449965, 0.347979<br>
17: -0.888253, -0.063133, -0.455690<br>
18: -0.672102, -0.732741, 0.110781<br>
19: 0.699453, -0.110723, -0.705987<br>
20: 0.441389, -0.391523, -0.806244<br>
21: -0.281831, -0.814184, -0.507885<br>
22: -0.601632, -0.812283, -0.508305<br>
23: 0.629421, 0.708171, 0.317496<br>
24: -0.568210, 0.273148, -0.778529<br>
25: 0.829784, -0.324714, 0.454091<br>
26: 0.313490, 0.491775, 0.811144<br>
27: 0.054139, -0.216170, -0.975053<br>
28: 0.286972, -0.904461, 0.315101<br>
29: 0.923529, -0.021970, -0.383806<br>
30: 0.264165, -0.607207, 0.749858<br>
31: 0.260233, -0.609104, 0.749834<br>
32: 0.854475, 0.400779, -0.330854<br>
33: -0.097884, 0.220989, -0.970907<br>
34: -0.349784, -0.104215, 0.931861<br>
35: -0.426056, -0.091100, -0.900897<br>
36: 0.000000, 0.000000, 0.000000<br>
37: 0.000000, 0.000000, 0.000000<br>
38: 0.000000, 0.000000, 0.000000<br>
39: 0.999991, -0.004224, -0.000249<br>
40: 0.314415, 0.949532, -0.000519<br>
41: -0.075562, 0.638964, 0.766869<br>
42: 0.875203, -0.479650, 0.061976<br>
43: -0.199274, -0.552859, 0.809863<br>
44: -0.614361, -0.360801, 0.701046<br>
45: 0.685615, 0.369276, 0.626992<br>
46: -0.559605, 0.826597, 0.062539<br>
47: 0.904448, 0.399873, 0.148048<br>
48: 0.093181, -0.995075, -0.035007<br>
49: 0.144334, -0.895057, -0.421964<br>
50: 0.519135, -0.685870, -0.509212<br>
51: -0.481587, -0.732226, 0.480938<br>
52: -0.823207, 0.450559, 0.347815<br>
53: -0.886639, -0.063294, -0.456166<br>
54: -0.676109, -0.728467, 0.111361<br>
55: 0.700883, -0.109309, -0.705804<br>
56: 0.444573, -0.392454, -0.805908<br>
57: -0.280834, -0.812282, -0.508434<br>
58: -0.601365, -0.814664, -0.507772<br>
59: 0.629210, 0.711182, 0.316532<br>
60: -0.566986, 0.272640, -0.778692<br>
61: 0.830525, -0.326559, 0.453683<br>
62: 0.315200, 0.490945, 0.811119<br>
63: 0.054672, -0.213494, -0.975138<br>
64: 0.284283, -0.905688, 0.314935<br>
65: 0.923751, -0.020852, -0.383734<br>
66: 0.259252, -0.608233, 0.749993<br>
67: 0.259508, -0.605161, 0.750359<br>
68: 0.854059, 0.401502, -0.330884<br>
69: -0.095633, 0.224934, -0.970803<br>
70: -0.349293, -0.104589, 0.931882<br>
71: -0.423139, -0.088227, -0.901151<br>
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