I have made this change and released version v1.0.3 of gradunwarp with
this fix.
Thanks,
Tim
On 10/17/2016 11:21 AM, Keith Jamison wrote:
That is the correct fix for this problem. It has no side-effects.
Some scanners (eg: Siemens 7T) have coefficients of even higher
orders, so you can actually increase the siemens_cas to 100 or so to
accommodate the full range. That value just determines the
preallocation, and the matrix is trimmed down to the maximum
appropriate size after reading the file.
I think this is going to be fixed in the next release of gradunwarp
(though when that will be...?)
-Keith
On Sat, Oct 15, 2016 at 1:14 PM, Antonin Skoch <a...@ikem.cz
<mailto:a...@ikem.cz>> wrote:
Dear experts,
I have an issue with processing my data (acquired at Siemens
Prisma 3T) by gradunwarp v1.0.2, downloaded from
https://github.com/Washington-University/gradunwarp/releases
<https://github.com/Washington-University/gradunwarp/releases>
It crashed with my coef.grad file by producing "array index out of
bounds" error in coef_file_parse routine.
I managed to get it working by increasing siemens_cas=20 in
core/globals.py
The corrected images look reasonable, with deformation going to
maximum approx 1-2 mm in off-isocenter regions.
Since I am not familiar with internals of gradunwarp, I would like
to assure myself the routine with my modification works OK and
there is no other unwanted consequence by increasing siemens_cas.
Could you please comment on?
Regards,
Antonin Skoch
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