Hi Vincent, The RTK format for the description of phantom is not good. What happens is that it expects one of three values (A, B or C) to be 0 so that he knows the direction of the cylinder. I would suggest to switch to Fobild's format which is now well handled by RTK in opinion. See https://web.archive.org/web/20070611224909/http://www.imp.uni-erlangen.de/forbild/deutsch/results/drasim.html >From the command line, switch to it with the --forbild flag. Simon
On Thu, Dec 14, 2023 at 11:31 AM Vincent Libertiaux <v...@xris.eu> wrote: > Hi RTK community, > > I am getting unexpected results (see attached picture) when designing a > phantom. > > Here is my text file: > > [Box] A=70 B=15 C=4 z=0, x=0, y=0, beta=0, gray=1 > [Cylinder] A=0.8 B=15 C=0.8 z=0, x=0, y=0, beta=0, gray=10 > > And the command I use for drawing: > > rtkdrawgeometricphantom -o phantom.mha --phantomfile test.txt --spacing > 0.139 --dimension 1000 > > I am expecting a cylinder across my box, but as you can see on the > attachment, the cylinder's radius decreases along its axis. > > Could someone please give me a clue on what I am doing wrong ? > > Many thanks, > > Vincent > _______________________________________________ > Rtk-users mailing list > rtk-us...@openrtk.org > https://www.creatis.insa-lyon.fr/mailman/listinfo/rtk-users >
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