[Castor-users] Unexpected error when reconstructing CT image

[Margarete Kattau]

Dear CASToR users,

I would like to reconstruct an image simulated using GATE. I've defined a detector, a fan-beam X-ray source and a simple phantom (water disc with a bone disc inside). The phantom is rotating around its axis so I can get a CT image. I've given CASToR the cdh and cdf file (cdf and geom file attached). I have two questions:

  1.  Somehow CASToR initialises the image dimensions as (180,180,240), but they should be (240,180,0). What am I doing wrong?
  2.  At the end it says "Unknown event mode". I assume this is because of my cdf file? I wasn't sure how to format it exactly. It's too big to attach, but I am posintg the first few lines below. First column is the time, second is projection ID and the third is pixel ID and each line corresponds to one event.

0 2 31563
0 2 21542
0 2 21680
0 2 21407
0 2 21721
0 2 21630
0 2 21450
0 2 21833
0 2 21645
0 2 21428
0 2 7364

Has anyone an idea what I need to change?

Many thanks in advance!

Best wishes,
Maggie

The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, London SW7 3RP.

This e-mail message is confidential and for use by the addressee only. If the message is received by anyone other than the addressee, please return the message to the sender by replying to it and then delete the message from your computer and network.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.castor-project.org/pipermail/castor-users/attachments/20220518/50eb7afe/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: CT_PHANTOM.geom
Type: application/octet-stream
Size: 388 bytes
Desc: CT_PHANTOM.geom
URL: <http://lists.castor-project.org/pipermail/castor-users/attachments/20220518/50eb7afe/attachment-0003.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: CT_PHANTOM.cdh
Type: application/octet-stream
Size: 242 bytes
Desc: CT_PHANTOM.cdh
URL: <http://lists.castor-project.org/pipermail/castor-users/attachments/20220518/50eb7afe/attachment-0004.obj>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: error
Type: application/octet-stream
Size: 5173 bytes
Desc: error
URL: <http://lists.castor-project.org/pipermail/castor-users/attachments/20220518/50eb7afe/attachment-0005.obj>