# ImageCT reconstruction :: Castor

**URL:** <https://castor-project.discourse.group/t/imagect-reconstruction-castor/213>\
**Category:** General Discussions\
**Created:** [April 26, 2021, 11:57am UTC](https://castor-project.discourse.group/t/imagect-reconstruction-castor/213 "2021-04-26T11:57:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ABDEL\_KHALLOUKI](https://avatars.discourse-cdn.com/v4/letter/a/6de8d8/32.png) [@ABDEL\_KHALLOUKI](https://castor-project.discourse.group/u/ABDEL_KHALLOUKI)\
**Post date:** [April 26, 2021, 11:57am UTC](https://castor-project.discourse.group/t/imagect-reconstruction-castor/213/1 "2021-04-26T11:57:43Z")

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Hi,  
I’m a PHD student who is doing an assignment of CT simulation with Gate. I’ve done every step introduced in the Gate users’ guide except the final step of data processing because I have got some problems on it. My goal of processing data is to obtain an image of the cross section of the phantom. I have tried 3 types of output: ASCII, ROOT and ImageCT .

Plz How I can use castor for obtain image  
??

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**Author:** ![tmerlin](https://yyz2.discourse-cdn.com/free1/user_avatar/castor-project.discourse.group/tmerlin/32/216_2.png) [@tmerlin](https://castor-project.discourse.group/u/tmerlin)\
**Post date:** [April 28, 2021, 4:35pm UTC](https://castor-project.discourse.group/t/imagect-reconstruction-castor/213/2 "2021-04-28T16:35:36Z")

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Hi Abdel,

Castor’s conversion tools are only available for cylindrical PET / SPECT Gate systems.

The conversion of CT data/geometry would have to be done manually following the format describe in the documentation, sections 5.3 and 6.3: [http://www.castor-project.org/sites/default/files/2020-09/CASToR\_general\_documentation.pdf](http://www.castor-project.org/sites/default/files/2020-09/CASToR_general_documentation.pdf) .

Best,  
Thibaut