[Castor-users] how to write attenuation image header file

[赵鑫]

Dear CASToR developers and users,
  I have been facing an issue with attenuation when trying to reconstruct a PET image from GATE simulation data, and my simulation item is a 200mm-diameter water cylinder. As shown in the attachment: "clinder.png", obvious attenuations can be seen in the recon image, so I need to apply attenuation correction by providing the MuMap file with the help of "-atn XXX" in castor-recon.
  I have already obtained MuMap file ("BrainPET_atn_Water-MuMap.raw" in attachment) and its header ("BrainPET_atn_Water-MuMap.mhd") from MuMapActor in GATE. submitted the header file into castor-recon using the following commands: "castor-recon -df /home/castor/workDir/Cdf/Clinder_b2b_WaterPhantom.Cdh -atn /home/castor/workDir/atn/BrainPET_atn_Water-MuMap.mhd   -opti MLEM -it 10:9 -proj joseph -conv gaussian,1.7,1.7,3::psf  -dim 630,630,40  -vox 0.3225,0.32255,0.3225   -dout /home/castor/workDir/img/waterClinder_forAttenuation -th 0"
  But errors were shown on screen, as provided in the attachment: "output.png". I guess it is because I did not offer the image header file in the correct format as CASToR required. Can anyone tell me where can I find an example of attenuation image header file, so I can write the MuMap header correctly.
Best regards
Xin Zhao



    超大附件列表            BrainPET_atn_Water-MuMap.raw  [60.6MB]
        进入下载页面  http://mail.szbl.ac.cn/alimail/openLinks/downloadMimeMetaDiskBigAttach?id=netdiskid%3Av001%3Afile%3ADzzzzzzNqZy%3BSluIbwYdFjHjlm%2B9eGXp8eKM%2F8Vujd3Z%2Bu%2BwgS1EnSjp4XdB4%2FfRJw%2BPrjsvKblrNkGSOboL3osxhRiH4K8w3GTWOsrl16NI0zGaXVgMIcWA6q41rN4Grw%3D%3D    
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