[Gate-users] Any Examples of GATE reconstruction of SPECT system projection files (.hdr and .sin) using STIR

[강한규]

Dear Kurt V,
 
Attached is the GATEv6.2 macro files for small animal SPECT.(slide#27-29)
 
In my GATE simulation, there is no attenuation material.Thus, the phantom material is Air.
====================================================================
Tungsten Parallel Square Hole Collimator
L=30 mm
H=1.0 mm, 0.8 mm, 0.6 mm, 0.4 mm
S=0.12 mm, 0.1 mm

Ultra-Micro Hot Phantom (Source)
99mTc activity = 300 [kBq/mL]
OD=28 mm
Height = 10 mm
====================================================================

You can run the below main macro file for small animal SPECT simulation.
Main_SPECT_Small_Animal_H9500PMT_GAGG_Continuous_YZ_plane_Tungsten_L30mm_H1p0mm_S0p10mm_Micro_Deluxe_Hot_300kBq_mL_Acq12800sec_Proj128views_360deg_2016_10_18_KangHG.mac 
 
 
For the STIR image reconstruction with STIR, you can use my parameter file attached in this email.
-OSMAPOSL_osem_SPECT_UltraMicro_Hot.par (Parameter file)
-SPECT_Interfile_header_UltraMicro_Hot.hs (Interfile)
 
You can find the basic description about the parameter files of STIR on the attached PDF file.(slide#11-18)
 
Hopefully, my GATE macro files and parameter file of STIR would be useful for your work.
 
Best regards,
 
Han Gyu Kang, Ph.D.
 
Imaging Physics Group, NIRS-QST
-----Original Message-----
From: "Kurt V"<kurtv1 at hotmail.com>
To: "gate-users at lists.opengatecollaboration.org"<gate-users at lists.opengatecollaboration.org>;
Cc:
Sent: 2019-08-11 (일) 03:43:49 (GMT+09:00)
Subject: [Gate-users] Any Examples of GATE reconstruction of SPECT system projection files (.hdr and .sin) using STIR
 
Dear GATE Users,

I have been working to reconstruct a SPECT based detection system in STIR by inputting the projection .sin and .hdr output files directly into stir and reconstructing the image.
 
There have been some very good presentations on how to perform this task, namely, the 2018 IEEE NSS/MIC talk by Han Gyu Kang 'Image reconstruction of GATE SPECT simulation using STIR'.
 
Following his methods, i am finding that my reconstructed images are always of low quality and are of point source geometry. I cannot reconstruct any decent images of an actual source geometry (volume source cylinder).
 
I was wondering, if anyone who has experience with this task would be willing to provide example files of: the GATE macro file, STIR spect interfile and the .hv and .v output files from the reconstruction.
 
I have tried many different designs/reconstructions and have not had much luck.
 
If anyone has any experience with reconstruction of GATE output in STIR, i was wondering if they could please provide suggestions.
 
 
 
As always thanks all and i appreciate all help,
Kurt Van Delinder, M.Sc, M.Sc, RT(T)
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opengatecollaboration.org/pipermail/gate-users/attachments/20190816/95d7b345/attachment.html>