[Gate-users] Problem in Projection calculation in simulating SPECT/Gamma Camera

[Khalid Hussain]

Dear Matthew,

Thank you for your reply.
I added the readout module which I missed previously, but still the
situation seems to be same.
# D I G I T I Z E R
/gate/digitizer/Singles/insert adder
/gate/digitizer/Singles/insert readout
/gate/digitizer/Singles/insert blurring
/gate/digitizer/Singles/blurring/setResolution 0.10
/gate/digitizer/Singles/blurring/setEnergyOfReference 140. keV
/gate/digitizer/Singles/insert spblurring
/gate/digitizer/Singles/spblurring/setSpresolution 2.0 mm
/gate/digitizer/Singles/spblurring/verbose 0
/gate/digitizer/Singles/insert thresholder
/gate/digitizer/Singles/thresholder/setThreshold 126. keV
/gate/digitizer/Singles/insert upholder
/gate/digitizer/Singles/upholder/setUphold 154. keV

# O U T P U T
/gate/output/root/enable
/gate/output/root/setFileName output/benchSPECT
/gate/output/root/setRootSinglesAdderFlag 1
/gate/output/root/setRootSinglesBlurringFlag 1
/gate/output/root/setRootSinglesSpblurringFlag 1
/gate/output/root/setRootSinglesThresholderFlag 1
/gate/output/root/setRootSinglesUpholderFlag 1

# P R O J E C T I O N
/gate/output/projection/enable
/gate/output/projection/setFileName output/myProjection
/gate/output/projection/pixelSizeX 0.48 cm
/gate/output/projection/pixelSizeY 0.48 cm
/gate/output/projection/pixelNumberX 59
/gate/output/projection/pixelNumberY 44
/gate/output/projection/projectionPlane XY
 The projection image is still black, no source image is reflected.
[image: image.png]

Further more, still I cannot see any information in .root file hit and
single and others.

Please guide?

Thank you
Regards
Hussain


On Mon, Jan 27, 2020 at 12:35 AM Matthew Strugari <matthew.strugari at dal.ca>
wrote:

> Hi Hussain,
>
> From first glance, it looks like you’re missing the readout module in the
> digitizer. Try that out and let me know.
>
> Cheers,
> Matthew
>
> On Jan 26, 2020, at 6:03 AM, Khalid Hussain <khalidhussain1134 at gmail.com>
> wrote:
>
> 
> Dear Gate Users,
>
> I am simulating dual head Gamma Camera with sphere source of volume 1 cm^3
> (0.62 cm radius) in the center. I am using the Tc-99m as a source of
> radioactivity with activity 100 kBq.
>
> I want to see the projection of photons detected by the NaI detector.
>
> For Projection I used the following code
>
> # D I G I T I Z E R
> #####
>
> /gate/digitizer/Singles/insert adder
> /gate/digitizer/Singles/insert blurring
> /gate/digitizer/Singles/blurring/setResolution 0.10
> /gate/digitizer/Singles/blurring/setEnergyOfReference 140. keV
> /gate/digitizer/Singles/insert spblurring
> /gate/digitizer/Singles/spblurring/setSpresolution 2.0 mm
> /gate/digitizer/Singles/spblurring/verbose 0
> /gate/digitizer/Singles/insert thresholder
> /gate/digitizer/Singles/thresholder/setThreshold 126. keV
> /gate/digitizer/Singles/insert upholder
> /gate/digitizer/Singles/upholder/setUphold 154. keV
>
>
>
> # O U T P U T
> #####
>
> /gate/output/root/enable
> /gate/output/root/setFileName output/benchSPECT
> /gate/output/root/setRootSinglesAdderFlag 1
> /gate/output/root/setRootSinglesBlurringFlag 1
> /gate/output/root/setRootSinglesSpblurringFlag 1
> /gate/output/root/setRootSinglesThresholderFlag 1
> /gate/output/root/setRootSinglesUpholderFlag 1
>
> # P R O J E C T I O N
> #####
> /gate/output/projection/enable
> /gate/output/projection/setFileName output/myProjection
> /gate/output/projection/pixelSizeX 0.48 cm
> /gate/output/projection/pixelSizeY 0.48 cm
> #/gate/output/projection/pixelNumberX 128
> #/gate/output/projection/pixelNumberY 128
> /gate/output/projection/projectionPlane XY
>
> I want to analyse the projection, and interested to calculate
> projection/image specification.
> Please see and guide where I am wrong, thanks for your cooperation.
>
> I viewed the projection.sin file in imagej, it has no information also the
> hits and singles have no as such useful information. Files are attached.
> Regards
> Hussain
> <myProjection.sin>
> <myProjection.hdr>
> <benchSPECT.root>
> _______________________________________________
> Gate-users mailing list
> Gate-users at lists.opengatecollaboration.org
> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.opengatecollaboration.org/pipermail/gate-users/attachments/20200127/3b6d5ac4/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image.png
Type: image/png
Size: 28721 bytes
Desc: not available
URL: <http://lists.opengatecollaboration.org/pipermail/gate-users/attachments/20200127/3b6d5ac4/attachment-0001.png>