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Hi Hussain,

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<div>From first glance, it looks like you’re missing the readout module in the digitizer. Try that out and let me know.</div>

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<div>Cheers,<br>

<div dir="ltr">Matthew</div>

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<blockquote type="cite">On Jan 26, 2020, at 6:03 AM, Khalid Hussain <khalidhussain1134@gmail.com> wrote:<br>

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<div dir="ltr">Dear Gate Users,

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<div>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.</div>

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<div>I want to see the projection of photons detected by the NaI detector.</div>

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<div>For Projection I used the following code </div>

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<div><font color="#ff9900"># D I G I T I Z E R<br>

#####<br>

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/gate/digitizer/Singles/insert adder<br>

/gate/digitizer/Singles/insert blurring<br>

/gate/digitizer/Singles/blurring/setResolution 0.10<br>

/gate/digitizer/Singles/blurring/setEnergyOfReference 140. keV<br>

/gate/digitizer/Singles/insert spblurring<br>

/gate/digitizer/Singles/spblurring/setSpresolution 2.0 mm<br>

/gate/digitizer/Singles/spblurring/verbose 0<br>

/gate/digitizer/Singles/insert thresholder<br>

/gate/digitizer/Singles/thresholder/setThreshold 126. keV<br>

/gate/digitizer/Singles/insert upholder<br>

/gate/digitizer/Singles/upholder/setUphold 154. keV<br>

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# O U T P U T<br>

#####<br>

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/gate/output/root/enable<br>

/gate/output/root/setFileName output/benchSPECT<br>

/gate/output/root/setRootSinglesAdderFlag 1<br>

/gate/output/root/setRootSinglesBlurringFlag 1 <br>

/gate/output/root/setRootSinglesSpblurringFlag 1<br>

/gate/output/root/setRootSinglesThresholderFlag 1<br>

/gate/output/root/setRootSinglesUpholderFlag 1<br>

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# P R O J E C T I O N<br>

#####<br>

/gate/output/projection/enable<br>

/gate/output/projection/setFileName output/myProjection<br>

/gate/output/projection/pixelSizeX 0.48 cm<br>

/gate/output/projection/pixelSizeY 0.48 cm<br>

#/gate/output/projection/pixelNumberX 128<br>

#/gate/output/projection/pixelNumberY 128<br>

/gate/output/projection/projectionPlane XY</font><br>

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<div dir="ltr" data-smartmail="gmail_signature">

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<div>I want to analyse the projection, and interested to calculate projection/image specification. </div>

<div dir="ltr">Please see and guide where I am wrong, thanks for your cooperation.<br>

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<div>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.</div>

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<div>Regards</div>

<div>Hussain</div>

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<div><myProjection.sin></div>

<div><myProjection.hdr></div>

<div><benchSPECT.root></div>

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