Dose configuration inside DICOM EGSPHANT file using synchronized simulation (SOURCE 21) #1136
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Hello scientists |
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https://pubmed.ncbi.nlm.nih.gov/16177516/
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This is done in the ctcreate input file, see section 16.2 of the DOSXYZ user manual. You provide the CT numbers (HU values) and the material and density range that corresponds. There is a fully worked example in the table on page 121. |
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Thank you Sir, i appreciate that. One more question is related to 3ddose file. Is there any way to extract DVH from 3ddose file? |
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While some groups have coded this, they have not contributed it to EGSnrc. To do it yourself, you would need to write a script that reads an RD DICOM file and overwrites the dose values with those from the 3ddose file (after some interpolations). Then the RD DICOM file can be imported into your TPS. You can do this using python and pydicom. I think it is also possible using CERR in matlab. |
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Thank You, i will try to write it. |
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3D slicer might be able to do it: |
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per source fluenceorper source particle, so that calculated quantities stay independent of the number of histories that you simulate. Since in reality you don't know how many source particles are needed to achieve a particular dose, you can use a calibration simulation for absolute dose conversion. Note that relative comparisons are always more reliable that absolute dose conversions.https://pubmed.ncbi.nlm.nih.gov/16177516/