Dear FLUKA and Flair experts, I’m trying to import a DICOM file by using flair. The range of its HU value is about -1000 ~ 2300. And it finished OK when I was simulating a proton beam penetrating the DICOM. However, when I multiplied the HU values of the DICOM file by a factor of 10, namely chan…

Hi @kwlibuaa your CT_10_times file contains only values 2 blocks of data from -32768 … -29691 and 32536 … 32767 which do not seem correct (look the histogram below) [image] while the CT_5_times seems more logical from -5000 … 8070 [image] there was something wrong in your manipulation

Hi @kwlibuaa I could imagine several reasons that it might lead to errors. However to properly debug it we would need the input files, dicom, voxel etc… so we can replicate the crash.

Dear Vasilis, Thanks for your reply. Attached is the file with two DICOM slices. The HU values in CT_5_times.dcm were multiplied by a factor of 5, which worked well. The HU values in CT_10_times.dcm were multiplied by a factor of 10, which did not work. Please import the two .dcm files separate…

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The range limitation of HU values when importing a DICOM file

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