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dicom

How to calculate Dose-Length Product (DLP) value?

I'm looking for a DICOM Tag for Dose-Length Product (DLP) Value. If there is no such a tag, how to calculate it based on other tags?

Maybe it is a calculation between (0018,1302) Scan Length and (0018,0050) Slice Thinkness and some others but I am not sure.

DLP = Dose-Length Product [mGy x cm]

Solution

  • I don't believe that there is a standard DICOM tag for DLP. I know it exists as a value in RDSR (Radiation Dose Structured Reports.) You could, however, calculate DLP from CTDIvol and Scan Length, assuming that you have both of those available in the header.

    DLP = CTDIvol * ScanLength