Convert relative 3ddose to absolute dose in 3DSlicer

TaHamI
Fri, 09 May 2025 13:37:42 +0000
Support

Hello,
I know, DOSXYZnrc like other monte-carlo simulations reports relative (normalized) dose (averaging on the number of histories, the number of histories just relates to dose uncertainty, no change the dose value).
I run DOSXYZnrc, then import the .3ddose output file into 3DSlicer and try to convert it to RT Dose. When I want to convert 3ddose to RT Dose, it takes “unit name” and “dose unit value(scaling)”. I guess, if I change the value scaling, it will change the absolute dose. But I see, when I change the value scaling, no change in absolute dose, and surprisingly, when I change the number of histories (in DOSXYZnrc simulation), I see the absolute dose changes!
Where am I doing wrong?

Operating system: windows 10 64bit
Slicer version: 5.8.1

Any help would be appreciated.

2 posts - 2 participants