TOPAS-microdosimetry is an extension to the TOPAS toolkit that provides settings for common microdosimeters, scoring of lineal energy (y/dy) and a biological weight function based on microdosimetric properties.

The extension can be downloaded from here.

The extension is described in:
Zhu, H., Chen, Y., Sung, W., McNamara, A. L., Tran, L. T., Burigo, L. N., et al. (2019). The microdosimetric extension in TOPAS: development and comparison with published data. Physics in Medicine and Biology, 64(14), 145004. http://doi.org/10.1088/1361-6560/ab23a3