ESTRO 2024 - Abstract Book

S3328

Physics - Detectors, dose measurement and phantoms

ESTRO 2024

keV/μm (R80) and 4.5 keV/μm (R50). For the carbon ion beam (95 MeV/A), LET values from 22.0 keV/μm (entrance) to 48.8 keV/μm (distal) were obeserved.

Figure 1 - Depth dose profiles for pristine (a) and SOBP (b) proton and carbon ion (c) irradiations. Images d and e show histograms that ilustrate the increase of LET for each postion indicated in the respective depth-dose profile (a and b) with the mean value indicated. For the carbon ion irradiation, the lineal energy spectra also shows the increase in LET at different positions.

Conclusion:

Combining the response from different detectors increased the number of viable experimental scenarios and allowed the identification of more events. However, the current technology and high-sensitivity of such devices restricts their use in clinical practice, as a substantial decrease in proton fluence is required and electronic noise plays an important