Author profile
Department of Medical Physics, School of Medicine and Public Health, University of Wisconsin - Madison
Ultra-high dose rate (UHDR) beams (40Gy/s) compromise the accuracy of conventional reference ion chambers (ICs) due to saturation effects. The Exradin A30 is an ultra-thin parallel-plate IC featuring a 0.3 mm nominal electrode spacing to enhance the charge co...
Half-value layer (HVL) is a common beam quality parameter, but physical measurement is often time-consuming and difficult. This work presents a faster spectral method for determining HVL for four sets of polyenergetic mammography beam qualities using a solid-...
To experimentally quantify the mechanical delivery errors of a pre-clinical Dynamical Collimation System (DCS) prototype for intensity modulated proton therapy (IMPT) and evaluate the dosimetric impact of these errors to the target coverage and organ sparing.
Accurate absorbed dose estimation is essential for radiotherapy and research. In ultra-high dose-rate (FLASH) beams, ~Gy doses are delivered in a few pulses, so small perturbations can bias monitoring. Beam current transformers (BCTs) are widely used for FLAS...
Cherenkov imaging enables real-time visualization of radiation delivery by capturing Cherenkov emission from patient tissue at the beam location. Although this signal can be compared to the expected dose distribution, no established method currently exists to...
Accurate small‑field dosimetry on MR‑linacs remains challenging due to magnetic‑field–induced dose perturbations and steep dose gradients. In this study, the performance of a newly developed unshielded silicon diode has been evaluated for use in small-field d...
Cherenkov imaging offers real-time visualization and verification of external beam delivery during radiation therapy. However, the relationship between beam parameters and Cherenkov photon yield per unit dose remains underexplored, especially for small-fields...
FLASH radiotherapy reduces skin damage in vivo from ultra-high dose rate (UHDR) irradiation relative to conventional dose rates (CDR), while preserving tumor tissue damage. The macroscopic FLASH tissue sparing effect has not yet been robustly reproduced in la...
Therapy Physics
Therapy Physics