A5076509777- Advanced Radiotherapy Techniques
- Radiation Therapy and Dosimetry
- Radiation Detection and Scintillator Technologies
- Radioactive Decay and Measurement Techniques
- Effects of Radiation Exposure
University of Canterbury
2019-2023
Christchurch Hospital
2019-2023
Digital holographic interferometry (DHI) radiation dosimetry has been proposed as an experimental metrology technique for measuring absorbed doses to water with high spatial resolution via noninvasive optical calorimetry. The process involves digitally recording consecutive interference patterns resulting from variations in the refractive index a function of radiation-absorbed dose. Experiments conducted on prototype systems revealed approach be feasible but strongly dependent...
Optical Calorimetry (OC) is a 2D Digital Holographic Interferometry (DHI)-based measurement technique with potential applications for the 3D dosimetry of ultra-high dose rate (FLASH) radiation therapy beams through tomographic reconstruction. This application requires accurate measurements DHI signals in environments low signal-to-noise ratios (SNRs) order to accurately measure absorbed energy medium per unit mass (Dose). However, reconstruction accuracy sensitive noise measurements. In this...
Abstract PURPOSE Optical Calorimetry (OC) is based on interferometry and provides a direct measurement of spatially resolved absorbed dose to water by measuring refractive index changes induced radiation. The purpose this work was optimize characterize in software an OC system tailored for ultra-high rate applications build test prototype clinical environment. METHODS A radiation dosimeter using the principles designed optical modelling software. Traditional image quality instruments,...