Image Quality Determination of a Novel Low Energy X-ray Detector
Abstract
The demand for adequate image quality with low radiation doses for patients has greatly increased. This is especially true in the case of position verification in radiotherapy which requires a high number of images per patient. This study presents a physical characterisation of a new clinical detector based on a thick layer of structured Thallium activated Cesium Iodide. We made a critical appraisal of its performance for the first time and determined its detective quantum efficiency (DQE) by acquiring the pre-sampling modulation transfer function and normalised noise power spectrum (NNPS). The investigation was conducted with the application of three x-ray beam qualities in compliance with the International Electrotechnical Commission (IEC 62220-1:2003) standard. The spatial resolution and NNPS results led to relatively high DQE values at all energies: DQEs (0.5) were 0.46 for 54kV, 0.52-0.56 for 74kV and 0.55-0.59 for 92kV.
Read the paper
Related studies
- Chaos and quantum thermalization
- The Dalton quantum chemistry program system
- Cord Blood Leptin and Adiponectin as Predictors of Adiposity in Children at 3 Years of Age: A Prospective Cohort Study
- Quantitative metabolomics by H-NMR and LC-MS/MS confirms altered metabolic pathways in diabetes
- Stable adiabatic quantum batteries
- A novel self-lipid antigen targets human T cells against CD1c(+) leukemias
Go deeper in Evidence Hub
Evidence Hub adds a study data sheet (design, sample size, evidence level, key numbers), an AI summary and a chat grounded in the paper's text.