Theoretical variance analysis of single-and dual-energy computed tomography methods for calculating proton stopping power ratios of biological tissues
M Yang, G Virshup, J Clayton, XR Zhu… - Physics in Medicine …, 2010 - iopscience.iop.org
We discovered an empirical relationship between the logarithm of mean excitation energy
(ln I m) and the effective atomic number (EAN) of human tissues, which allows for computing …
(ln I m) and the effective atomic number (EAN) of human tissues, which allows for computing …
On the molecular relationship between Hounsfield Unit (HU), mass density, and electron density in computed tomography (CT)
A Sudhyadhom - PLoS One, 2020 - journals.plos.org
Accurate determination of physical/mass and electron densities are critical to accurate
spatial and dosimetric delivery of radiotherapy for photon and charged particles. In this …
spatial and dosimetric delivery of radiotherapy for photon and charged particles. In this …
Generation of synthetic megavoltage CT for MRI‐only radiotherapy treatment planning using a 3D deep convolutional neural network
Background Megavoltage computed tomography (MVCT) has been implemented on many
radiotherapy treatment machines for on‐board anatomical visualization, localization, and …
radiotherapy treatment machines for on‐board anatomical visualization, localization, and …
Calibration of CT Hounsfield units for proton therapy treatment planning: use of kilovoltage and megavoltage images and comparison of parameterized methods
L De Marzi, C Lesven, R Ferrand, J Sage… - Physics in Medicine …, 2013 - iopscience.iop.org
Proton beam range is of major concern, in particular, when images used for dose
computations are artifacted (for example in patients with surgically treated bone tumors). We …
computations are artifacted (for example in patients with surgically treated bone tumors). We …
Does kV–MV dual-energy computed tomography have an advantage in determining proton stopping power ratios in patients?
M Yang, G Virshup, J Clayton, XR Zhu… - Physics in Medicine …, 2011 - iopscience.iop.org
Conventional kilovoltage (kV) x-ray-based dual-energy CT (DECT) imaging using two
different x-ray energy spectra is sensitive to image noise and beam hardening effects. The …
different x-ray energy spectra is sensitive to image noise and beam hardening effects. The …
Construction and verification of a physical chest phantom from suitable tissue equivalent materials for computed tomography examinations
I Amini, P Akhlaghi, P Sarbakhsh - Radiation Physics and Chemistry, 2018 - Elsevier
Physical phantoms are used to optimize various imaging modalities (eg computed
tomography) in terms of X-ray image quality and absorbed dose. In this regard, this study …
tomography) in terms of X-ray image quality and absorbed dose. In this regard, this study …
Improved accuracy of relative electron density and proton stopping power ratio through CycleGAN machine learning
Objective. Kilovoltage computed tomography (kVCT) is the cornerstone of radiotherapy
treatment planning for delineating tissues and towards dose calculation. For the former …
treatment planning for delineating tissues and towards dose calculation. For the former …
Application of single-and dual-energy CT brain tissue segmentation to PET monitoring of proton therapy
The purpose of this work was to evaluate the ability of single and dual energy computed
tomography (SECT, DECT) to estimate tissue composition and density for usage in Monte …
tomography (SECT, DECT) to estimate tissue composition and density for usage in Monte …
Material elemental decomposition in dual and multi‐energy CT via a sparsity‐dictionary approach for proton stopping power ratio calculation
Purpose Accurate calculation of proton stopping power ratio (SPR) relative to water is crucial
to proton therapy treatment planning, since SPR affects prediction of beam range. Current …
to proton therapy treatment planning, since SPR affects prediction of beam range. Current …
kV–kV and kV–MV DECT based estimation of proton stopping power ratio–a simulation study
KW Li, D Fujiwara, A Haga, H Liu, LS Geng - Physica Medica, 2021 - Elsevier
Purpose: This study aims to estimate the proton stopping power ratio (SPR) by using 80–120
kV and 120 kV–6 MV dual-energy CT (DECT) in a fully simulation-based approach for …
kV and 120 kV–6 MV dual-energy CT (DECT) in a fully simulation-based approach for …