Systematic review on learning-based spectral CT

A Bousse, VSS Kandarpa, S Rit… - … on Radiation and …, 2023 - ieeexplore.ieee.org
Spectral computed tomography (CT) has recently emerged as an advanced version of
medical CT and significantly improves conventional (single-energy) CT. Spectral CT has two …

Regularization of nonlinear decomposition of spectral x‐ray projection images

N Ducros, JFPJ Abascal, B Sixou, S Rit… - Medical …, 2017 - Wiley Online Library
Purpose Exploiting the x‐ray measurements obtained in different energy bins, spectral
computed tomography (CT) has the ability to recover the 3‐D description of a patient in a …

Comparison of five one-step reconstruction algorithms for spectral CT

C Mory, B Sixou, S Si-Mohamed… - Physics in Medicine & …, 2018 - iopscience.iop.org
Over the last decade, dual-energy CT scanners have gone from prototypes to clinically
available machines, and spectral photon counting CT scanners are following. They require a …

Material decomposition in spectral CT using deep learning: a Sim2Real transfer approach

JFPJ Abascal, N Ducros, V Pronina, S Rit… - IEEE …, 2021 - ieeexplore.ieee.org
The state-of-the art for solving the nonlinear material decomposition problem in spectral
computed tomography is based on variational methods, but these are computationally slow …

Image formation in spectral computed tomography

S Rit, C Mory, PB Noël - Spectral, Photon Counting Computed …, 2020 - taylorfrancis.com
Spectral Computed Tomography (CT) aims at measuring the energy-resolved three-
dimensional (3D) distribution of the x-ray attenuation coefficients of a scanned object. It is …

Spectral angiography material decomposition using an empirical forward model and a dictionary-based regularization

K Mechlem, T Sellerer, S Ehn, D Münzel… - IEEE transactions on …, 2018 - ieeexplore.ieee.org
By resolving the energy of the incident X-ray photons, spectral X-ray imaging with photon
counting detectors offers additional material-specific information compared to conventional …

[HTML][HTML] Comparison of projection-and image-based methods for proton stopping power estimation using dual energy CT

G Vilches-Freixas, VT Taasti, LP Muren… - Physics and Imaging in …, 2017 - Elsevier
Abstract Background and Purpose Several strategies for estimating stopping power ratio
(SPR) from dual-energy CT (DECT) have been proposed to improve accuracy of proton …

Nonlinear material decomposition using a regularized iterative scheme based on the Bregman distance

JFPJ Abascal, N Ducros, F Peyrin - Inverse Problems, 2018 - iopscience.iop.org
In this paper, we address the resolution of material decomposition, which is a nonlinear
inverse problem encountered in spectral computed tomography (CT). The problem is usually …

Consistency-based auto-calibration of the spectral model in dual-energy CT.

J Lesaint, S Rit - … Conference on Image Formation in X-Ray …, 2022 - spiedigitallibrary.org
We propose a consistency-based material decomposition algorithm. The method is free from
any calibration procedure. The inverse spectral mixing model is approximated by a …

[PDF][PDF] Material Decomposition in Spectral CT using deep learning: A Sim2Real transfer approach

S RIT, PA RODESCH, T BROUSSAUD, S BUSSOD… - hal.science
The state-of-the art for solving the nonlinear material decomposition problem in spectral
computed tomography is based on variational methods, but these are computationally slow …