The evolution of image reconstruction for CT—from filtered back projection to artificial intelligence

MJ Willemink, PB Noël - European radiology, 2019 - Springer
The first CT scanners in the early 1970s already used iterative reconstruction algorithms;
however, lack of computational power prevented their clinical use. In fact, it took until 2009 …

Photon-counting x-ray detectors for CT

M Danielsson, M Persson, M Sjölin - Physics in Medicine & …, 2021 - iopscience.iop.org
The introduction of photon-counting detectors is expected to be the next major breakthrough
in clinical x-ray computed tomography (CT). During the last decade, there has been …

Photon-counting detector CT: system design and clinical applications of an emerging technology

S Leng, M Bruesewitz, S Tao, K Rajendran… - Radiographics, 2019 - pubs.rsna.org
Photon-counting detector (PCD) CT is an emerging technology that has shown tremendous
progress in the last decade. Various types of PCD CT systems have been developed to …

An introduction to photon-counting detector CT (PCD CT) for radiologists

Y Nakamura, T Higaki, S Kondo, I Kawashita… - Japanese journal of …, 2023 - Springer
The basic performance of photon-counting detector computed tomography (PCD CT) is
superior to conventional CT (energy-integrating detector CT: EID CT) because its spatial …

Artificial intelligence in image reconstruction: the change is here

R Singh, W Wu, G Wang, MK Kalra - Physica Medica, 2020 - Elsevier
Innovations in CT have been impressive among imaging and medical technologies in both
the hardware and software domain. The range and speed of CT scanning improved from the …

Joint statistical iterative material image reconstruction for spectral computed tomography using a semi-empirical forward model

K Mechlem, S Ehn, T Sellerer, E Braig… - IEEE transactions on …, 2017 - ieeexplore.ieee.org
By acquiring tomographic measurements with several distinct photon energy spectra,
spectral computed tomography (spectral CT) is able to provide additional material-specific …

Image domain dual material decomposition for dual‐energy CT using butterfly network

W Zhang, H Zhang, L Wang, X Wang, X Hu… - Medical …, 2019 - Wiley Online Library
Purpose Dual‐energy CT (DECT) has been increasingly used in imaging applications
because of its capability for material differentiation. However, material decomposition suffers …

Dual-and multi-energy CT for particle stopping-power estimation: current state, challenges and potential

M Yang, P Wohlfahrt, C Shen… - Physics in Medicine & …, 2023 - iopscience.iop.org
Range uncertainty has been a key factor preventing particle radiotherapy from reaching its
full physical potential. One of the main contributing sources is the uncertainty in estimating …

Non-convex primal-dual algorithm for image reconstruction in spectral CT

B Chen, Z Zhang, D Xia, EY Sidky, X Pan - Computerized Medical Imaging …, 2021 - Elsevier
The work seeks to develop an algorithm for image reconstruction by directly inverting the
non-linear data model in spectral CT. Using the non-linear data model, we formulate the …

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 …