STIR: software for tomographic image reconstruction release 2

K Thielemans, C Tsoumpas, S Mustafovic… - Physics in Medicine …, 2012 - iopscience.iop.org
We present a new version of STIR (Software for Tomographic Image Reconstruction), an
open source object-oriented library implemented in C++ for 3D positron emission …

Hybrid PET-MR list-mode kernelized expectation maximization reconstruction

D Deidda, NA Karakatsanis, PM Robson… - Inverse …, 2019 - iopscience.iop.org
The recently introduced kernelized expectation maximization (KEM) method has shown
promise across varied applications. These studies have demonstrated the benefits and …

Fast generation of 4D PET-MR data from real dynamic MR acquisitions

C Tsoumpas, C Buerger, AP King… - Physics in Medicine …, 2011 - iopscience.iop.org
We have implemented and evaluated a framework for simulating simultaneous dynamic PET-
MR data using the anatomic and dynamic information from real MR acquisitions. PET …

Improved UTE‐based attenuation correction for cranial PET‐MR using dynamic magnetic field monitoring

AP Aitken, D Giese, C Tsoumpas, P Schleyer… - Medical …, 2014 - Wiley Online Library
Purpose: Ultrashort echo time (UTE) MRI has been proposed as a way to produce
segmented attenuation maps for PET, as it provides contrast between bone, air, and soft …

[HTML][HTML] PET image reconstruction using physical and mathematical modelling for time of flight PET-MR scanners in the STIR library

P Wadhwa, K Thielemans, N Efthimiou, K Wangerin… - Methods, 2021 - Elsevier
This work demonstrates how computational and physical modelling of the positron emission
tomography (PET) image acquisition process for a state-of-the-art integrated PET and …

Comparative evaluation of scatter correction in 3D PET using different scatter-level approximations

I Polycarpou, K Thielemans, R Manjeshwar… - Annals of nuclear …, 2011 - Springer
Abstract Objective In 3D PET, scatter of the gamma photons is one of the most significant
physical factors which degrades not only image quality but also quantification. The currently …

PET scatter estimation using deep learning U-Net architecture

B Laurent, A Bousse, T Merlin, S Nekolla… - Physics in Medicine & …, 2023 - iopscience.iop.org
Objective. Positron emission tomography (PET) image reconstruction needs to be corrected
for scatter in order to produce quantitatively accurate images. Scatter correction is …

Implementation of cylindrical PET scanners with block detector geometry in STIR

P Khateri, J Fischer, W Lustermann, C Tsoumpas… - EJNMMI physics, 2019 - Springer
Abstract Background Software for Tomographic Image Reconstruction (STIR) is an open-
source library for PET and SPECT image reconstruction, implementing iterative …

Effect of PET-MR inconsistency in the kernel image reconstruction method

D Deidda, NA Karakatsanis, PM Robson… - IEEE transactions on …, 2018 - ieeexplore.ieee.org
Anatomically driven image reconstruction algorithms have become very popular in positron
emission tomography (PET) where they have demonstrated improved image resolution and …

A 3D MR‐acquisition scheme for nonrigid bulk motion correction in simultaneous PET‐MR

C Kolbitsch, C Prieto, C Tsoumpas… - Medical …, 2014 - Wiley Online Library
Purpose: Positron emission tomography (PET) is a highly sensitive medical imaging
technique commonly used to detect and assess tumor lesions. Magnetic resonance imaging …