Mr. Thomas Carlier Profile

Thomas Carlier

Medical Physicist at Ctr Hospitalier Univ de Nantes

SPIE Involvement:

Author

Publications (2)

Proceedings Article | 15 February 2021 Presentation + Paper

Low-count PET image reconstruction with Bayesian inference over a Deep Prior

Hernan Carrillo, Maël Millardet, Thomas Carlier, Diana Mateus

Proceedings Volume 11596, 115960V (2021) https://doi.org/10.1117/12.2580169

KEYWORDS: Positron emission tomography, Image restoration, Bayesian inference, Infrared imaging, Expectation maximization algorithms, Error control coding, Stochastic processes, Optical spheres, Neural networks, Image analysis

Read Abstract +

Proceedings Article | 20 April 2005 Paper

Quality controls for gamma cameras and PET cameras: development of a free open-source ImageJ program

Thomas Carlier, Ludovic Ferrer, Jean Berruchon, Regis Cuissard, Adeline Martineau, Pierre Loonis, Olivier Couturier

Proceedings Volume 5745, (2005) https://doi.org/10.1117/12.595539

KEYWORDS: Cameras, Control systems, Positron emission tomography, Computing systems, Spatial resolution, Image quality, Nuclear medicine, Point spread functions, Standards development, Modulation transfer functions

Read Abstract +

Acquisition data and treatments for quality controls of gamma cameras and Positron Emission Tomography (PET) cameras are commonly performed with dedicated program packages, which are running only on manufactured computers and differ from each other, depending on camera company and program versions. The aim of this work was to develop a free open-source program (written in JAVA language) to analyze data for quality control of gamma cameras and PET cameras. The program is based on the free application software ImageJ and can be easily loaded on any computer operating system (OS) and thus on any type of computer in every nuclear medicine department. Based on standard parameters of quality control, this program includes 1) for gamma camera: a rotation center control (extracted from the American Association of Physics in Medicine, AAPM, norms) and two uniformity controls (extracted from the Institute of Physics and Engineering in Medicine, IPEM, and National Electronic Manufacturers Association, NEMA, norms). 2) For PET systems, three quality controls recently defined by the French Medical Physicist Society (SFPM), i.e. spatial resolution and uniformity in a reconstructed slice and scatter fraction, are included. The determination of spatial resolution (thanks to the Point Spread Function, PSF, acquisition) allows to compute the Modulation Transfer Function (MTF) in both modalities of cameras. All the control functions are included in a tool box which is a free ImageJ plugin and could be soon downloaded from Internet. Besides, this program offers the possibility to save on HTML format the uniformity quality control results and a warning can be set to automatically inform users in case of abnormal results. The architecture of the program allows users to easily add any other specific quality control program. Finally, this toolkit is an easy and robust tool to perform quality control on gamma cameras and PET cameras based on standard computation parameters, is free, run on any type of computer and will soon be downloadable from the net (http://rsb.info.nih.gov/ij/plugins or http://nucleartoolkit.free.fr).

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years