Skip to Main content Skip to Navigation
Journal articles

Projection-based dynamic tomography

Abstract : This paper proposes a 4D dynamic tomography framework that allows a moving sample to be imaged in a tomograph as well as the associated spacetime kinematics to be measured with nothing more than a single conventional x-ray scan. The method exploits the consistency of the projection/reconstruction operations through a multi-scale procedure. The procedure is composed of two main parts solved alternatively: a motion-compensated reconstruction algorithm and a projectionbased measurement procedure that estimates the displacement field directly on each individual projection. The method is applied to two studies: a numerical simulation of breathing from chest computed tomography (4D-CT) and a clinical cone beam CT of a breathing patient acquired for image-guidance of radiotherapy. The reconstructed volume, initially blurred by the motion, is cleaned from motion artifacts. It results in an improved reconstruction quality showing sharper edges and finer details.
Complete list of metadata
Contributor : Clément Jailin Connect in order to contact the contributor
Submitted on : Thursday, October 21, 2021 - 5:52:36 PM
Last modification on : Tuesday, January 4, 2022 - 6:42:44 AM


Files produced by the author(s)



Clément Jailin, Stéphane Roux, David Sarrut, Simon Rit. Projection-based dynamic tomography. Physics in Medicine and Biology, IOP Publishing, 2021, 66, pp.215018. ⟨10.1088/1361-6560/ac309e⟩. ⟨hal-03391945⟩



Les métriques sont temporairement indisponibles