A multiresolution image reconstruction method in X-ray microCT

Marius Costin (1) , Delphine Lazaro-Ponthus (2) , Samuel Legoupil (1) , Valerie Kaftandjian (3)

1 DISC - Département Imagerie et Simulation pour le Contrôle
2 LM2S - Laboratoire Modélisation et Simulation de Systèmes
3 LVA - Laboratoire Vibrations Acoustique

We propose a method for multiresolution image reconstruction in X-ray micro computed tomography (microCT). It can have a variety of applications, from material characterization to small animal imaging studies. The main idea is to recover an overall image of the sample with a coarse resolution, and with a fine resolution for a region-of-interest (ROI). In a zoo-min CT type setup, two sets of data are used, taken at different magnifications ratios. They are combined with the help of an analytical relation and the reconstruction is an extension of the filtered back-projection (FBP) algorithm. We present results with simulated data, some performance aspects and a simple noise analysis.

Keywords: medical image processing; Medical imaging; computerised tomography; Computed tomography; X-ray tomography; tomography; image reconstruction; filtered back projection; multiresolution image reconstruction; X-ray micro-CT; micro-CT; CT imaging; X-ray micro computed tomography; signal processing; image processing; coarse image resolution; magnification ratio; Pixel; Variable speed drives; Spatial resolution; Noise; multiresolution

Domains: Signal and Image Processing; Imaging; Medical Physics [physics.med-ph]; Nuclear Experiment [nucl-ex]

Marius Costin, Delphine Lazaro-Ponthus, Samuel Legoupil, Valerie Kaftandjian. A multiresolution image reconstruction method in X-ray microCT. 2009 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC 2009), Oct 2009, Orlando, United States. pp.3871-3876, ⟨10.1109/NSSMIC.2009.5401919⟩. ⟨cea-02544394⟩