Multigrid-based reconstruction algorithm for quantitative photoacoustic tomography

Shengfu Li (1, 2) , Bruno Montcel (3) , Zhen Yuan (4) , Wanyu Liu (1) , Didier Vray (5)

1 HIT-INSA - Sino French Research Center for Biomedical Imaging
2 CREATIS - Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé
3 RMN et optique : De la mesure au biomarqueur
4 Bioimaging Core, Faculty of Health Sciences
5 Imagerie Ultrasonore

This paper proposes a multigrid inversion framework for quantitative photoacoustic tomography reconstruction. The forward model of optical fluence distribution and the inverse problem are solved at multiple resolutions. A fixed-point iteration scheme is formulated for each resolution and used as a cost function. The simulated and experimental results for quantitative photoacoustic tomography reconstruction show that the proposed multigrid inversion can dramatically reduce the required number of iterations for the optimization process without loss of reliability in the results.

Domaines: Acoustique [physics.class-ph]; Traitement du signal et de l'image [eess.SP]

Shengfu Li, Bruno Montcel, Zhen Yuan, Wanyu Liu, Didier Vray. Multigrid-based reconstruction algorithm for quantitative photoacoustic tomography. Biomedical optics express, 2015, 6 (7), pp.2424-2434. ⟨10.1364/BOE.6.002424⟩. ⟨hal-01179827⟩