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Efficient three-dimensional model-based reconstruction scheme for arbitrary optoacoustic acquisition geometries.

IEEE Trans. Med. Imaging 36, 1858-1867 (2017)
DOI
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Optimal optoacoustic tomographic sampling is often hindered by the frequency-dependent directivity of ultrasound sensors, which can only be accounted for with an accurate three-dimensional (3D) model. Herein, we introduce a 3D modelbased reconstruction method applicable to optoacoustic imaging systems employing detection elements with arbitrary size and shape. The computational complexity and memory requirements are mitigated by introducing an efficient graphics processing unit (GPU)-based implementation of the iterative inversion. On-the-fly calculation of the entries of the model-matrix via a small look-up table avoids otherwise unfeasible storage of matrices typically occupying more than 300GB of memory. Superior imaging performance of the suggested method with respect to standard optoacoustic image reconstruction methods is first validated quantitatively using tissue-mimicking phantoms. Significant improvements in the spatial resolution, contrast to noise ratio and overall 3D image quality are also reported in real tissues by imaging the finger of a healthy volunteer with a hand-held volumetric optoacoustic imaging system.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Optoacoustic Tomography ; Photoacoustic Tomography ; Model-based Inversion ; Volumetric Imaging; Photoacoustic Tomography; Inversion; Microscopy; Algorithm
ISSN (print) / ISBN 0278-0062
e-ISSN 1558-254X
Quellenangaben Band: 36, Heft: 9, Seiten: 1858-1867 Artikelnummer: , Supplement: ,
Verlag Institute of Electrical and Electronics Engineers (IEEE)
Verlagsort New York, NY [u.a.]
Begutachtungsstatus Peer reviewed