Model-based optoacoustic image reconstruction of large three-dimensional tomographic datasets acquired with an array of directional detectors
Caballero MAA, Gateau J, Dean-Ben XL, Ntziachristos V (2014)
Publication Type: Journal article
Publication year: 2014
Journal
Book Volume: 33
Pages Range: 433-443
Article Number: 6636031
Journal Issue: 2
Abstract
Image quality in 3-D optoacoustic (photoacoustic) tomography is greatly influenced by both themeasurement system, in particular the number and spatial arrangement of ultrasound sensors, and the ability to account for the spatio-temporal response of the sensor element(s) in the reconstruction algorithm. Herein we present a reconstruction procedure based on the inversion of a time-domain forward model incorporating the spatial impulse response due to the shape of the transducer,which is subsequently applied in a tomographic system based on a translation-rotation scan of a linear detector array. The proposed method was also adapted to cope with the data-intensive requirements of high-resolution volumetric optoacoustic imaging. The processing of 2·104 individual signals resulted in well-resolved images of both ∼ 200 μm absorbers in phantoms and complex vascular structures in biological tissue. The results reported herein demonstrate that the introduced model-based methodology exhibits a better contrast and resolution than standard back-projection and model-based algorithms that assume point detectors. Moreover, the capability of handling large datasets anticipates that model-basedmethods incorporating the sensor properties can become standard practice in volumetric optoacoustic image formation. © 1982-2012 IEEE.
Involved external institutions
Germany (DE)How to cite
APA:
Caballero, M.A.A., Gateau, J., Dean-Ben, X.-L., & Ntziachristos, V. (2014). Model-based optoacoustic image reconstruction of large three-dimensional tomographic datasets acquired with an array of directional detectors. IEEE Transactions on Medical Imaging, 33(2), 433-443. https://doi.org/10.1109/TMI.2013.2286546
MLA:
Caballero, Miguel Angel Araque, et al. "Model-based optoacoustic image reconstruction of large three-dimensional tomographic datasets acquired with an array of directional detectors." IEEE Transactions on Medical Imaging 33.2 (2014): 433-443.
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