Title
Numerical Investigation of Multiple Scattering and Mode-Converted Shear Waves Caused by Temporal Bone in Transcranial Photoacoustic Imaging
Author
Hosseini, Fatemeh (Tarbiat Modares University)
Mozaffarzadeh, M. (TU Delft ImPhys/Medical Imaging) 
Mahlooiifar, Ali (Tarbiat Modares University)
Verweij, M.D. (TU Delft ImPhys/Medical Imaging)
de Jong, N. (TU Delft ImPhys/Medical Imaging)
Date
2022
Abstract
In recent years, transcranial photoacoustic (TPA) imaging has become a popular modality for diagnosis of brain disorders. However, due to the presence of skull, TPA images are strongly degraded. Acoustically, this degradation is mainly categorized into the phase aberration, mode-converted shear waves, and multiple scattering. Previous studies numerically investigated the effects of mode-converted shear waves and multiple scattering on TPA images while the phase aberration caused by the skull was ignored and a conventional delay-and-sum method was employed for reconstructing TPA images. In this paper, we investigate these effects while a refraction-corrected image reconstruction approach is used to form TPA images. This approach enables separating the effects of phase aberration, mode-converted shear wave and multiple scattering. A realistic human temporal bone based on a MicroCT was used in the numerical model. In average for all the absorbers, the power of the artifacts caused by the mode-converted shear wave and multiple scattering are -13.7 dB and -20.1 dB when the refraction is corrected during image formation, respectively. These values were -7.9 and -18.8 if the conventional reconstruction is used. Accounting for phase aberration enables accurate quantification of the effects of the mode-converted shear waves and multiple scattering, which is necessary for evaluating the methods developed for degrading these effects.
Subject
Mode-converted shear waves
Multiple scattering
Phase aberration correction
Temporal bone
Transcranial photoacoustic imaging
To reference this document use:
http://resolver.tudelft.nl/uuid:ac8eb33b-d945-45bd-8c47-9b1480cc94f0
DOI
https://doi.org/10.1109/IUS54386.2022.9957367
Publisher
IEEE
Embargo date
2023-07-01
ISBN
9781665466578
Source
IUS 2022 - IEEE International Ultrasonics Symposium
Event
2022 IEEE International Ultrasonics Symposium, IUS 2022, 2022-10-10 → 2022-10-13, Venice, Italy
Series
IEEE International Ultrasonics Symposium, IUS, 1948-5719, 2022-October
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Part of collection
Institutional Repository
Document type
conference paper
Rights
© 2022 Fatemeh Hosseini, M. Mozaffarzadeh, Ali Mahlooiifar, M.D. Verweij, N. de Jong