Enhancing image quality in circular-view photoacoustic tomography using randomized detection points

S Hakakzadeh, PD Rajendran… - Journal of Physics …, 2024 - iopscience.iop.org
Circular-view (circular scan) photoacoustic computed tomography (PACT) with low-density
detection points (DPs) is an efficient, high-speed, and inexpensive modality with numerous …

Signal restoration algorithm for photoacoustic imaging systems

S Hakakzadeh, M Amjadian, Y Zhang… - Biomedical Optics …, 2023 - opg.optica.org
In a photoacoustic (PA) imaging system, the detectors are bandwidth-limited. Therefore, they
capture PA signals with some unwanted ripples. This limitation degrades the …

Artifact removal factor for Circular-view photoacoustic tomography

S Hakakzadeh, Z Kavehvash… - 2022 IEEE International …, 2022 - ieeexplore.ieee.org
Reducing the number of acoustic detectors in a circular-view photoacoustic imaging system
leads to cost reduction and increased efficiency. But reducing the number of acoustic …

Unipolar back-projection algorithm for photoacoustic tomography

S Hakakzadeh, SM Mostafavi… - 2022 IEEE International …, 2022 - ieeexplore.ieee.org
Among different transducer configurations of a photoacoustic (PA) imaging system, limited-
view configurations (eg, planar and limited-view circular configurations) have more clinical …

A spatial-domain factor for sparse-sampling circular-view photoacoustic tomography

S Hakakzadeh, P Rajendran, VA Nili… - IEEE Journal of …, 2022 - ieeexplore.ieee.org
Circular full-view configuration of photoacoustic imaging systems (C-PAI) has many
applications in biomedicine (eg, breast and brain imaging). To obtain a high-quality …

A Hilbert-based coherence factor for photoacoustic imaging

S Hakakzadeh, Z Kavehvash - 2022 29th National and 7th …, 2022 - ieeexplore.ieee.org
Among the different configurations of a photoacoustic imaging (PAI) system, the planar
configuration has many applications. Due to the limited-view of planar configuration, the …

Adapted coherent weighting in photoacoustic tomography

S Hakakzadeh, SM Mostafavi… - 2021 28th National …, 2021 - ieeexplore.ieee.org
In this paper, we proposed an adapted coherent factor (ACF), which is applied to a circular
scanning photoacoustic computed tomography (C-PACT) arrangement. For validation, ACF …

Phased-Array Compounding for Reflection Ultrasound Computed Tomography Systems

S Hakakzadeh, Z Kavehvash… - 2024 IEEE …, 2024 - ieeexplore.ieee.org
This work introduces a phased-array compounding technique to enhance the image quality
of Reflection Ultrasound Computed Tomography (RUCT) systems. Conventional RUCT …

Coherent Compounding for Photoacoustic Tomography

S Hakakzadeh, SM Mostafavi… - 2023 IEEE International …, 2023 - ieeexplore.ieee.org
Circular-view detector configurations provide higher image quality in a photoacoustic (PA)
imaging system than other configurations. The image quality degrades, and streak artifacts …

Enhancing Contrast in Circular-view Photoacoustic Computed Tomography Systems

S Hakakzadeh, Z Kavehvash… - 2024 IEEE …, 2024 - ieeexplore.ieee.org
In this study, we propose a novel method to enhance image quality in sparse circular-view
photoacoustic computed tomography (PACT) systems. Traditional PACT systems rely on …