Author(s): Gong, Linghui and Cai, Chao and Lin, Fukang and Xu, Zequan and Wang, Zhaoyu and Li, Hui and Liu, Yubin ABSTRACT In this study, we utilized a home-made photoacoustic tomography system to recover optical absorption coefficient and elastic modulus under single wavelength. To reconstruct the optical absorption coefficient from photoacoustic measurements, we amalgamate the finite […]
Tag: photoacoustic computed tomography
3D Frequency-Domain Full Waveform Inversion for Whole-Breast Imaging With a Multi-Row Ring Array
Author(s): Rehman Ali, Gaofei Jin, Melanie Singh, Trevor Mitcham, Nebojsa Duric ABSTRACT For ring-array ultrasound tomography, two-dimensional frequency-domain full waveform inversion is the clinical gold standard for high-resolution imaging of the breast. While yielding high-resolution images in the plane of the ring-array, the resulting slice-wise approach yields lower resolution out of plane when used to reconstruct […]
Utility of Low-Cost Multichannel Data Acquisition System for Photoacoustic Computed Tomography
Author(s): Zafar, Mohsin, Rayyan Manwar, Seyed Mohsen Ranjbaran, and Kamran Avanaki ABSTRACT Typically, multi-single-element photoacoustic computed tomography (PACT) systems utilize numerous ultrasound transducers arranged in cylindrical or hemispherical configurations for detection, combined with a single diffuse light source or multiple sparse light sources to illuminate the imaging target. While these systems produce high-quality 3D PA images, […]
Signal-domain speed-of-sound correction for ring-array-based photoacoustic tomography
Author(s): Daohuai Jiang, Hengrong Lan, Shangqing Tong, Xianzeng Zhang, Fei Gao ABSTRACT Photoacoustic imaging combines the advantages of optical and acoustic imaging, making it a promising tool in biomedical imaging. Photoacoustic tomography (PAT) reconstructs images by solving the inverse problem from detected photoacoustic waves to initial pressure map. The heterogeneous speed of sound (SoS) distribution in biological tissue significantly affects […]
Investigating the Impact of Chronical Prenatal Alcohol Exposure on Fetal Vascular Development Across Pregnancy Stages Using Photoacoustic Tomography
Author(s): Hao Yang, Md Farhan Tanvir, Huabei Jiang Graphical Abstract This study investigates the effects of chronic prenatal alcohol exposure on fetal brain vascular development in mice using photoacoustic tomography. Key vascular parameters such as vessel diameter, density, and oxygen saturation were analyzed from embryonic Days 10 to 20. Results demonstrate significant vascular disruptions in alcohol-exposed […]
NON-INVASIVE 3D PHOTOACOUSTIC TOMOGRAPHY OF ANGIOGRAPHIC ANATOMY AND HEMODYNAMICS OF FATTY LIVERS IN RATS
17 November 2022 Author(s): Xin Tong, Li Lin, Peng Hu, Rui Cao, Yang Zhang, Joshua Olick-Gibson,and Lihong V. Wang ABSTRACT Non-alcoholic fatty liver disease is the most common liver disorder worldwide, which strongly correlates to obesity, diabetes, and metabolic syndromes. Complementary to mainstream liver diagnostic modalities, photoacoustic tomography (PAT) can provide high-speed images with functional […]
Neuroimaging
What is Neuroimaging? Neuroimaging is the use of medical imaging techniques to study the structure and function of the nervous system, focusing on the brain. Photoacoustic tomography has been used to image the brain, spinal cord, and other parts of the nervous system. PhotoSound Product Used TriTom Monitoring Neonatal Brain Hemorrhage Progression by Photoacoustic Tomography […]