High-Frequency 3D Photoacoustic Computed Tomography Using an Optical Microring Resonator [PDF]
BME Frontiers, 2022 3D photoacoustic computed tomography (3D-PACT) has made great advances in volumetric imaging of biological tissues, with high spatial-temporal resolutions and large penetration depth.
Qiangzhou Rong +10 more
doaj +2 more sources
Ultrafast filtered back-projection for photoacoustic computed tomography. [PDF]
Biomed Opt ExpressThe filtered back-projection (FBP) algorithm is widely used in photoacoustic computed tomography (PACT) for image reconstruction due to its simplicity and efficiency. Yet, the real-time processing of high-speed PACT data remains challenging for regular FBP implementations.
Liu S, Tan Z, Shao P, Wang S, Tian C.
europepmc +3 more sources
Photoacoustic computed tomography monitors cerebrospinal fluid dynamics and glymphatic function [PDF]
Nature CommunicationsCerebrospinal fluid (CSF) continuously circulates through the brain and surrounding tissues to remove metabolic waste, a process that becomes less efficient with ageing and in neurodegenerative disease.
Seongwook Choi +12 more
doaj +2 more sources
A Hybrid Diffusion Model Enhances Multiparametric 3D Photoacoustic Computed Tomography [PDF]
Advanced SciencePhotoacoustic computed tomography (PACT) reveals biological structures, pharmacokinetics, and physiological functions. Although a premium PACT system with many ultrasound (US) transducers delivers high‐quality volumetric imaging, it suffers from high ...
Hyunsu Jeong +5 more
doaj +2 more sources
Massively parallel functional photoacoustic computed tomography of the human brain. [PDF]
Nat Biomed Eng, 2022 Blood-oxygen-level-dependent (BOLD) functional magnetic resonance imaging of the human brain requires bulky equipment for the generation of magnetic fields. Photoacoustic computed tomography obviates the need for magnetic fields by using light and sound to measure deoxyhaemoglobin and oxyhaemoglobin concentrations to then quantify oxygen saturation and
Na S +11 more
europepmc +5 more sources
Photoacoustic Computed Tomography of Breast Cancer in Response to Neoadjuvant Chemotherapy [PDF]
Advanced Science, 2021 Neoadjuvant chemotherapy (NAC) has contributed to improving breast cancer outcomes, and it would ideally reduce the need for definitive breast surgery in patients who have no residual cancer after NAC treatment.
Li Lin +5 more
doaj +4 more sources
Multimodal photoacoustic computed tomography technology and applications
Journal of Innovative Optical Health SciencesPhotoacoustic computed tomography (PACT) combines optical functional contrast with ultrasonic spatial resolution, enabling noninvasive structural and functional imaging of deep tissues.
Huiting Wen +3 more
doaj +2 more sources
Challenges and advances in two-dimensional photoacoustic computed tomography: a review. [PDF]
J Biomed OptPhotoacoustic computed tomography (PACT), a hybrid imaging modality combining optical excitation with acoustic detection, has rapidly emerged as a prominent biomedical imaging technique.We review the challenges and advances of PACT, including (1) limited view, (2) anisotropy resolution, (3) spatial aliasing, (4) acoustic heterogeneity (speed of sound ...
Zhang S, Miao J, Li LS.
europepmc +3 more sources
On artefact reduction, segmentation and classification of 3D computed tomography imagery in baggage security screening [PDF]
, 2014 This work considers novel image-processing and computer-vision techniques to advance the automated analysis of low-resolution, complex 3D volumetric Computed Tomography (CT) imagery obtained in the aviation-security-screening domain. Novel research is
Mouton, Andre
core +7 more sources
Photoacoustic computed tomography of human extremities [PDF]
Journal of Biomedical Optics, 2019 We present a method of imaging angiographic structures in human extremities, including hands, arms, legs, and feet, using a newly developed photoacoustic computed tomography (PACT) system. The system features deep penetration (1.8 cm in muscular tissues) with high spatial and temporal resolutions.
Wray, Parker +3 more
openaire +3 more sources