Author(s): Qiuqin Mao, Weiwei Zhao, Xiaoqin Qian, Chao Tao, Xiaojun Liu ABSTRACT To suppress the noise and sidelobe of photoacoustic images, a method is proposed combined with spatial coherence and polarity coherence. In this method, PA signals are delayed, multiplied, then performed polarity coherence, and finally summed. The polarity of delayed-and-multiplied signals rather than the amplitude is considered in polarity coherence operation. The polarity coherence […]
Tag: Photoacoustic Imaging
DEEP LEARNING ENABLED REAL-TIME PHOTOACOUSTIC TOMOGRAPHY SYSTEM VIA SINGLE DATA ACQUISITION CHANNEL
Author(s): Hengrong Lan, Daohuai Jiang, Feng Gao, Fei Gao ABSTRACT Photoacoustic computed tomography (PACT) combines the optical contrast of optical imaging and the penetrability of sonography. In this work, we develop a novel PACT system to provide real-time imaging, which is achieved by a 120-elements ultrasound array only using a single data acquisition (DAQ) channel. To reduce the channel number of DAQ, we superimpose 30 nearby […]
Y-NET: HYBRID DEEP LEARNING IMAGE RECONSTRUCTION FOR PHOTOACOUSTIC TOMOGRAPHY IN VIVO
Author(s): Hengrong Lan, Daohuai Jiang, Changchun Yang, Feng Gao, Fei Gao ABSTRACT Conventional reconstruction algorithms (e.g., delay-and-sum) used in photoacoustic imaging (PAI) provide a fast solution while many artifacts remain, especially for limited-view with ill-posed problem. In this paper, we propose a new convolutional neural network (CNN) framework Y-Net: a CNN architecture to reconstruct the initial PA pressure distribution by optimizing both raw data and beamformed images […]
AUTOMATIC FORCE-CONTROLLED 3D PHOTOACOUSTIC SYSTEM FOR HUMAN PERIPHERAL VASCULAR IMAGING
Author(s): David C. Garrett, Jinhua Xu, Geng Ku, and Lihong V. Wang ABSTRACT We developed a system for whole-body human ultrasound tomography in reflection and transmission modes. A custom 512-element ultrasound receiver array with a rotating single-element ultrasound transmitter are used to generate 2D isotropically resolved images across the entire human cross-section. We demonstrate this […]
EVALUATION OF ULTRASOUND SENSORS FOR TRANSCRANIAL PHOTOACOUSTIC SENSING AND IMAGING
Author(s): Thomas Kirchner, Claus Villringer, and Jan Laufer ABSTRACT Significance: Biomedical photoacoustic (PA) imaging is typically used to exploit absorption-based contrast in soft tissue at depths of several centimeters. When it is applied to measuring PA waves generated in the brain, the acoustic properties of the skull bone cause not only strong attenuation but also […]
HIGH-SPEED THREE-DIMENSIONAL PHOTOACOUSTIC COMPUTED TOMOGRAPHY FOR PRECLINICAL RESEARCH AND CLINICAL TRANSLATION
Authors: Li Lin1,4, Peng Hu1,4, Xin Tong1,4, Rui Cao1, Xiaoyun Yuan1,2, David C. Garrett1, Junhui Shi1,3, Konstantin Maslov1 & Lihong V. Wang1 ABSTRACT Photoacoustic computed tomography (PACT) has generated increasing interest for uses in preclinical research and clinical translation. However, the imaging depth, speed, and quality of existing PACT systems have previously limited the potential applications […]
LIVE PRODUCT DEMONSTRATIONS AT EMIM
Scintica is attending EMIM 2023 and is using PhotoSound Technologies, Inc products for live demonstrations! Visit them in #Austria at the Salzburg Congress. They will be at booth 315! Ensure a chance to speak with their preclinical research experts by booking a meeting here: https://lnkd.in/gqQ4Fz9c European Society for Molecular Imaging-ESMI #EMIM2023 #EMIM #EuropeanMolecularImagingMeeting #photoacoustic #fluorescence #imaging #biomedicalscience #biomedicalresearch #science #tomography