Authors: Wei Zhang, Ibrahim Oraiqat, Dale Litzenberg, Kai-Wei Chang, Scott Hadley, Noora Ba Sunbul, Martha M. Matuszak, Christopher J. Tichacek, Eduardo G. Moros, Paul L. Carson, Kyle C. Cuneo, Xueding Wang, & Issam El Naqa ABSTRACT Ionizing radiation acoustic imaging (iRAI) allows online monitoring of radiation’s interactions with tissues during radiation therapy, providing real-time, adaptive […]
Author: PhotoSound
MONITORING NEONATAL BRAIN HEMORRHAGE PROGRESSION BY PHOTOACOUSTIC TOMOGRAPHY
Author(s): Tianqi Shan, Hao Yang, Shixie Jiang, and Huabei Jiang ABSTRACT Neonatal brain hemorrhage (NBH) is the most common neurological disorder in neonates and its clinical interventions are very limited. Understanding the pathology of NBH by non-invasive in-vivo characterization of standardized animal models is essential for developing potential treatments. Currently, there is no suitable tool […]
CHARACTERIZING A PHOTOACOUSTIC AND FLUORESCENCE IMAGING PLATFORM FOR PRECLINICAL MURINE LONGITUDINAL STUDIES
Author(s): Weylan R. Thompson, Hans-Peter F. Brecht, Vassili Ivanov, Anthony M. Yu, Diego S. Dumani, Dylan J. Lawrence, Stanislav Y. Emelianov, Sergey A. Ermilov PAT volumes and slices of in vivo mouse scans. The top PAT row shows 3D renders of the PAT volumes scanned at wavelengths (a) 532 nm for superficial structures, (b) 710 nm for deep structures with deoxygenated […]
BIODEGRADABLE AND BIOCOMPATIBLE SEMICONDUCTOR NANOCRYSTALS AS NIR-II PHOTOACOUSTIC IMAGING CONTRAST AGENTS
Author(s): Vinoin Devpaul Vincely, Swathi P. Katakam, Kristie Huda, Xingjian Zhong, Joshua C. Kays, Allison M. Dennis, Carolyn L. Bayer ABSTRACT Transabdominal imaging using photoacoustics (PA) is limited by optical attenuation of tissue due to high scattering and absorption in the near infrared (NIR) window. Tissue attenuation is lowered when imaging with longer wavelengths in the NIR window (> 950 nm). […]
IMPROVING PHOTOACOUSTIC IMAGING IN LOW SIGNAL-TO-NOISE RATIO BY USING SPATIAL AND POLARITY COHERENCE
Author(s): Qiuqin Mao, Weiwei Zhao, Xiaoqin Qian, Chao Tao, Xiaojun Liu Fig. 6. The variation curve of (a) the FWHM and (b) the image contrast with the decreased SNR of raw signals. 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 […]
DEEP LEARNING ENABLED REAL-TIME PHOTOACOUSTIC TOMOGRAPHY SYSTEM VIA SINGLE DATA ACQUISITION CHANNEL
Author(s): Hengrong Lan, Daohuai Jiang, Feng Gao, Fei Gao Fig. 1. The overview of the proposed single-channel PACT system. PC: personal computer. Pre-amp: Pre-amplifier. 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 […]
Y-NET: HYBRID DEEP LEARNING IMAGE RECONSTRUCTION FOR PHOTOACOUSTIC TOMOGRAPHY IN VIVO
Author(s): Hengrong Lan, Daohuai Jiang, Changchun Yang, Feng Gao, Fei Gao Fig. 5. The example of performance comparison using different methods to reconstruct initial pressure. The four examples correspond to four rows; every column corresponds to different method, from left to right: ground-truth, DAS, TR, Y-Net-EIID, Y-Net-EID, post-processing U-Net and Y-Net. DAS: delay-and-sum; TR: time reversal. The white circles indicate the local details. ABSTRACT Conventional reconstruction […]
RADIATION-INDUCED ACOUSTIC SIGNAL DENOISING USING A SUPERVISED DEEP LEARNING FRAMEWORK FOR IMAGING AND THERAPY MONITORING
Author(s): Zhuoran Jiang, Siqi Wang, Yifei Xu, Leshan Sun, Gilberto Gonzalez, Yong Chen, Q. Jackie Wu, Liangzhong Xiang, Lei Ren ABSTRACT Radiation-induced acoustic (RA) imaging is a promising technique for visualizing radiation energy deposition in tissues, enabling new imaging modalities and real-time therapy monitoring. However, it requires measuring hundreds or even thousands of averages to achieve satisfactory signal-to-noise ratios (SNRs). This repetitive […]
AUTOMATIC FORCE-CONTROLLED 3D PHOTOACOUSTIC SYSTEM FOR HUMAN PERIPHERAL VASCULAR IMAGING
Author(s): David C. Garrett, Jinhua Xu, Geng Ku, and Lihong V. Wang Fig. 1. The composition of the system. (A) The system schematics. (B) The photograph of the experiment. PA: photoacoustic; US: ultrasound 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 […]
DUAL-SCAN PHOTOACOUSTIC TOMOGRAPHY FOR THE IMAGING OF VASCULAR STRUCTURE ON FOOT
Author(s): Chuqin Huang, Yanda Cheng, Wenhan Zheng, Robert W Bing, Huijuan Zhang, Isabel Komornicki, Linda M Harris, Praveen R Arany, Saptarshi Chakraborty, Qifa Zhou, Wenyao Xu, Jun Xia ABSTRACT Chronic leg ulcers are affecting approximately 6.5 million Americans, and they are associated with significant mortality, reduced quality of life, and high treatment costs. Since many […]
