Tag: Legion ADC
Legion ADC Operation Video in Mandarin
Legion ADC Operation
REAL-TIME PHOTOACOUSTIC DATA ACQUISITION WITH A THOUSAND PARALLEL CHANNELS AT HUNDREDS FRAMES PER SECOND
Authors: Vassili Ivanov, Hans Peter Brecht, Sergey A. Ermilov ABSTRACT Large number of simultaneously acquired spatially distinct pressure signals is required to improve quality of real-time photoacoustic and x-ray acoustic biomedical images [1]. In the past this approach was limited by availability of commercial multi-channel analog-to-digital converter (ADC) systems and ability to operate multiple ADC […]
MASSIVE PARALLEL ULTRASOUND AND PHOTOACOUSTIC PC-BASED SYSTEM
Authors: Weylan Thompson, Hans Peter Brecht, Sergey Ermilov, Vassili Ivanov ABSTRACT PhotoSound Technologies specializes in the development of electronics solutions for massive parallel data acquisition applicable to the fields of photoacoustics (PA), X-ray acoustics, including 3D dosimetry, and ultrasound. PhotoSound’s Legion ADC256 R1.1, released in 2018, is a 256-channel 12-bit ADC with a sampling rate […]
PHOTOACOUSTIC IMAGING FOR IN VIVO QUANTIFICATION OF ALCOHOL-INDUCED STRUCTURAL AND FUNCTIONAL CHANGES IN CEREBRAL VASCULATURE IN HIGH ALCOHOL-PREFERRING MICE (HAP)
Authors: Augustine Meombe Mbolle, Hao Yang, Huabei Jiang* ABSTRACT Alcohol-induced structural and functional changes were studied in vivo by photoacoustic tomography (PAT) of the cerebrovascular system in selectively bred alcohol-preferring mice. High (HAP) and low (LAP) alcohol-preferring mice are replicate lines of mice selectively bred to prefer 10% (v/v) ethanol to water and water to […]
IN SITU X-RAY-INDUCED ACOUSTIC COMPUTED TOMOGRAPHY WITH A CONTRAST AGENT: A PROOF OF CONCEPT
Authors: Seongwook Choi,1; Sinyoung Park,1; Ayoung Pyo,2; Dong-Yeon Kim,3 ; Jung-Joon Min,4 ; Changho Lee,4,5,6; Chulhong Kim,1,7 ABSTRACT X-ray-induced acoustic computed tomography (XACT) has shown great potential as a hybrid imaging modality for real-time non-invasive x-ray dosimetry and low-dose three- dimensional (3D) imaging. While promising, one drawback of the XACT system is the underlying low signal-to-noise ratio […]
SIZE-ADJUSTABLE RING-SHAPE PHOTOACOUSTIC TOMOGRAPHY IMAGER IN VIVO
Author(s): Daohuai Jiang1,2,3, Yifei Xu1, Hengrong Lan1,2,3, Yuting Shen1, Yifan Zhang1,Feng Gao1, Li Liu4*, Fei Gao1,5* ABSTRACT Photoacoustic tomography (PAT) has become a novel biomedical imaging modality for scientific research and clinical diagnosis. It combines the advantages of spectroscopic optical absorption contrast and acoustic resolution with deep penetration. In this article, an imaging size-adjustable PAT […]
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 […]
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 […]
