available on 2024-09-29 Author(s): Vinoin Devpaul Vincely, Carolyn L Bayer ABSTRACT The placenta, a highly vascularized interface between the mother and fetus, undergoes dramatic anatomical and functional changes during pregnancy. These changes occur both during healthy development and adverse pathologies of pregnancy, such as preeclampsia. Abnormal placental development can lead to life-long health impacts on both the […]
Tag: PhotoSound
SPHERICAL-VIEW PHOTOACOUSTIC TOMOGRAPHY FOR MONITORING IN VIVO PLACENTAL FUNCTION
29 September 2020 Author(s): Kristie Huda , Chengxi Wu , Jaclyn G. Sider, Carolyn L. Bayer ABSTRACT Photoacoustic tomography has great potential to image dynamic functional changes in vivo. Many tomographic systems are built with a circular view geometry, necessitating a linear translation along one axis of the subject to obtain a three-dimensional volume. In this work, we […]
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 […]
WHOLE-BODY HUMAN UTLRASOUND TOMOGRAPHY
ABSTRACT We developed a system for whole-body human ultrasound tomography in reflection andtransmission 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 technique in regions such as the abdomen and legs in healthy volunteers. Compared […]
A COMBINED ULTRASOUND AND PHOTOACOUSTIC IMAGING PLATFORM FOR CLINICAL RESEARCH APPLICATIONS
3 March 2022 Author(s): Weylan Thompson, Hans-Peter Brecht, Sergey A. Ermilov, Vassili Ivanov ABSTRACT We present the continued development of a clinical ultrasound (US) imaging device with a photoacoustic (PA) mode. The combined USPA imaging platform is designed around a compact US component capable of B-mode, M-mode, color Doppler, and pulsed wave Doppler US imaging modes with a […]
HYBRID PHOTOACOUSTIC ULTRASOUND IMAGING SYSTEM FOR COLD-INDUCED VASOCONSTRICTION AND VASODILATION MONITORING
02 August 2023 Author(s): Ruochong Zhang, Xiuting Li, Ghayathri Balasundaram, Baocheng Li, Yi Qi, Anindita Santosa, Tze Chin Tan, Malini Olivo, Renzhe Bi ABSTRACT Lewis hunting reaction refers to the alternating cold-induced vasoconstriction and dilation in extremities, whose underlying mechanism is complex. While numerous studies reported this intriguing phenomenon by measuring cutaneous temperature fluctuation under cold exposure, few of them tracked peripheral vascular […]
A 3D IMAGING SYSTEM INTEGRATING PHOTOACOUSTIC AND FLUORESCENCE ORTHOGONAL PROJECTIONS FOR ANATOMICAL, FUNCTIONAL, AND MOLECULAR ASSESSMENT OF RODENT MODELS
16 March 2018 Authors: Hans P. Brecht, Vassili Ivanov, Diego S. Dumani, Stanislav Y. Emelianov, Mark A. Anastasio, Sergey A. Ermilov ABSTRACT We have developed a preclinical 3D imaging instrument integrating photoacoustic tomography and fluorescence (PAFT) addressing known deficiencies in sensitivity and spatial resolution of the individual imaging components. PAFT is designed for simultaneous acquisition of photoacoustic and fluorescence orthogonal […]
COMPARATIVE EVALUATION OF A NIR-II NANOPARTICLE WITH AND WITHOUT THE LEGION AMP
Overview: The Legion AMP webinar series is hosted by PhotoSound Technologies Marketing Specialist Sarah Argo. In the first webinar of the Legion AMP Webinar Series, Sergey Ermilov (CEO), discussed the Legion AMP design, motivation, and benefits in relation to how it could optimize your research. Vinoin Devpaul Vincely, from Carolyn Bayer’s lab at Tulane University, […]
FIBER TIP TRACKING WITH PHOTOACOUSTIC IMAGING BY USING LEGION AMP
Overview: The Legion AMP webinar series is hosted by PhotoSound Technologies Marketing Specialist’s Sarah Argo. In the second webinar of the Legion Amp Webinar Series, Samuel Toler (System Test Engineer I), discussed the Legion Amp design, motivation, and benefits in relation to how it could optimize your research. Samuel John and Dr. Yan Yan, from […]
DUAL-MODALITY X-RAY-INDUCED RADIATION ACOUSTIC AND ULTRASOUND IMAGING FOR REAL-TIME MONITORING OF RADIOTHERAPY
This is the third webinar of the Legion AMP webinar series, hosted by PhotoSound Technologies. This webinar covers dual-modality, ultrasound, and thermoacoustic imaging in real-time, while using an ionizing radiation source, for the purpose of monitoring radiation therapy, as presented by Dr. Wei Zhang from the Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, […]