publications

2026

  1. Toward a new paradigm in surgical guidance: real-time multimodal non-contact ultrasound and photoacoustic imaging
    Hyunwoo Song, Yaning Wang, Balazs Vagovolgyi, Mahban Gholijafari, Seongjun Park, Brendan Burkhart, Ziyi Huang, Jinglu Yu, Jeeun Kang, Jin U. Kang, and Emad M. Boctor
    In IEEE International Ultrasonics Symposium (IUS 2026), Raleigh, North Carolina, USA, Oct 2026
  2. Tool-tip tissue-awareness (T3A) – a non-contact photoacoustic beacon for surgical safety: a feasibility study
    Hyunwoo Song, Keshuai Xu, Mahban Gholijafari, and Emad M. Boctor
    In IEEE International Ultrasonics Symposium (IUS 2026), Raleigh, North Carolina, USA, Oct 2026
  3. Non-invasive ultrasound sculpting of light to improve fluorescence depth of view
    Thomas Lu, Mahban Gholijafari, Lloyd Lobo, Hyunwoo Song, Keshuai Xu, Maysam Chamanzar, and Emad Boctor
    In IEEE International Ultrasonics Symposium (IUS 2026), Raleigh, North Carolina, USA, Oct 2026
  4. Polarized photoacoustic imaging: a new paradigm for label-free nerve imaging
    Mahban Gholijafari, Seongjun Park, Yixuan Wu, Hyunwoo Song, Jin Kang, Jeeun Kang, and Emad Boctor
    In IEEE International Ultrasonics Symposium (IUS 2026), Raleigh, North Carolina, USA, Oct 2026
  5. A novel label-free intensity-independent differential spectral photoacoustic approach for nerve imaging
    Seongjun Park, Mahban Gholijafari, Hyunwoo Song, Jeeun Kang, and Emad Boctor
    In IEEE International Ultrasonics Symposium (IUS 2026), Raleigh, North Carolina, USA, Oct 2026
  6. Model-based sparse scanning optimization for non-contact photoacoustic imaging
    Mahban Gholijafari, Baichuan Jiang, Hyunwoo Song, Seongjun Park, Yixuan Wu, Jeeun Kang, and Emad Boctor
    In IEEE International Ultrasonics Symposium (IUS 2026), Raleigh, North Carolina, USA, Oct 2026
  7. Adaptive scanning pattern planning for anatomical map registration in non-contact photoacoustic imaging system
    Seongjun Park, Mahban Gholijafari, Hyunwoo Song, Jeeun Kang, and Emad Boctor
    In IEEE International Ultrasonics Symposium (IUS 2026), Raleigh, North Carolina, USA, Oct 2026
  8. No cancer left behind: a testbed and demonstration of concept for photoacoustic tumor bed inspection
    Laura Connolly, Hyunwoo Song, Keshuai Xu, Anton Deguet, Simon Leonard, Gabor Fichtinger, Parvin Mousavi, Russell H. Taylor, and Emad Boctor
    Computer Assisted Surgery, 2026

2025

  1. Remote and dynamically configurable photoacoustic stimulation of retinal ganglion cells for high resolution visual function restoration
    Hyunwoo Song, Thomas Johnson, Alexandra Patterson, Jeeun Kang, Jeongwon Shin, Cindy Berlinicke, Chad Weiler, Keshuai Xu, David Shrekenhamer, James B. Spicer, Seth Billings, Donald J. Zack, and Emad M. Boctor
    In ARVO 2025 Annual Meeting, Salt Lake City, Utah, USA, May 2025
  2. Grating lobe suppression using synthetic optically-tracked sparse aperture focusing for non-contact ultrasound imaging
    Hyunwoo Song, Emad M. Boctor, and Jeeun Kang
    In Int. Symp. on Ultrasonic Imaging and Tissue Characterization 2025, Silver Spring, MD, USA, May 2025

2024

  1. Performance limits of a polymer matrix nanocomposite as a photoacoustic transmitter for retinal stimulation
    Alexandra Patterson, Hyunwoo Song, Keshuai Xu, Jeeun Kang, Emad M. Boctor, and James B. Spicer
    In 2024 IEEE Nanotechnology Materials and Devices Conference (NMDC), 2024
  2. Synthesis and characterization of a biocompatible, polymer matrix nanocomposite for photoacoustic applications
    Alexandra L. Patterson, Hyunwoo Song, Jeeun Kang, Emad M. Boctor, and James B. Spicer
    In 2024 IEEE 24th International Conference on Nanotechnology (NANO), 2024
  3. Towards visual function restoration through photoacoustic stimulation
    Hyunwoo Song, Alexandra Patterson, Jeeun Kang, Jie Cheng, Casey Keuthan, Cindy Berlinicke, Chad Weiler, Keshuai Xu, Nora Lane, David Shrekenhamer, Peter Gehlbach, James B. Spicer, Seth Billings, Donald J. Zack, and Emad M. Boctor
    In ARVO 2024 Annual Meeting, Seattle, Washington, USA, May 2024
    🏆 Robertson Translational Research Grant

2023

  1. Arc-to-line registration method for ultrasound and photoacoustic image-guided intraoperative robot-assisted laparoscopic prostatectomy
    Hyunwoo Song, Shuojue Yang, Zijian Wu, Hamid Moradi, Russell H. Taylor, Jin U. Kang, Septimiu E. Salcudean, and Emad M. Boctor
    International Journal of Computer Assisted Radiology and Surgery, 2023
    🏆 Siemens Best Paper Award: Runner-up, IPCAI 2023
    Link to paper
  2. Automatic search for photoacoustic marker using transrectal ultrasound robot
    Zijian Wu, Hamid Moradi, Shuojue Yang, Hyunwoo Song, Emad M. Boctor, and Septimiu E. Salcudean
    Journal of Biomedical Optics, 2023
  3. Spectral Doppler estimation in laser ultrasound: feasibility study
    Hyunwoo Song, Emad M. Boctor, and Jeeun Kang
    In IEEE International Ultrasonics Symposium (IUS 2023), Montreal, Quebec, Canada, Sep 2023
  4. Photoacoustic emission efficiency of polymer matrix nanocomposites for use in epiretinal prosthetics
    James B. Spicer, Hyunwoo Song, Alexandra Patterson, Jeeun Kang, and Emad Boctor
    In IEEE Nanotechnology Materials and Devices Conference (NMDC 2023), Paestum, Italy, Oct 2023
  5. Towards photoacoustic prostate imaging using continuous wave laser excitation
    Hamid Moradi, Keshuai Xu, Hyunwoo Song, Septimiu E. Salcudean, and Emad M. Boctor
    In Photons Plus Ultrasound: Imaging and Sensing 2023, 2023

2022

  1. Synthetic radial aperture focusing to regulate manual volumetric scanning for economic transrectal ultrasound imaging
    Hyunwoo Song, Jeeun Kang, and Emad M. Boctor
    Ultrasonics, 2022
    Link to paper
  2. A novel design framework of synthetic radial aperture focusing for volumetric transrectal ultrasound imaging
    Hyunwoo Song, Jeeun Kang, and Emad M. Boctor
    Journal of Computational Design and Engineering, 2022
    Link to paper
  3. Real-time intraoperative surgical guidance system in the da Vinci surgical robot based on transrectal ultrasound/photoacoustic imaging with photoacoustic markers: an ex vivo demonstration
    Hyunwoo Song, Hamid Moradi, Baichuan Jiang, Keshuai Xu, Yixuan Wu, Russell H. Taylor, Anton Deguet, Jin U. Kang, Septimiu E. Salcudean, and Emad M. Boctor
    IEEE Robotics and Automation Letters, 2022
    Link to paper
  4. Real-time intraoperative surgical guidance system in the da Vinci surgical robot based on transrectal ultrasound/photoacoustic imaging with photoacoustic markers: an ex vivo demonstration
    Hyunwoo Song, Hamid Moradi, Baichuan Jiang, Keshuai Xu, Yixuan Wu, Russell H. Taylor, Anton Deguet, Jin U. Kang, Septimiu E. Salcudean, and Emad M. Boctor
    In 2022 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2022), 2022
  5. Radial synthetic aperture focusing to regulate scanning angle disorientation in a low-cost 3D transrectal ultrasound imaging
    Hyunwoo Song, Jeeun Kang, and Emad M. Boctor
    In IEEE International Ultrasonics Symposium (IUS 2022), Virtual, 2022
  6. Analysis on the radial synthetic aperture focusing for low-cost 3D transrectal ultrasound imaging to regulate scanning angle disorientation
    Hyunwoo Song, Jeeun Kang, and Emad M. Boctor
    In Int. Symp. on Ultrasonic Imaging and Tissue Characterization 2022, Virtual, 2022
  7. Functional guidance of nerve graft surgery using dual-modal photoacoustic and fluorescence imaging of voltage-sensitive dye: ex vivo proof-of-concept study
    Hyunwoo Song, Jeeun Kang, and Emad M. Boctor
    In SPIE Photonics West 2021, San Francisco, CA, USA, Feb 2022

2021

  1. An optimization of volumetric transrectal ultrasound imaging using radial synthetic aperture focusing: a closed-form analytic solution
    Hyunwoo Song, Jeeun Kang, and Emad Boctor
    In Int. Symp. on Ultrasonic Imaging and Tissue Characterization (UITC 2021), Washington DC, USA (Oral), Jun 2021

2020

  1. Analysis of the time and phase delay resolutions in ultrasound baseband I/Q beamformers
    Sua Bae, Hyunwoo Song, and Tai-Kyong Song
    IEEE Transactions on Biomedical Engineering, 2020
  2. A volumetric transrectal ultrasound imaging robust to scanning-angle disorientation using radial synthetic aperture focusing technique
    Hyunwoo Song, Jeeun Kang, and Emad Boctor
    In IEEE International Ultrasonics Symposium (IUS 2020), Las Vegas, NV, USA, Sep 2020
  3. Differential ultrasound neuromodulatory responses of rat primary cortical neurons (PCN) with oxygen deprivation in vitro
    Hyunwoo Song, Jeeun Kang, and Emad Boctor
    In IEEE International Ultrasonics Symposium (IUS 2020), Las Vegas, NV, USA (Poster), Sep 2020

2018

  1. Determination of delay resolution in baseband I/Q beamformer using error model of array gain
    Jintae Jang, Sua Bae, Hyunwoo Song, Gangsik Kim, and Tai-Kyong Song
    In IEEE International Ultrasonics Symposium (IUS 2018), Kobe, Japan, Oct 2018

2017

  1. A new synthetic aperture technique using plane waves: exact solution and experimental verification
    Hyunwoo Song and Tai-Kyong Song
    In IEEE Engineering in Medicine and Biology Society (EMBC 2017), Seogwipo, Republic of Korea, Jul 2017

2016

  1. Ultrasound tissue harmonic imaging using nonlinear chirp coded excitation: in vitro study and analysis
    Pilsu Kim, Hyunwoo Song, Sua Bae, and Tai-Kyong Song
    In IEEE International Ultrasonics Symposium (IUS 2016), Tours, France, Sep 2016