Paper Accepted to IEEE ICASSP

Congratulations to Arun Nair on the acceptance of his manuscript to the IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP).

Paper ID: 3434
Title: A DEEP LEARNING BASED ALTERNATIVE TO BEAMFORMING ULTRASOUND IMAGES
Session Title: ‘SAM Poster Session 4: Beamforming’
Authors: AA Nair, T Tran, A Reiter, MAL Bell

This conference will take place 15–20 April 2018.

Prof. Bell featured in SPIE Women in Optics Planner

Prof. Bell is featured in the 2018 Women in Optics Planner produced by SPIE. This planner includes photos and interesting facts about highlighted women to introduce girls and young women to the possibilities of STEM careers. Five thousand copies of the planner are printed and distributed, free of charge, in more than 25 countries worldwide annually.

SPIE Members, career counselors, science teachers, and community clubs can request free copies of this planner.

SPIE Newsroom Announcement

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Prof. Bell Receives NSF CAREER Award

Congratulations to Prof. Bell for being selected to receive the NSF CAREER Award. The Faculty Early Career Development (CAREER) Program is a Foundation-wide activity that offers the National Science Foundation’s most prestigious awards in support of early-career faculty who have the potential to serve as academic role models in research and education and to lead advances in the mission of their department or organization.  The objective of Prof. Bell’s proposal entitled CAREER: Technical & Theoretical Foundations for Photoacoustic-Guided Surgery is to apply optical analyses, spatial coherence theory, and independent resolution models to describe fundamental performance limits of photoacoustic-based navigation during robotic and nonrobotic surgery.

ECE Department Announcement

Malone Center Announcement

WSE Announcement

JMI Paper Accepted

Congrats to undergraduate student Margaret Allard on the acceptance of her first-author journal paper entitled Feasibility of photoacoustic-guided teleoperated hysterectomies. This paper will appear in the Journal of Medical Imaging (JMI) Special Section on Image-Guided Procedures, Robotic Interventions, and Modeling.

This paper is the first to describe the feasibility of photoacoustic integration with the da Vinci surgical robot to potentially guide minimally invasive hysterectomies and other gynecological surgeries.  To implement photoacoustic imaging, a novel light delivery system was designed and implemented  to surround da Vinci tools. This new light delivery system uniquely enabled the investigations described in the paper, including  the first known analysis of the optimal tool orientations for photoacoustic-guided hysterectomies using a da Vinci scissor tool (which partially blocks the transmitted light in some cases). This work can be extended to other da Vinci tools and laparoscopic instruments with similar tip geometry.

Margaret completed this work through her participation in our NSF Research Experience for Undergraduates in Computational Sensing and Medical Robotics.

Brooke Wins Second Place in Undergrad Poster Competition

Congratulations to PULSE Lab undergraduate student Brooke Stephanian on her 2nd place win in the Optics and Photonics Conference at JHU! She presented a poster that summarized the work she completed this semester on the topic “Theoretical Simulation to Optimize Short-Lag Spatial Coherence (SLSC) Photoacoustic Image Quality”.

Conference website: https://engineering.jhu.edu/ece/osa/hopkins-photonics-conference/

Journal Paper Accepted to IEEE UFFC

Congrats to Arun Nair on the acceptance of his paper entitled “Robust Short-Lag Spatial Coherence Imaging” to the IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control. This paper will appear in the special issue on sparsity driven methods in medical ultrasound.

This work is the first to re-examine the lag summation step of the Short-Lag Spatial Coherence (SLSC) algorithm and achieve additional robustness to coherence outliers through both weighted summation of individual coherence images (i.e., M-weighting) and the application of robust principal component analysis (i.e., Robust SLSC, or R-SLSC). Results show great promise for smoothing out the tissue texture of SLSC images, improving boundary delineation, and enhancing anechoic or hypoechoic target visibility at higher lag values. These improvements could be useful in clinical tasks such as breast cyst visualization, liver vessel tracking, and obese patient imaging.

Citation: AA Nair, T Tran, MAL Bell, Robust Short-Lag Spatial Coherence Imaging, IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control (accepted) [pdf]

Also Available on Journal Website: http://ieeexplore.ieee.org/document/8166807/

Two PULSE Lab abstracts accepted to OSA Optics and Photonics Conference at JHU

Congrats to undergraduate student Brooke Stephanian and PhD student Derek Allman! Their abstracts were accepted to the 2017 Optics and Photonics Conference at Johns Hopkins University.

Brooke will present a poster entitled: Theoretical Simulation to Optimize Short-Lag Spatial Coherence (SLSC) Photoacoustic Image Quality 

Derek will give a presentation entitled: Using convolutional neural networks to eliminate reflection artifacts in experimental photoacoustic images

Conference details: https://engineering.jhu.edu/ece/osa/hopkins-photonics-conference/

Free registration: https://www.eventbrite.com/e/optics-and-photonics-conference-at-johns-hopkins-university-tickets-39142374897?aff=es2

Optics and Photonics Conference at Johns Hopkins University

The student chapter of the Optical Society of America at Johns Hopkins is hosting a day-long optics and photonics conference on Monday December 11, 2017.

The goal of this conference is to bring together leaders in the optical sciences from a wide range of subjects, to foster learning, collaboration, and to emphasize the impact optics and photonics have on a plethora of disciplines.

The conference will feature invited talks by the following researchers in various optics and photonics areas:

Nader Engheta
H. Nedwell Ramsey Professor, University of Pennsylvania

Jay Guo
Professor of Electrical Electronics and Computer Science, University of Michigan

Michelle Sander
Assistant Professor, Electrical and Computer Engineering Department, Boston University

Audrey Bowden
Associate Professor, Electrical Engineering Department, Stanford University

Giuliano Scarcelli
Assistant Professor, The Fischell Department of Bioengineering, University of Maryland

For more details: https://engineering.jhu.edu/ece/osa/hopkins-photonics-conference/

To register: https://www.eventbrite.com/e/optics-and-photonics-conference-at-johns-hopkins-university-tickets-39142374897?aff=es2

SPIE Medical Imaging Paper Accepted

Our paper, “Feasibility of photoacoustic guided hysterectomies with the da Vinci robot,” was accepted for Oral presentation at SPIE Medical Imaging in the Image-Guided Procedures, Robotic Interventions, and Modeling conference.

Session 2
Keynote and Medical Robotics

Tuesday 13 February 2018
10:10 AM – 12:10 PM

Feasibility of photoacoustic guided hysterectomies with the da Vinci robot
Paper 10576-9
Authors: Margaret Allard, Joshua Shubert, Muyinatu A. Lediju Bell

Congrats to Margaret, Josh, and Prof. Bell!

Three Abstracts Accepted to SPIE Photonics West

Three PULSE Lab abstracts were accepted to SPIE Photonics West in the BiOS Conference Track: Photons Plus Ultrasound: Imaging and Sensing 2018 (Conference 10494). This conference track will take place Sunday- Wednesday  January -28-31, 2018 at the The Moscone Center in San Francisco, California.

  1. A novel drill design for photoacoustic guided surgeries 
    Paper 10494-18
    Authors: Joshua Shubert, Muyinatu Bell
    Session 3: Therapy Monitoring and Guidance II
    Sunday 28 January 2018
    1:30 PM – 2:45 PM
  2. Using convolutional neural networks to eliminate reflection artifacts in experimental photoacoustic images
    Paper 10494-190
    Authors: Derek Allman, Austin Reiter, Muyinatu Bell
    Session PTue: Posters-Tuesday
    Tuesday 30 January 2018
    6:00 PM – 8:00 PM
  3. Development and validation of a short-lag spatial coherence theory for photoacoustic imaging
    Paper 10494-193
    Authors: Michelle Graham, Muyinatu Bell
    Session PTue: Posters-Tuesday
    Tuesday 30 January 2018
    6:00 PM – 8:00 PM

Congrats to  Josh, Derek, and Michelle!

Conference track website: https://spie.org/PWB/conferencedetails/photons-plus-ultrasound

IEEE IUS 2017 Recap

We just returned from a successful, invigorating, and inspiring IEEE International Ultrasonics Symposium (IUS) held in Washington, DC at the Omni Shoreham Hotel. Some photograph highlights of our involvement appear below.

Joshua Shubert presented his poster entitled “Photoacoustic Based Visual Servoing of Needle Tips to Improve Biopsy on Obese Patients

Derek Allman presented his poster entitled “A Machine Learning Method to Identify and Remove Reflection Artifacts in Photoacoustic Channel Data

Prof. Bell served on the 2017 IUS Organizing Committee as the Communications Chair. She received a certificate  from the UFFC Society President (Clark Nguyen, left) and Vice President for Ultrasonics (Jafar Saniie, right) in appreciation of her service.

Michelle Graham (photo unavailable) also presented her poster entitled “Theoretical Application of Short-Lag Spatial Coherence to Photoacoustic Imaging.”

PULSE Lab members additionally collaborated to contribute to the following papers:

 

Welcome to Alycen Wiacek

The PULSE Lab welcomes Alycen Wiacek. Alycen has a M.S. degree in ECE from Oakland University (Rochester, MI) and she completed her B.S. degree in ECE at Wayne State University (Detroit, MI). Welcome Alycen!

SLSC Beamforming Code Now Available on UltraSound Toolbox

The UltraSound Toolbox (USTB) is a free MATLAB toolbox for processing ultrasonic signals. The primary purpose of the USTB is to facilitate the comparison of imaging techniques and the dissemination of research results. The PULSE Lab is proud to collaborate on this effort to deliver SLSC beamforming to the broader ultrasound community. An example using the SLSC algorithm on a CIRS phantom and on human heart data was added today, as described here: http://www.ustb.no/examples/advanced-beamforming/short-lag-spatial-coherence-slsc/. The heart and phantom datasets and the SLSC code are now freely available to use. Additional datasets and beamforming code can be found by perusing the USTB website.

Congrats to Ole Marius Hoel Rindal (our visiting student from the University of Oslo) for putting in the work required to pull this together!

USTB Announcement

Margaret Allard Receives Best Presentation Award

Congratulations to PULSE Lab undergraduate student Margaret Allard who received the best presentation award from the NSF REU program in Computational Sensing and Medical Robotics. Her presentation was entitled Identifying Optimal da Vinci Tool Orientations for Photoacoustic Guided Hysterectomies. Prof. Jerry Prince presented Margaret with this award.

This award was shared by Margaret Allard and Mindy Wagenmaker.

JHU ECE Department Announcement

JBO Paper Accepted

Our paper entitled Photoacoustic-based approach to surgical guidance performed with and without a da Vinci robot was accepted for publication in the Journal of Biomedical Optics (JBO) Special Section on Translational Biophotonics.

Congrats to undergraduates Neeraj Gandhi and Margaret Allard!

This work was completed in partnership with the NSF REU in Computational Sensing and Medical Robotics along with collaborators Sungmin Kim and Peter Kazanzides, and it is the first to integrate photoacoustic imaging with the da Vinci surgical robot. It was also featured on the journal homepage.

ECE Department Announcement

Summer Enrichment Camp Visits PULSE Lab

The Miracle City Summer Enrichment Camp (MCSEC) visited the PULSE Lab and learned about topics ranging from sonography to robot assisted ultrasound imaging and photoacoustic-guided surgery. Hands-on demonstrations enabled this inquisitive group of middle schoolers to scan an abdominal phantom, operate a neurosurgical drill, and teleoperatively manipulate the da Vinci robot arms in the LCSR mock operating room.

  • Joshua Shubert explains his robot assisted imaging project
    Joshua Shubert explains his robot assisted imaging project
  • Michelle Graham explains her neurosurgery project
    Michelle Graham explains her neurosurgery project
  • Prof. Bell describes ultrasound imaging basics
    Prof. Bell describes ultrasound imaging basics
  • Visit to the mock OR to learn about the da Vinci robot
    Visit to the mock OR to learn about the da Vinci robot
  • Prof. Bell describes da Vinci robot
    Prof. Bell describes da Vinci robot
  • MCSEC campers manipulate da Vinci tools
    MCSEC campers manipulate da Vinci tools
  • MCSEC and PULSE Lab Members
    MCSEC and PULSE Lab Members

Three Abstracts Accepted to IEEE IUS 2017

Three PULSE Lab abstracts were accepted for presentation during the 2017 IEEE International Ultrasonics Symposium (IUS) to be held on September 6-9, 2017 at the Omni Shoreham Hotel, Washington D.C., USA.

  1. “Theoretical Application of Short-Lag Spatial Coherence to Photoacoustic Imaging” to be presented by Michelle Graham in the MBB: Non linear and coherence imaging poster session, 3-4 pm on Thursday, September 7, 2017. (Abstract ID: 1526)
  2. “Photoacoustic Visual Servoing of Needle Tips to Improve Biopsy Targeting in Obese Patients” to be presented by Joshua Shubert in the MPA: Technical Developments in Photoacoustic Imaging poster session, 3-4 pm  on Friday, September 8, 2017. (Abstract ID: 1088)
  3. “Identification and removal of reflection artifacts in photoacoustic images using convolutional neural networks” to be presented by Derek Allman in the MIM: Machine learning poster session, 9:30-10:30 am on Saturday, September 9, 2017. (Abstract ID: 1523)

Congrats to Michelle, Josh, and Derek!

Symposium website: http://ewh.ieee.org/conf/ius/2017/

Four PULSE Lab Presentations at UITC 2017

PULSE Lab members presented the following four talks at the International Symposium on Ultrasonic Imaging and Tissue Characterization, June 5-7, 2017:

  1. Principal component short-lag spatial coherence imaging (PC-SLSC), Arun Asokan Nair, Trac D. Tran and Muyinatu A. Lediju Bell
  2. Photoacoustic-based visual servoing of needle tips to improve surgery on obese patients, Joshua Shubert and Muyinatu Bell
  3. Theoretical application of short-lag spatial coherence to photoacoustic imaging, Michelle Graham and Muyinatu Lediju Bell
  4. Evaluation of a convolutional neural network for identifying reflection artifacts in photoacoustic imaging, Derek M. Allman, Austin Reiter and Muyinatu A. Lediju Bell

Michelle (left) and Derek (right) giving their first PULSE Lab research presentations:

Symposium website: http://uitc-symposium.org/

IEEE ISCAS 2017 Special Session: Innovations In Acoustics

Prof. Bell will co-chair the IEEE ISCAS 2017 Special Session entitled “Innovations In Acoustics”. This session will be held on May 29, 2017 at the Baltimore Marriott Waterfront in Baltimore, MD, and it provides unique access to acoustic researchers from various academic departments across Johns Hopkins University. This special session will cover acoustics on various levels, starting from background noise suppression in an electronic stethoscope, to bat echolocation processing to ultrasonic medical imaging and acoustic beamforming. It includes an invited talk from the father of microphone technology, Prof. Jim West, a National Medal of Technology and Innovation winner, a member of the National Academy of Engineering, and a recipient of countless additional high honors. The session also includes a technical talk from a local ultrasound imaging start-up company (Sonavex, Inc.) formed based on ideas born here in Baltimore at Johns Hopkins University, which uniquely supports the conference theme “from Dreams to Innovation”.

Session Details

NIH R00 Grant Awarded

The PULSE Lab received the 2nd phase of Dr. Bell’s NIH K99/R00 award to support our project entitled “Coherence-Based Photoacoustic Image Guidance of Transsphenoidal Surgeries”. This work is motivated by the clinical challenges surrounding the removal of pituitary tumors using the minimally invasive endonasal transsphenoidal approach, which incurs the deadly risk of causing injury to the internal carotid arteries. We propose to eliminate this risk by developing a sophisticated photoacoustic imaging system that visualizes blood vessels located behind bone during the surgical operation. This photoacoustic imaging system will be equipped with our novel coherence-based beamformers and our specialized light delivery systems.

JHU ECE Announcement

ICRA Paper Accepted

Our paper “Improving the Safety of Telerobotic Drilling of the Skull Base Via Photoacoustic Sensing of the Carotid Arteries” was accepted for presentation at the IEEE International Conference on Robotics and Automation (ICRA), Singapore, May 29-June 3, 2017.

Three Abstracts Accepted to SPIE Photonics West

Three abstracts from the PULSE Lab were accepted to SPIE Photonics West, which will take place January 28 – February 2, 2017 in San Francisco, California:

  • Paper 10064-18: A machine learning approach to identifying point source locations in photoacoustic data (29 January 2017 • 5:30 – 7:30 PM)
  • Paper 10064-101: Optimizing light delivery for a photoacoustic surgical system (29 January 2017 • 3:00 – 3:15 PM)
  • Paper 10064-125: Accuracy of a novel photoacoustic-based approach to surgical guidance performed with and without a da Vinci robot (29 January 2017 • 5:30 – 7:30 PM)

SPIE Newsroom Announcement

SPIE Press

Full Conference Program

New Course

Prof. Muyinatu Bell is teaching EN.520.631, Ultrasound and Photoacoustic Beamforming,during the Fall 2016 semester. This is a new course that she is developing.

REU student wins first place award

Congratulations to PULSE Lab undergraduate student Blackberrie Eddins for winning the first place final presentation award in the 2016 NSF Computational Sensing and Medical Robotics (CSMR) Research Experience for Undergraduates (REU) program at JHU! She tied in first place for this award with Luke Arend, another student participant.

IEEE TBME Paper Accepted

Prof. Bell’s co-authored paper, “System integration and in-vivo testing of a robot for ultrasound guidance and monitoring during radiotherapy”, has been accepted for publication in IEEE Transactions on Biomedical Engineering.

Welcome REU Students

Welcome to undergraduate students Blackberrie Eddins and Neeraj Gandhi who will be working with us this summer through the NSF Computational Sensing and Medical Robotics (CSMR) Research Experience for Undergraduates (REU) program.

BioRob Paper Accepted

Our paper, Feasibility of photoacoustic image guidance for telerobotic endonasal transsphenoidal surgery, which describes the first telesurgical photoacoustic image-guided navigation system setup implemented on a research da Vinci Surgical System, has been accepted as an oral presentation at the 6th IEEE RAS/EMBS International Conference on Biomedical Robotics and Biomechatronics, June 26-29, 2016, in University Town, Singapore.

New Online Course

Dr. Bell is pleased to announce the lauching of her first interactive online course, Introduction to Medical Imaging. Interested students may use this link to enroll in the course and receive a special discount.

Two “Best” Awards in One Week

  • Dr. Bell’s co-authored paper, System Integration and Preliminary In-Vivo Experiments of a Robot for Ultrasound Guidance and Monitoring during Radiotherapy, was the runner-up for the Best Paper Award at the 17th International Conference on Advanced Robotics in Istanbul, Turkey. The paper received honorable mention.
  • Dr. Bell’s student, Alicia Dagle, received the Best Presentation Award at the 2015 NSF Computational Sensing and Medical Robotics Research Experience for Undergraduates (CSMR REU) Award Ceremony. Alicia is an undergraduate student at Clark University who will pursue a joint engineering program with Columbia University. She worked closely with Dr. Bell at Johns Hopkins University throughout the ten-week summer program.

NIH K99 Pathway to Independence Award

Dr. Muyinatu A. Lediju Bell received the NIH Pathway to Independence Award for her project entitled Coherence-Based Photoacoustic Image Guidance of Transsphenoidal Surgeries. This award promises support for 1-2 more years of postdoctoral training and the first 3 years of Dr. Bell’s independent faculty position.

JHU Whiting School of Engineering Announcement

JHU Laboratory for Computational Sensing and Robotics (LCSR) Announcement

Dr. Bell Wins the Ford Foundation Postdoctoral Fellowship

Dr. Muyinatu A. Lediju Bell is selected as an awardee in the Ford Foundation Fellowship 2013 postdoctoral competition, sponsored by the Ford Foundation and administered by the National Research Council of the National Academies. The competition seeks to increase the diversity of the nation’s college and university faculties by increasing their ethnic and racial diversity, to maximize the educational benefits of diversity, and to increase the number of professors who can and will use diversity as a resource for enriching the education of all students.

Two-Time UNCF-Merck Fellowship Recipient

Dr. Muyinatu A. Lediju Bell was one of 10 postoctoral fellows to win the prestigious UNCF-Merck Postdoctoral Fellowship. She is officially a two-time recipient of the award, as she also won the graduate level award to complete her PhD dissertation entitled, Improved Visualization of Endocardial Borders with Short-Lag Spatial Coherence Imaging. The postdoctoral award totals $92,000 for a maximum of two years.