• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer

SAGES

Reimagining surgical care for a healthier world

  • Home
    • COVID-19 Annoucements
    • Search
    • SAGES Home
    • SAGES Foundation Home
  • About
    • Who is SAGES?
    • SAGES Mission Statement
    • Advocacy
    • Strategic Plan, 2020-2023
    • Committees
      • Request to Join a SAGES Committee
      • SAGES Board of Governors
      • Officers and Representatives of the Society
      • Committee Chairs and Co-Chairs
      • Full Committee Rosters
      • SAGES Past Presidents
    • Donate to the SAGES Foundation
    • Awards
      • George Berci Award
      • Pioneer in Surgical Endoscopy
      • Excellence In Clinical Care
      • International Ambassador
      • IRCAD Visiting Fellowship
      • Social Justice and Health Equity
      • Excellence in Community Surgery
      • Distinguished Service
      • Early Career Researcher
      • Researcher in Training
      • Jeff Ponsky Master Educator
      • Excellence in Medical Leadership
      • Barbara Berci Memorial Award
      • Brandeis Scholarship
      • Advocacy Summit
      • RAFT Annual Meeting Abstract Contest and Awards
  • Meetings
    • NBT Innovation Weekend
    • SAGES Annual Meeting
      • 2023 Scientific Session Call For Abstracts
      • 2023 Emerging Technology Call For Abstracts
    • CME Claim Form
    • Industry
      • Advertising Opportunities
      • Exhibit Opportunities
      • Sponsorship Opportunities
    • Future Meetings
    • Past Meetings
      • SAGES 2022
      • SAGES 2021
    • Related Meetings Calendar
  • Join SAGES!
    • Membership Benefits
    • Membership Applications
      • Active Membership
      • Affiliate Membership
      • Associate Active Membership
      • Candidate Membership
      • International Membership
      • Medical Student Membership
    • Member News
      • Member Spotlight
      • Give the Gift of SAGES Membership
  • Patients
    • Healthy Sooner – Patient Information for Minimally Invasive Surgery
    • Patient Information Brochures
    • Choosing Wisely – An Initiative of the ABIM Foundation
    • All in the Recovery: Colorectal Cancer Alliance
    • Find a SAGES Member
  • Publications
    • SAGES Stories Podcast
    • SAGES Clinical / Practice / Training Guidelines, Statements, and Standards of Practice
    • Patient Information Brochures
    • TAVAC – Technology and Value Assessments
    • Surgical Endoscopy and Other Journal Information
    • SAGES Manuals
    • SCOPE – The SAGES Newsletter
    • COVID-19 Annoucements
    • Troubleshooting Guides
  • Education
    • OpiVoid.org
    • SAGES.TV Video Library
    • Safe Cholecystectomy Program
      • Safe Cholecystectomy Didactic Modules
    • Masters Program
      • SAGES Facebook Program Collaboratives
      • Acute Care Surgery
      • Bariatric
      • Biliary
      • Colorectal
      • Flexible Endoscopy (upper or lower)
      • Foregut
      • Hernia
      • Robotics
    • Educational Opportunities
    • HPB/Solid Organ Program
    • Courses for Residents
      • Advanced Courses
      • Basic Courses
    • Video Based Assessments (VBA)
    • Robotics Fellows Course
    • MIS Fellows Course
    • Facebook Livestreams
    • Free Webinars For Residents
    • SMART Enhanced Recovery Program
    • SAGES OR SAFETY Video
    • SAGES at Cine-Med
      • SAGES Top 21 MIS Procedures
      • SAGES Pearls
      • SAGES Flexible Endoscopy 101
      • SAGES Tips & Tricks of the Top 21
  • Opportunities
    • NEW-Area of Concentrated Training Seal (ACT)-Advanced Flexible Endoscopy-Coming Soon!
    • SAGES Fellowship Certification for Advanced GI MIS and Comprehensive Flexible Endoscopy
    • Multi-Society Foregut Fellowship Certification
    • SAGES Research Opportunities
    • Fundamentals of Laparoscopic Surgery
    • Fundamentals of Endoscopic Surgery
    • Fundamental Use of Surgical Energy
    • Job Board
    • SAGES Go Global: Global Affairs and Humanitarian Efforts
  • Search
    • Search All SAGES Content
    • Search SAGES Guidelines
    • Search the Video Library
    • Search the Image Library
    • Search the Abstracts Archive
  • Store
    • “Unofficial” Logo Products
  • Log In

Novel augmented reality needle guidance for laparoscopic liver ablation

Lung W Lau, MD1, Xinyang Liu, PhD1, William Plishker, PhD1, David A Geller, MD2, Timothy D Kane1, MD, Raj Shekhar, PhD1. 1Children’s National Health System, 2University of Pittsburgh Medical Center

Objective: Ablation needle placement is the critical step in laparoscopic ablation of unresectable liver tumors. Even to skilled surgeons, it can be difficult to correspond the three dimensional surgical field of view with the two dimensional laparoscopic ultrasound image. This leads to prolonged operative time as well as increased needle punctures into the liver due to off-target trajectory. A way to improve needle placement would be through augmented reality (AR) by overlaying the ultrasound image onto the live laparoscopic video while also providing a needle trajectory in the video. In this study, we developed and tested an AR guidance system for needle placement that could be used during laparoscopic liver ablations.

Methods: The AR guidance system overlays real-time laparoscopic ultrasound image (LUS) onto live laparoscopic video while providing a trajectory for needle guidance all on a single screen. This system utilizes an electromagnetic (EM) tabletop field generator for 3D location tracking of the LUS transducer and the laparoscope. Tracking of the radiofrequency ablation needle (2-mm diameter, 25-cm cannula length) is achieved by a mechanical mount with an embedded EM sensor that is attached to the needle handle. With an off-field computer, the system compiles the location and orientation of the LUS, laparoscope, and needle tip and builds the overlay for AR . A live laparoscopic video is then presented with augmented reality, showing the ultrasound image with a needle trajectory projected from the axis of the needle tip. The guidance overlay targets the point of intersection between the ultrasound plane and the needle axis, allowing the surgeon to aim for a lesion visualized under the ultrasound probe (Figure 1). The application of this system was evaluated with a gel-phantom containing targetable lesions under ultrasound. Targeting was performed with and without AR guidance. The accuracy or registration of the needle placement (distance between needle tip and lesion) and time needed for placement were measured.  

Results: The AR guidance system was tested by the first author (L.L.), a third-year surgical resident. Needle targeting was performed on six targets, three with AR and three without (i.e., the conventional approach), with lesion locations blinded to the user. On average, difference in needle tip position and actual target location was 4.9 mm for the conventional approach, whereas for the AR approach was 5.0 mm. The averaged time needed for needle placement was 59 s by the conventional method, while, with AR guidance, the timing was 24 s.

Conclusion: This AR system could be beneficial to guide needle placement during laparoscopic liver ablations. Our early experience shows the applicability of this system to reduce time needed for needle placement in lesion targeting. The targeting accuracy was similar with either technique but AR decreased targeting time by over 50%. While more testing is needed and planned, compared to the conventional approach, we anticipate the AR system will improve the efficiency of liver lesion ablation while achieving similar therapeutic outcomes.

Figure 1. A snapshot of laparoscopic video showing the AR overlay with LUS image and the radiofrequency ablation needle trajectory.

Figure 1. A snapshot of laparoscopic video showing the AR overlay with LUS image and the radiofrequency ablation needle trajectory.


Presented at the SAGES 2017 Annual Meeting in Houston, TX.

Abstract ID: 98920

Program Number: ETP771

Presentation Session: Emerging Technology Poster Session (Non CME)

Presentation Type: Poster

View this Poster

114

Share this:

  • Twitter
  • Facebook
  • LinkedIn
  • Pinterest
  • WhatsApp
  • Reddit

Related

« Return to SAGES 2019 abstract archive

Our Mission

Innovate, educate and collaborate to improve patient care.

Recently, on SAGES…

Critical View of Safety (CVS) Challenge QR Code

The SAGES Critical View of Safety Challenge – Donate Your Lap Chole Videos!

The Society of American Gastrointestinal and Endoscopic Surgeons is hosting the first Artificial Intelligence Data Challenge conducted by surgeons. The aim of this challenge is to generate a large and diverse dataset of laparoscopic cholecystectomy videos, annotated with respect to the subcomponents of the Critical View of Safety (CVS). Computer scientists from all over the […]

Respuesta de SAGES al Estudio NordICC sobre el beneficio de las colonoscopias de detección

SAGES desea aclarar los resultados del estudio NordICC y colocarlos en contexto de los esfuerzos de varias agencias nacionales para reducir el riesgo de cáncer colorrectal – la segunda causa de muerte por cáncer más frecuente en los Estados Unidos-, mediante la promoción de la detección y tratamiento oportuno de las lesiones.

SAGES Response to NordICC Study Regarding Benefit of Screening Colonoscopies

The NordICC Study recently published in The New England Journal of Medicine and widely reported on by media outlets has raised questions regarding the benefit of screening colonoscopy in lowering the risk of colorectal cancer and cancer-related deaths among otherwise healthy and symptom-free men and women aged 55 to 64. Provocative headlines and commentaries have […]

Contact SAGES

Society of American Gastrointestinal and Endoscopic Surgeons
11300 W. Olympic Blvd Suite 600
Los Angeles, CA 90064 USA
webmaster@sages.org
Tel: (310) 437-0544

Find Us Around the Web!

  • Facebook
  • Twitter
  • YouTube

Important Links

SAGES 2023 Meeting Information

Healthy Sooner: Patient Information

SAGES Guidelines, Statements, & Standards of Practice

SAGES Manuals

 

  • taTME Study Info
  • Foundation
  • SAGES.TV
  • MyCME
  • Educational Activities

Copyright © 2023 Society of American Gastrointestinal and Endoscopic Surgeons