Image Fusion in the OR

  • End date
    Sep 28, 2023
  • participants needed
  • sponsor
    Raj Shekhar
Updated on 4 March 2021


The objective of this study is to test the technical feasibility of LapAR visualization system for guiding laparoscopic surgeries and to gather clinical feedback on the use of this tool.


Surgeons use real-time video generated by a laparoscope to visualize the operative field when performing laparoscopic procedures. An inability to see beneath organ surfaces is a limitation of the current visualization technology. Surgeons additionally use laparoscopic ultrasound to see beneath organ surfaces, but also need to mentally correlate the ultrasound image with the video of the operative field. This process is difficult, subjective, and variable with expertise, and discourages the use of ultrasound.

We have developed a method to combine live laparoscopic video and laparoscopic ultrasound images to present fused multimodality images on a single display, eliminating the need for mental image correlation. Specifically, the image fusion method, called laparoscopic augmented reality (LapAR), augments the laparoscopic video with ultrasound data when required by surgeons. This study is designed to test this minimal-risk capability in patients referred for relevant laparoscopic procedures.

Treatment LapAR
Clinical Study IdentifierNCT03670849
SponsorRaj Shekhar
Last Modified on4 March 2021


Yes No Not Sure

Inclusion Criteria

Referred for laparoscopic surgery of the hepatobiliary system
Clinical indication for the use of laparoscopic ultrasound
Patient or an authorized guardian provides written consent

Exclusion Criteria

Patients with pacemaker or any other ICD (intra-cardiac device) which may
interfere with electromagnetic tracking
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