Hideki Hayashi, MD, PhD1, Seiya Yokkaichi2, Masashi Okuzaki, BA3, Masahiko Ebata, BA3, Tadashi Okayama, BA3, Taro Toyota, PhD4, Hisahiro Matsubara5. 1Center for Frontier Medical Engineering, Chiba University, 2Faculty of Engineering, Chiba University, 3Graduate School of Engineering, Chiba University, 4Department of Basic Science, Graduate School of Arts and Science, The University of Tokyo, 5Department of Frontier Surgery, Graduate School of Medicine, Chiba Univrsity
Objective: To develop an intraoperative navigation system for laparoscopic liver surgeries with the use of a dual imaging tissue marker which is detectable with X-ray CT and near-infrared (NIR) fluorescence laparoscopy.
Methods: We developed a dual imaging tissue maker based on a giant vesicle formation technique with an ethiodized oil and a hydrophobic form of indocyanine green-derivative. The marker was placed at six different point on the surface of a translucent liver model containing a tumor and hepatic structures inside. We obtained voxel data of the structures and the marker with X-ray CT, and developed a program to superimpose images of the internal structures on a NIR camera images of the liver model in actual position with a real-time fashion. Usefulness of the system was tested.
Preliminary results: Manual registration of the location of the marker on the NIR camera images was still required, however, the superimposed images could keep the actual positions even with some movements of the camera.
Conclusions: Although further refinements were required, basic concept of this system was suggested to be sufficient to establish a new laparoscopic navigation system for liver surgeries.
Presented at the SAGES 2017 Annual Meeting in Houston, TX.
Abstract ID: 84402
Program Number: ETP751
Presentation Session: Emerging Technology Poster
Presentation Type: Poster