A Novel Ultrasound-Based Registration for Image-Guided Laparoscopic Liver Ablation. (August 2016)

• Record Type: Journal Article
• Authors: Fusaglia, Matteo; Tinguely, Pascale; Banz, Vanessa; Weber, Stefan; Lu, Huanxiang
• Is Part Of: Surgical innovation. Volume 23:Number 4(2016:Aug.)
• Page Start: 397
• Page End: 406
• Publication Date: 2016-08
• Subjects: image guidance -- laparoscopic ablation -- liver -- registration; Surgery, Operative -- Periodicals; Endoscopic surgery -- Periodicals; Laparoscopic surgery -- Periodicals; Surgical Procedures, Operative -- Periodicals; Surgical Procedures, Minimally Invasive -- Periodicals; Diffusion of Innovation -- Periodicals; Chirurgie opératoire -- Périodiques; Chirurgie endoscopique -- Périodiques; Chirurgie laparoscopique -- Périodiques; 617.91
• DOI: 10.1177/1553350616637691
• Languages: English
• ISSNs: 1553-3506

Abstract

Background . Patient-to-image registration is a core process of image-guided surgery (IGS) systems. We present a novel registration approach for application in laparoscopic liver surgery, which reconstructs in real time an intraoperative volume of the underlying intrahepatic vessels through an ultrasound (US) sweep process. Methods . An existing IGS system for an open liver procedure was adapted, with suitable instrument tracking for laparoscopic equipment. Registration accuracy was evaluated on a realistic phantom by computing the target registration error (TRE) for 5 intrahepatic tumors. The registration work flow was evaluated by computing the time required for performing the registration. Additionally, a scheme for intraoperative accuracy assessment by visual overlay of the US image with preoperative image data was evaluated. Results . The proposed registration method achieved an average TRE of 7.2 mm in the left lobe and 9.7 mm in the right lobe. The average time required for performing the registration was 12 minutes. A positive correlation was found between the intraoperative accuracy assessment and the obtained TREs. Conclusions . The registration accuracy of the proposed method is adequate for laparoscopic intrahepatic tumor targeting. The presented approach is feasible and fast and may, therefore, not be disruptive to the current surgical work flow.