title: Towards scarless surgery: an endoscopic-ultrasound navigation system for transgastric access procedures.
abstract: Scarless surgery is a new and very promising technique that can mark a new era in surgical procedures. We have created and validated a navigation system for endoscopic and transgastric access interventions in in vivo pilot studies. The system provides augmented visual feedback and additional contextual information by establishing a correspondence between the real time endoscopic ultrasound image and a preoperative CT volume using rigid registration. The system enhances the operator's ability to interpret the ultrasound image reducing the mental burden used in probe placement. Our analysis shows that rigid registration is accurate enough to help physicians in endoscopic abdominal surgery where, by using preoperative data for context and real-time imaging for targeting, distortions that limit the use of only preoperative data can be overcome.
authors.affiliation: Brigham and Women's Hospital, Boston, MA, USA. rjosest@bwh.harvard.edu
authors.forename: Raúl
authors.initials: R
authors.lastname: San José Estépar
authors.forename: Nicholas
authors.initials: N
authors.lastname: Stylopoulos
authors.forename: Randy E
authors.initials: RE
authors.lastname: Ellis
authors.forename: Eigil
authors.initials: E
authors.lastname: Samset
authors.forename: Carl-Fredrik
authors.initials: CF
authors.lastname: Westin
authors.forename: Christopher
authors.initials: C
authors.lastname: Thompson
authors.forename: Kirby
authors.initials: K
authors.lastname: Vosburgh
mesh_terms: D002921:Cicatrix / Q000517:prevention & control; D016099:Endoscopy, Gastrointestinal / Q000379:methods*; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D011859:Radiography; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013270:Stomach / Q000000981:diagnostic imaging* / Q000601:surgery*; D013382:Subtraction Technique; D025321:Surgery, Computer-Assisted / Q000379:methods*; D018084:Ultrasonography, Interventional / Q000379:methods*