A randomized comparison of laparoscopic, flexible endoscopic, and wired and wireless magnetic cameras on ex vivo and in vivo NOTES surgical performance

Victoria C. Chang, Shou Jiang Tang, C. Paul Swain, Richard Bergs, Juan Paramo, Deborah C. Hogg, Raul Fernandez, Jeffrey A Cadeddu, Daniel J Scott

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Background. The influence of endoscopic video camera (VC) image quality on surgical performance has not been studied. Flexible endoscopes are used as substitutes for laparoscopes in natural orifice translumenal endoscopic surgery (NOTES), but their optics are originally designed for intralumenal use. Manipulable wired or wireless independent VCs might offer advantages for NOTES but are still under development. Objective. To measure the optical characteristics of 4 VC systems and to compare their impact on the performance of surgical suturing tasks. Methods. VC systems included a laparoscope (Storz 10 mm), a flexible endoscope (Olympus GIF 160), and 2 prototype deployable cameras (magnetic anchoring and guidance system [MAGS] Camera and PillCam). In a randomized fashion, the 4 systems were evaluated regarding standardized optical characteristics and surgical manipulations of previously validated ex vivo (fundamentals of laparoscopic surgery model) and in vivo (live porcine Nissen model) tasks; objective metrics (time and errors/precision) and combined surgeon (n = 2) performance were recorded. Results. Subtle differences were detected for color tests, and field of view was variable (65 -115 ). Suitable resolution was detected up to 10 cm for the laparoscope and MAGS camera but only at closer distances for the endoscope and PillCam. Compared with the laparoscope, surgical suturing performances were modestly lower for the MAGS camera and significantly lower for the endoscope (ex vivo) and PillCam (ex vivo and in vivo). Conclusions. This study documented distinct differences in VC systems that may be used for NOTES in terms of both optical characteristics and surgical performance. Additional work is warranted to optimize cameras for NOTES. Deployable systems may be especially well suited for this purpose.

Original languageEnglish (US)
Pages (from-to)395-402
Number of pages8
JournalSurgical Innovation
Volume20
Issue number4
DOIs
StatePublished - Aug 1 2013

Keywords

  • NOTES
  • camera systems
  • capsule endoscope
  • endoscopy
  • image quality
  • laparoscopy
  • magnetically anchored instruments
  • surgeon performance
  • visualization

ASJC Scopus subject areas

  • Surgery

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