Feasibility study of utilizing ultraportable projectors for endoscopic video display (With Videos)

Shou Jiang Tang, Amanda Fehring, Mac McLemore, Michael Griswold, Wanmei Wang, Elizabeth R. Paine, Ruonan Wu, Filip To

Research output: Contribution to journalArticlepeer-review


Background. Modern endoscopy requires video display. Recent miniaturized, ultraportable projectors are affordable, durable, and offer quality image display. Objective. Explore feasibility of using ultraportable projectors in endoscopy. Methods. Prospective bench-top comparison; clinical feasibility study. Masked comparison study of images displayed via 2 Samsung ultraportable light-emitting diode projectors (pocket-sized SP-HO3; pico projector SP-P410M) and 1 Microvision Showwx-II Laser pico projector. Bench-top feasibility study: Prerecorded endoscopic video was streamed via computer. Clinical comparison study: Live high-definition endoscopy video was simultaneously displayed through each processor onto a standard liquid crystal display monitor and projected onto a portable, pull-down projection screen. Endoscopists, endoscopy nurses, and technicians rated video images; ratings were analyzed by linear mixed-effects regression models with random intercepts. Results. All projectors were easy to set up, adjust, focus, and operate, with no real-time lapse for any. Bench-top study outcomes: Samsung pico preferred to Laser pico, overall rating 1.5 units higher (95% confidence interval [CI] = 0.7-2.4), P

Original languageEnglish (US)
Pages (from-to)513-519
Number of pages7
JournalSurgical Innovation
Issue number5
StatePublished - Oct 1 2014
Externally publishedYes


  • ergonomics and/or human factors study
  • flexible endoscopy
  • interventional endoscopy

ASJC Scopus subject areas

  • Surgery
  • Medicine(all)


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