Characterization and in-vivo evaluation of a multi-resolution foveated laparoscope for minimally invasive surgery

Yi Qin, Hong Hua, Mike Nguyen

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


The state-of-the-art laparoscope lacks the ability to capture highmagnification and wide-angle images simultaneously, which introduces challenges when both close- up views for details and wide-angle overviews for orientation are required in clinical practice. A multi-resolution foveated laparoscope (MRFL) which can provide the surgeon both highmagnification close-up and wide-angle images was proposed to address the limitations of the state-of-art surgical laparoscopes. In this paper, we present the overall system design from both clinical and optical system perspectives along with a set of experiments to characterize the optical performances of our prototype system and describe our preliminary in-vivo evaluation of the prototype with a pig model. The experimental results demonstrate that at the optimum working distance of 120mm, the highmagnification probe has a resolution of 6.35lp/mm and image a surgical area of 53 × 40mm2; the wide-angle probe provides a surgical area coverage of 160 × 120mm2 with a resolution of 2.83lp/mm. The in-vivo evaluation demonstrates that MRFLhas great potential in clinical applications for improving the safety and efficiency of the laparoscopic surgery.

Original languageEnglish (US)
Pages (from-to)2548-2562
Number of pages15
JournalBiomedical Optics Express
Issue number8
StatePublished - Aug 1 2014

ASJC Scopus subject areas

  • Biotechnology
  • Atomic and Molecular Physics, and Optics


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