Development of a laparoscope with multi-resolution foveation capability for minimally invasive surgery

Yi Qin, Hong Hua, Mike Nguyen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Laparoscope is the essential tool for minimally invasive surgery (MIS) within the abdominal cavity. However, the focal length of a conventional laparoscope is fixed. Therefore, it suffers from the tradeoff between field of view (FOV) and spatial resolution. In order to obtain large optical magnification to see more details, a conventional laparoscope is usually designed with a small working distance, typically less than 50mm. Such a small working distance limits the field of coverage, which causes the situational awareness challenge during the laparoscopic surgery. We developed a multi-resolution foveated laparoscope (MRFL) aiming to address this limitation. The MRFL was designed to support a large working distance range from 80mm to 180mm. It is able to simultaneously provide both wide-angle overview and high-resolution image of the surgical field in real time within a fully integrated system. The high-resolution imaging probe can automatically scan and engage to any subfield of the wide-angle view. During the surgery, MRFL does not need to move; therefore it can reduce the instruments conflicts. The FOV of the wide-angle imaging probe is 80° and that of the high-resolution imaging probe is 26.6°. The maximum resolution is about 45um in the object space at an 80mm working distance, which is about 5 times as good as a conventional laparoscope at a 50mm working distance. The prototype can realize an equivalent 10 million-pixel resolution by using only two HD cameras because of its foveation capability. It saves the bandwidth and improves the frame rate compared to the use of a super resolution camera. It has great potential to aid safety and accuracy of the laparoscopic surgery.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume8573
DOIs
StatePublished - 2013
EventDesign and Quality for Biomedical Technologies VI - San Francisco, CA, United States
Duration: Feb 2 2013Feb 3 2013

Other

OtherDesign and Quality for Biomedical Technologies VI
CountryUnited States
CitySan Francisco, CA
Period2/2/132/3/13

Fingerprint

Laparoscopy
Laparoscopes
Minimally Invasive Surgical Procedures
surgery
Surgery
field of view
probes
high resolution
Imaging techniques
cameras
situational awareness
Cameras
tradeoffs
magnification
Abdominal Cavity
Image resolution
safety
spatial resolution
pixels
prototypes

Keywords

  • foveated imaging system
  • hybrid diffractive-refractive
  • multiple resolution

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

Cite this

Qin, Y., Hua, H., & Nguyen, M. (2013). Development of a laparoscope with multi-resolution foveation capability for minimally invasive surgery. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 8573). [857309] https://doi.org/10.1117/12.2005180

Development of a laparoscope with multi-resolution foveation capability for minimally invasive surgery. / Qin, Yi; Hua, Hong; Nguyen, Mike.

Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 8573 2013. 857309.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Qin, Y, Hua, H & Nguyen, M 2013, Development of a laparoscope with multi-resolution foveation capability for minimally invasive surgery. in Progress in Biomedical Optics and Imaging - Proceedings of SPIE. vol. 8573, 857309, Design and Quality for Biomedical Technologies VI, San Francisco, CA, United States, 2/2/13. https://doi.org/10.1117/12.2005180
Qin Y, Hua H, Nguyen M. Development of a laparoscope with multi-resolution foveation capability for minimally invasive surgery. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 8573. 2013. 857309 https://doi.org/10.1117/12.2005180
Qin, Yi ; Hua, Hong ; Nguyen, Mike. / Development of a laparoscope with multi-resolution foveation capability for minimally invasive surgery. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 8573 2013.
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