Scheduled System Maintenance:
Some services will be unavailable Sunday, March 29th through Monday, March 30th. We apologize for the inconvenience.
By Topic

Design of Noncontact Tumor Imager for Video-Assisted Thoracic Surgery

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Kawahara, T. ; Grad. Sch. of Biomed. Sci., Hiroshima Univ. Hosp., Hiroshima, Japan ; Miyata, Y. ; Akayama, K. ; Okajima, M.
more authors

In video-assisted thoracic surgery (VATS), a surgeon cannot easily detect a lung tumor during surgical operation. This paper discusses a noncontact tumor imager capable of detecting a tumor position for application during VATS; this sensor is based on the phase differential technique. The developed sensor comprises an air supply system and an optical-fiber-based displacement sensor adjacent to the air nozzle. For a periodic air pressure, a displacement sensor provides sinusoidal outputs with individual phases. The phase difference varies according to the change in the mechanical impedance parameters of tissues between two points. We confirmed the validity of the sensor for the removed human lung through basic experiments. With regard to clinical applications, both the tumor detection capability and the safety to lung tissues of the developed sensor were confirmed through in vivo animal experiments using pig lungs. Finally, the sensor system was developed for clinical tests and the results of the clinical experiments are shown.

Published in:

Mechatronics, IEEE/ASME Transactions on  (Volume:15 ,  Issue: 6 )