New visualization strategy to study the dynamics of surgical coagulation devices in biological tissue using absolute subsurface thermal imaging

Stefan L. Been; Rudolf M. Verdaasdonk; John H. G. M. Klaessens

doi:10.1117/12.875722

22 February 2011 New visualization strategy to study the dynamics of surgical coagulation devices in biological tissue using absolute subsurface thermal imaging

Stefan L. Been, Rudolf M. Verdaasdonk, John H. G. M. Klaessens

Author Affiliations +

Proceedings Volume 7901, Energy-based Treatment of Tissue and Assessment VI; 790111 (2011) https://doi.org/10.1117/12.875722
Event: SPIE BiOS, 2011, San Francisco, California, United States

Abstract

Visualisation of the thermo dynamics of surgical coagulation devices like laser, diathermy and RFA devices in tissue are essential to get better understanding about the principles of operation of these devices. Thermo cameras have the ability to measure absolute temperatures. However, the visualization of temperature fields using thermal imaging has always been limited to the surface of a medium. We have developed a new strategy to look below the surface of biological tissue by viewing through a ZincSelenide window positioned alongside a block of tissue. When exposed from above with an energy source, the temperature distribution below the surface can be observed through the window. To obtain a close-up view, the thermo camera is enhanced with special macro optics. The thermo dynamics during tissue interaction of various electro surgery modes was studied in biological tissues to obtain a better understanding of the working mechanism. Simultaneously with thermal imaging, normal close-up video footage was obtained to support the interpretation of the thermal imaging. For comparison, temperature gradients were imaged inside a transparent tissue model using color Schlieren imaging. The new subsurface thermal imaging method gives a better understanding of interaction of thermal energy of surgical devices and contributes to the safety and the optimal settings for various medical applications. However, the technique has some limitations that have to be considered. The three imaging modalities showed to be both compatible and complementary showing the pro- and cons- of each modality.

Citation Download Citation

Stefan L. Been, Rudolf M. Verdaasdonk, and John H. G. M. Klaessens "New visualization strategy to study the dynamics of surgical coagulation devices in biological tissue using absolute subsurface thermal imaging", Proc. SPIE 7901, Energy-based Treatment of Tissue and Assessment VI, 790111 (22 February 2011); https://doi.org/10.1117/12.875722

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Tissues

Thermography

Cameras

Natural surfaces

Visualization

Temperature metrology

Tissue optics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years