CST – Computer Simulation Technology

Title:
A MINIMALLY INVASIVE MICROWAVE HYPERTHERMIC APPLICATOR WITH AN INTEGRATED TEMPERATURE SENSOR
Author(s):
Guido Biffi Gentili, Mariano Linari
Source:
BIODEVICES 2008 - International Conference on Biomedical Electronics and Devices
Vol./Issue/Date:
1st January 0001
Year:
2008
Page(s):
113-118
Keywords:
Interstitial microwave applicator, endocavitary, hyperthermia, temperature sensor
Abstract:
In the field of microwave hyperthermia and thermo-ablation, the use of minimally invasive applicators is recognized as a very promising means for the treatment of small, early stage, cancer lesions because a very thin applicator can be easily introduced inside the body and precisely directed towards a deep seated tumour using the most advanced 3D imaging techniques and surgical stereo-navigation. Minimally invasive applicators have been successfully employed for the treatment of bladder carcinoma and brain tumours but the accurate temperature monitoring of the heated tissue volume still remains an open problem. In this paper we propose a new minimally invasive applicator, integrating a low-cost metallic wired temperature sensor. The miniaturised endocavitary applicator consists of a asymmetric isolated dipole operating at 2.45 GHz. The very slim shape of the applicator allows to easily insert it into the lesion through a soft plastic tube (catheter) while a temperature sensor, properly embedded in the applicator body, measures the tissue temperature at the interface with the catheter surface. An electromagnetic analysis based on the Finite Integration Technique (FIT) and experimental verifications over a tissue sample proved that a coaxial choke, enclosing the temperature sensor wires, allows localize the heating pattern in a restrict volume while drastically reducing measuring artefacts due to the perturbing effects induced by the probe leads.
Document:

Back to References

contact support

Your session has expired. Redirecting you to the login page...

We use cookie to operate this website, improve its usability, personalize your experience, and track visits. By continuing to use this site, you are consenting to use of cookies. You have the possibility to manage the parameters and choose whether to accept certain cookies while on the site. For more information, please read our updated privacy policy


Cookie Management

When you browse our website, cookies are enabled by default and data may be read or stored locally on your device. You can set your preferences below:


Functional cookies

These cookies enable additional functionality like saving preferences, allowing social interactions and analyzing usage for site optimization.


Advertising cookies

These cookies enable us and third parties to serve ads that are relevant to your interests.