학술논문
Integrated temperature sensor for determination of ultrasound interstitial applicator heating effects
Document Type
Periodical
Author
Source
IEEE Transactions on Instrumentation and Measurement IEEE Trans. Instrum. Meas. Instrumentation and Measurement, IEEE Transactions on. 54(3):1171-1174 Jun, 2005
Subject
Language
ISSN
0018-9456
1557-9662
1557-9662
Abstract
We discuss the feasibility of temperature determination with an integrated sensor in ultrasound (US) interstitial heating. The sensor, a 230-/spl mu/m diameter microthermistor, was epoxied at the tip of the 1.22-mm diameter antenna of the US waveguide applicator. Incorporation of the sensor into the applicator caused about 10% drop in the acoustic output. While the temperatures read with the integrated sensor were much higher compared to microthermistors around the antenna, the shape of the heating curves was very similar. Measurements show that the volume temperature can be inferred from the readings of the integrated sensor using short, 1.5-min interruptions in delivered US power.