A Polyvinyl Alcohol-Based Thermochromic Material for Ultrasound Therapy Phantoms.
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Date
2020-11-01ICR Author
Author
Ambrogio, S
Baêsso, RDM
Gomis, A
Rivens, I
Haar, GT
Zeqiri, B
Ramnarine, KV
Fedele, F
Miloro, P
Type
Journal Article
Metadata
Show full item recordAbstract
Temperature estimation is a fundamental step in assessment of the efficacy of thermal therapy. A thermochromic material sensitive within the temperature range 52.5°C-75°C has been developed. The material is based on polyvinyl alcohol cryogel with the addition of a commercial thermochromic ink. It is simple to manufacture, low cost, non-toxic and versatile. The thermal response of the material was evaluated using multiple methods, including immersion in a temperature-controlled water bath, a temperature-controlled heated needle and high-intensity focused ultrasound (HIFU) sonication. Changes in colour were evaluated using both RGB (red, green, blue) maps and pixel intensities. Acoustic and thermal properties of the material were measured. Thermo-acoustic simulations were run with an open-source software, and results were compared with the HIFU experiments, showing good agreement. The material has good potential for the development of ultrasound therapy phantoms.
Collections
Research team
Therapeutic Ultrasound
Language
eng
Date accepted
2020-07-31
License start date
2020-11
Citation
Ultrasound in medicine & biology, 2020, 46 (11), pp. 3135 - 3144
Publisher
ELSEVIER SCIENCE INC