A Polyvinyl Alcohol-Based Thermochromic Material for Ultrasound Therapy Phantoms.
High-intensity focused ultrasound
Phantom
Quality assurance
Thermal ablation
Thermochromic material
Journal
Ultrasound in medicine & biology
ISSN: 1879-291X
Titre abrégé: Ultrasound Med Biol
Pays: England
ID NLM: 0410553
Informations de publication
Date de publication:
11 2020
11 2020
Historique:
received:
01
06
2020
revised:
27
07
2020
accepted:
31
07
2020
pubmed:
3
9
2020
medline:
27
8
2021
entrez:
3
9
2020
Statut:
ppublish
Résumé
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.
Identifiants
pubmed: 32873445
pii: S0301-5629(20)30347-1
doi: 10.1016/j.ultrasmedbio.2020.07.032
pii:
doi:
Substances chimiques
Polyvinyl Alcohol
9002-89-5
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
3135-3144Informations de copyright
Copyright © 2020 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved.
Déclaration de conflit d'intérêts
Conflict of interest disclosure The authors declare no competing interests.