國家衛生研究院 NHRI:Item 3990099045/8324
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    题名: Reusable tissue-mimicking hydrogel phantoms for focused ultrasound ablation
    作者: Sun, MK;Shieh, J;Lo, CW;Chen, CS;Chen, BT;Huang, CW;Chen, WS
    贡献者: Institute of Biomedical Engineering and Nanomedicine
    摘要: The ability of N-isopropylacrylamide (NIPAM)-based hydrogel phantoms to mimic tissues with different acoustic and thermal properties under high-intensity focused ultrasound (HIFU) ablation was investigated. These phantoms were designed to model the formation of thermal lesions in tissues above the threshold temperature of protein denaturation. By adjusting the concentration of acrylic acid (AAc) in the NIPAM-based hydrogel phantoms, the cloud point (i.e., lower critical solution temperature) of the phantoms could be tailored to produce HIFU thermal lesions similar to those formed in different swine tissues in terms of size and shape. Additionally, energy thresholds for inducing transient or permanent bubbles in the phantoms during HIFU ablation were also identified to shed light on the onset of cavitation or material damage. The NIPAM-based hydrogel phantoms developed in this study possess major advantages such as transparent, reusable and tailorable properties, and are practical tools for characterizing an ablative device (or treatment) to determine its efficacy and safety.
    日期: 2015-03
    關聯: Ultrasonics Sonochemistry. 2015 Mar;23:399-405.
    Link to: http://dx.doi.org/10.1016/j.ultsonch.2014.10.008
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=1350-4177&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000347023100052
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84911930801
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