Safety Evaluation of a Forward-Viewing Intravascular Transducer for Sonothrombolysis: An in Vitro and ex Vivo Study.

Safety Evaluation of a Forward-Viewing Intravascular Transducer for Sonothrombolysis: An in Vitro and ex Vivo Study.
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DOI:
10.1016/j.ultrasmedbio.2021.07.018
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发表时间:
2021-11
影响因子:
2.9
通讯作者:
Jiang X
Jiang X
中科院分区:
医学3区
文献类型:
--
作者:
Goel L;Wu H;Zhang B;Kim J;Dayton PA;Xu Z;Jiang X

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Recent in-vitro work has demonstrated that a forward-viewing intravascular (FVI) transducer can be applied for sonothrombolysis applications. However, the safety of this device has yet to be evaluated. In this study, we evaluated the safety of this device in terms of tissue heating, vessel damage, and particle debris size during sonothrombolysis using microbubbles or nanodroplets with tissue plasminogen activator (tPA), in both retracted and unretracted blood clots. The in-vitro and ex-vivo sonothrombolysis tests using FVI transducers showed temperature rise of less than 1°C, no vessel damage as assessed by histology, and no downstream clot particles greater than 500μm. These in vitro and ex-vivo results indicate that the FVI transducer poses minimal risk for sonothrombolysis applications, and should be further evaluated in animal models.
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