Features of ultrasonic radio frequency signal in microwave ablation experiments - Details

Author：

Yang, Chunlan (Yang, Chunlan.) | Sheng, Lei (Sheng, Lei.) | Wu, Shuicai (Wu, Shuicai.) (Scholars：吴水才) | Bai, Yanping (Bai, Yanping.)

Indexed by：

EI Scopus

Abstract：

The　main　purpose　of　this　paper　was　to　validate　whether　the　method　using　features　of　ultrasonic　radio　frequency　signal　(URFS)　is　effective　for　non-invasive　monitoring　in　microwave　ablation.　A　total　of　15　fresh　in　vitro　porcine　livers　were　experimented.　Features　of　amplitude　integral,　energy,　sum　of　absolute　value　of　difference　(SAD)　integral,　time-shift　and　attenuation　coefficient　of　URFS　were　extracted.　Changing　rules　of　these　features　and　the　relationships　between　time-shift,　attenuation　coefficient　and　tissue　temperature　were　analyzed.　Experimental　results　showed　that　maximums　of　amplitude　integral,　energy　and　SAD　integral　occur　at　the　temperature　within　50-60°C.　In　addition,　there　was　a　linear　relationship　between　time-shift　and　tissue　temperature　within　60°C　and　the　ultrasonic　attenuation　coefficient　increased　with　the　temperature　rising.　Therefore,　features　of　URFS　can　reflect　the　change　of　tissue　property　and　may　be　used　in　the　non-invasive　monitoring　of　microwave　ablation　in　the　future.　©　2011　IEEE.

Keyword：

Microwaves Tissue engineering Ablation Electromagnetic field measurement Tissue Radio waves

Author Community：

[ 1 ] [Yang, Chunlan]College of Life Science and Bioengineering, Beijing University of Technology, Beijing, China
[ 2 ] [Sheng, Lei]College of Life Science and Bioengineering, Beijing University of Technology, Beijing, China
[ 3 ] [Wu, Shuicai]College of Life Science and Bioengineering, Beijing University of Technology, Beijing, China
[ 4 ] [Bai, Yanping]College of Life Science and Bioengineering, Beijing University of Technology, Beijing, China