A review of antenna designs for percutaneous microwave ablation |
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| Affiliation: | 1. Institute for Diagnostic and Interventional Radiology, Johann Wolfgang Goethe – University Hospital, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany;2. Institute for Microwave Engineering and Photonics, Technische Universität Darmstadt, Merckstrasse 25, 64283 Darmstadt, Germany;1. ENEA, Division of Health Protection Technologies, Casaccia Research Centre, Rome, Italy;2. DIET, Sapienza University of Rome, Rome, Italy |
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| Abstract: | Microwave (MW) antenna is a key element in microwave ablation (MWA) treatments as the means that energy is delivered in a focused manner to the tumor and its surrounding area. The energy delivered results in a rise in temperature to a lethal level, resulting in cell death in the ablation zone. The delivery of energy and hence the success of MWA is closely dependent on the structure of the antennas. Therefore, three design criteria, such as expected ablation zone pattern, efficiency of energy delivery, and minimization of the diameter of the antennas have been the focus along the evolution of the MW antenna. To further improve the performance of MWA in the treatment of various tumors through inventing novel antennas, this article reviews the state-of-the-art and summarizes the development of MW antenna designs regarding the three design criteria. |
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| Keywords: | Microwave ablation Microwave antenna Antenna design Backward heating Tumor ablation |
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