Authors
Janghoon Jeong, Won-Young Song, Kwang-Jae Lee, Seong-Ho Son
Published in
Biomedical engineering letters. Volume 16. Issue 4. Pages 1073-1080. Epub Apr 15, 2026.
Abstract
This study presents an experimentally validated dual-band focused microwave thermotherapy (FMT) system capable of operating at both 100 MHz and 434 MHz within a single phased-array platform. The proposed system features a dual-band applicator array designed to support resonant operation at widely separated frequencies, thereby enabling the treatment of tumors varying in depth and size without the need for hardware modification. A time-reversal (TR) based excitation method was employed to determine the optimal phase and amplitude weights for each channel. Experimental phantom measurements demonstrated accurate field convergence at both frequencies, with focal spot sizes and positioning errors consistent with fundamental electromagnetic diffraction limits. Specifically, the 100 MHz band produced a broad focal region suitable for deep-seated targets, whereas the 434 MHz band generated a compact focus appropriate for high-resolution targeting at shallower depths. These results indicate that the proposed dual-band system offers enhanced adaptability compared to conventional single-band hyperthermia devices, providing a promising platform for future patient-specific cancer treatment.
PMID:
42603945
Bibliographic data and abstract were imported from PubMed on 16 Aug 2026.
Read full publication at:
Please sign in
to see all details.
Advertisement
Stats
- Recommendations n/a n/a positive of 0 vote(s)
- Views 5
- Comments 0