Dual-antenna applicator for hyperthermia of tumours at intermediate depth

L. B. Leybovich; B. Emami; R. J. Myerson; W. L. Straube; V. Sathiaseelan

doi:10.3109/02656739109005010

Dual-antenna applicator for hyperthermia of tumours at intermediate depth

L. B. Leybovich^*, B. Emami, R. J. Myerson, W. L. Straube, V. Sathiaseelan

^*Corresponding author for this work

Radiation Oncology

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

A dual-antenna applicator with 21 ±26 cm ² aperture, that is fully loaded and operates at 74 MHz, was developed at the Mallinckrodt Institute of Radiology. By placing two antennas into an applicator capable of propagating TE ₁₀ mode, a significant enlargement of heating pattern was achieved without an increase in applicator dimensions. When antennas are placed symmetrically about a parallel to the antenna axis of symmetry, the sensitivity of the applicator input impedance to variations of load impedance reduces. Stable coupling of the RF power to the treatment area may be provided. Twenty patients with eccentrically located tumours were treated using this device.

Original language	English (US)
Pages (from-to)	455-464
Number of pages	10
Journal	International Journal of Hyperthermia
Volume	7
Issue number	3
DOIs	https://doi.org/10.3109/02656739109005010
State	Published - Jan 1 1991

Keywords

Applicator
Coupling
Electromagnetic
Penetration

ASJC Scopus subject areas

Physiology
Physiology (medical)
Cancer Research

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title = "Dual-antenna applicator for hyperthermia of tumours at intermediate depth",

abstract = " A dual-antenna applicator with 21 ±26 cm 2 aperture, that is fully loaded and operates at 74 MHz, was developed at the Mallinckrodt Institute of Radiology. By placing two antennas into an applicator capable of propagating TE 10 mode, a significant enlargement of heating pattern was achieved without an increase in applicator dimensions. When antennas are placed symmetrically about a parallel to the antenna axis of symmetry, the sensitivity of the applicator input impedance to variations of load impedance reduces. Stable coupling of the RF power to the treatment area may be provided. Twenty patients with eccentrically located tumours were treated using this device.",

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AU - Emami, B.

AU - Myerson, R. J.

AU - Straube, W. L.

AU - Sathiaseelan, V.

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N2 - A dual-antenna applicator with 21 ±26 cm 2 aperture, that is fully loaded and operates at 74 MHz, was developed at the Mallinckrodt Institute of Radiology. By placing two antennas into an applicator capable of propagating TE 10 mode, a significant enlargement of heating pattern was achieved without an increase in applicator dimensions. When antennas are placed symmetrically about a parallel to the antenna axis of symmetry, the sensitivity of the applicator input impedance to variations of load impedance reduces. Stable coupling of the RF power to the treatment area may be provided. Twenty patients with eccentrically located tumours were treated using this device.

AB - A dual-antenna applicator with 21 ±26 cm 2 aperture, that is fully loaded and operates at 74 MHz, was developed at the Mallinckrodt Institute of Radiology. By placing two antennas into an applicator capable of propagating TE 10 mode, a significant enlargement of heating pattern was achieved without an increase in applicator dimensions. When antennas are placed symmetrically about a parallel to the antenna axis of symmetry, the sensitivity of the applicator input impedance to variations of load impedance reduces. Stable coupling of the RF power to the treatment area may be provided. Twenty patients with eccentrically located tumours were treated using this device.

KW - Applicator

KW - Coupling

KW - Electromagnetic

KW - Penetration

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