MR temperature monitoring for MR-RF hyperthermia - A systems-level approach

D. T B Yeo, M. Tarasek, T. Drizdal, E. Fiveland, M. M. Paulides, T. K. Foo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Non-invasive high-resolution 3D MR temperature maps can significantly improve dosimetry during thermal dose delivery in hyperthermic oncology. However, with long treatment times, system- and patient-induced drift in the B0 main magnetic field of the MR scanner may adversely impact the accuracy of temperature measurements. In addition, the insertion of conventional RF hyperthermia apparatus into an MR scanner obstructs the use of commercial MR receive coil arrays in the scanner bore. If they had been available for use, such receive arrays could potentially increase imaging signal-to-noise ratio (SNR) and/or temporal resolution of MR thermometry. Here, we describe a systems-level perspective of improving temperature monitoring in MR-RF hyperthermia. This approach includes a previously developed fat-referenced MR thermometry technique, and a dual-function coil array design that addresses the limitations in imaging SNR and temporal resolution that are inherent in conventional MR-guided RF hyperthermia systems. We will also discuss system-level considerations that can adversely impact MRT measurements when integrating a RF hyperthermia sub-system with a MRI system.

Original languageEnglish (US)
Title of host publication8th European Conference on Antennas and Propagation, EuCAP 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1660-1663
Number of pages4
ISBN (Print)9788890701849
DOIs
StatePublished - 2014
Externally publishedYes
Event8th European Conference on Antennas and Propagation, EuCAP 2014 - The Hague, Netherlands
Duration: Apr 6 2014Apr 11 2014

Other

Other8th European Conference on Antennas and Propagation, EuCAP 2014
CountryNetherlands
CityThe Hague
Period4/6/144/11/14

Keywords

  • MR thermometry
  • RF hyperthermia
  • SAR

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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