Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Calibrated electro-optic E-field sensors for hyperthermia applications.

J Berger1, K Petermann, H Fähling

  • 1Technical University Berlin, Department of Radio Frequency Engineering, Germany.

Physics in Medicine and Biology
|March 7, 2001
PubMed
Summary

Accurate electric field (E-field) measurements are crucial for hyperthermia treatments. Lithium niobate (LiNbO3) optical sensors are best for measuring weak fields, unlike infrared emitting diode (IRED) and light bulb sensors.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Inductive heating of ferrimagnetic particles and magnetic fluids: physical evaluation of their potential for hyperthermia. 1993.

International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·2009
Same author

Comparison of MR-thermography and planning calculations in phantoms.

Medical physics·2006
Same author

Methods and potentials of magnetic resonance imaging for monitoring radiofrequency hyperthermia in a hybrid system.

International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·2005
Same author

[Part-body hyperthermia with a radiofrequency multiantenna applicator under online control in a 1.5 T MR-tomograph].

RoFo : Fortschritte auf dem Gebiete der Rontgenstrahlen und der Nuklearmedizin·2004
Same author

Performance and use of current sheet antennae for RF-hyperthermia of a phantom monitored by 3 tesla MR-thermography.

International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group·2002
Same author

Antenna arrays in the SIGMA-eye applicator: interactions and transforming networks.

Medical physics·2001

Area of Science:

  • Biomedical Engineering
  • Electromagnetics
  • Medical Physics

Background:

  • Accurate electric field (E-field) measurements are vital for developing and controlling hyperthermia applicators used in cancer treatment.
  • Optical E-field sensors offer non-perturbing measurement capabilities, essential for sensitive near-field applications.

Purpose of the Study:

  • To evaluate and compare the performance of different optical E-field sensors for hyperthermia applications.
  • To establish a calibration method for assessing sensor accuracy in near-field conditions.

Main Methods:

  • Construction of a calibration cell utilizing transverse electromagnetic (TEM) waves.
  • Measurement of calibration curves and directional patterns for LiNbO3, infrared emitting diode (IRED), and light bulb sensors.

Related Experiment Videos

  • Assessment of sensor performance in detecting weak E-fields relevant to hyperthermia treatment.

    • Main Results:

    • All tested optical sensors (LiNbO3, IRED, light bulb) were calibrated using the TEM cell.
    • LiNbO3 sensors demonstrated superior capability in measuring weak E-fields.
    • IRED and light bulb sensors exhibited threshold behavior, limiting their utility for weak field detection.

    Conclusions:

    • Lithium niobate (LiNbO3) based optical E-field sensors are most suitable for precise measurements within hyperthermia applicators and phantoms.
    • The developed TEM cell provides a reliable method for calibrating and characterizing optical E-field sensors.
    • Sensor selection is critical for accurate E-field monitoring in hyperthermia, with LiNbO3 offering the best performance for weak field detection.