Dosimetry of Exposure to Electromagnetic Fields in Daily Life and Medical Applications

textabstractElectromagnetic fields (EMF) are present everywhere in our environment but are usually invisible to the human eye. EMF for example generated by mobile phones and 50Hz power lines, can cause electric fields, currents and tissue heating in the human body. In the past, exposure limits were developed to avoid adverse health effects. These limits were derived from dose assessments using simple models which for example approximate the human by homogeneous spheroids. Nowadays, state-of-the-art electromagnetic models enable to predict and visualize the propagation of electromagnetic waves in the human anatomy. These models can provide detailed information on the exposure of the general public in daily life situations and those of patients and staff in medical applications such as hyperthermia treatments of cancer and Magnetic Resonance Imaging (MRI). In this thesis, a comprehensive assessment of the exposure to different EMF sources is provided for both children and adults. An evaluation is made how the guidelines, based on simple models, translate to the dose in complex anatomies in various population groups. Further, it is demonstrated that validated electromagnetic models can be used for the benefit of medical applications, by providing the medical staff a clear picture of the actual applied dose in patients and by efficient virtual prototyping of improved medical devices.

[1]  A. Bahr,et al.  NUMERICAL DOSIMETRY ELF: ACCURACY OF THE METHOD, VARIABILITY OF MODELS AND PARAMETERS, AND THE IMPLICATION FOR QUANTIFYING GUIDELINES , 2007, Health physics.

[2]  P. Dimbylow,et al.  SAR calculations from 20 MHz to 6 GHz in the University of Florida newborn voxel phantom and their implications for dosimetry. , 2010, Physics in medicine and biology.

[3]  MEDICAL MAGNETIC RESONANCE (MR) PROCEDURES: PROTECTION OF PATIENTS , 2004, Health physics.

[4]  O.P. Gandhi,et al.  Thermal implications of the new relaxed IEEE RF safety standard for head exposures to cellular telephones at 835 and 1900 MHz , 2006, IEEE Transactions on Microwave Theory and Techniques.

[5]  J F Bakker,et al.  A literature survey on indicators for characterisation and optimisation of SAR distributions in deep hyperthermia, a plea for standardisation , 2009, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[6]  Vasily L Yarnykh,et al.  Actual flip‐angle imaging in the pulsed steady state: A method for rapid three‐dimensional mapping of the transmitted radiofrequency field , 2007, Magnetic resonance in medicine.

[7]  N. Nelson,et al.  Adjuvant and adjunctive chemotherapy in the management of squamous cell carcinoma of the head and neck region. A meta-analysis of prospective and randomized trials. , 1996, Journal of clinical oncology : official journal of the American Society of Clinical Oncology.

[8]  M. Kalos,et al.  Monte Carlo methods , 1986 .

[9]  E. Neufeld,et al.  IT’IS Database for Thermal and Electromagnetic Parameters of Biological Tissues , 2012 .

[10]  O. Gandhi,et al.  Calculation of induced current densities for humans by magnetic fields from electronic article surveillance devices. , 2001, Physics in medicine and biology.

[11]  Paul R Stauffer,et al.  Evolving technology for thermal therapy of cancer , 2005, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[12]  F. Duck Physical properties of tissue , 1990 .

[13]  M. Stuchly,et al.  Interaction of low-frequency electric and magnetic fields with the human body , 2000, Proceedings of the IEEE.

[14]  Georg Neubauer,et al.  Dielectric properties of porcine brain tissue in the transition from life to death at frequencies from 800 to 1900 MHz , 2003, Bioelectromagnetics.

[15]  Mark W. Dewhirst,et al.  Prospective thermal dosimetry: The key to hyperthermia's future , 2006, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[16]  O. Fujiwara,et al.  FDTD calculation of whole-body average SAR in adult and child models for frequencies from 30 MHz to 3 GHz , 2006, Physics in medicine and biology.

[17]  F Meyer,et al.  The influence of the reflective environment on the absorption of a human male exposed to representative base station antennas from 300 MHz to 5 GHz , 2010, Physics in medicine and biology.

[18]  >J. Gellermann,et al.  Image artifacts during MRT hybrid hyperthermia – Causes and Elimination , 2008, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[19]  J V Hajnal,et al.  Numerical study of RF exposure and the resulting temperature rise in the foetus during a magnetic resonance procedure , 2010, Physics in medicine and biology.

[20]  >Nagraj G. Huilgol A phase I study to study arsenic trioxide with radiation and hyperthermia in advanced head and neck cancer , 2006, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[21]  Earl Zastrow,et al.  3D computational study of non-invasive patient-specific microwave hyperthermia treatment of breast cancer , 2010, Physics in medicine and biology.

[22]  J J Lagendijk,et al.  A mathematical model to calculate temperature distributions in human and rabbit eyes during hyperthermic treatment. , 1982, Physics in medicine and biology.

[23]  N Siauve,et al.  Optimization of the sources in local hyperthermia using a combined finite element-genetic algorithm method , 2004, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[24]  P. Dimbylow,et al.  Whole-body-averaged SAR from 50 MHz to 4 GHz in the University of Florida child voxel phantoms , 2007, Physics in medicine and biology.

[25]  P. Dimbylow,et al.  Fine resolution calculations of SAR in the human body for frequencies up to 3 GHz. , 2002, Physics in medicine and biology.

[26]  J F Bakker,et al.  An ultrasound cylindrical phased array for deep heating in the breast: theoretical design using heterogeneous models , 2009, Physics in medicine and biology.

[27]  A. Stogryn,et al.  Equations for Calculating the Dielectric Constant of Saline Water (Correspondence) , 1971 .

[28]  J Crezee,et al.  Experimental verification of bioheat transfer theories: measurement of temperature profiles around large artificial vessels in perfused tissue. , 1990, Physics in medicine and biology.

[29]  E Neufeld,et al.  Novel conformal technique to reduce staircasing artifacts at material boundaries for FDTD modeling of the bioheat equation , 2007, Physics in medicine and biology.

[30]  O Fujiwara,et al.  Temperature elevation in the eye of anatomically based human head models for plane-wave exposures , 2007, Physics in medicine and biology.

[31]  Wout Joseph,et al.  In situ magnetic field exposure and ICNIRP-based safety distances for electronic article surveillance systems. , 2012, Radiation protection dosimetry.

[32]  Birgitta Floderus,et al.  Occupational exposures to high frequency electromagnetic fields in the intermediate range ( >300 Hz-10 MHz). , 2002, Bioelectromagnetics.

[33]  Luc Martens,et al.  Estimation of whole‐body SAR from electromagnetic fields using personal exposure meters , 2009, Bioelectromagnetics.

[34]  T. Eikelboom,et al.  Personal radiofrequency electromagnetic field measurements in The Netherlands: exposure level and variability for everyday activities, times of day and types of area. , 2012, Environment international.

[35]  R. Valdagni,et al.  Important Prognostic Factors Influencing Outcome of Combined Radiation and Hyperthermia , 1989 .

[36]  P. Dimbylow,et al.  The effects of body posture, anatomy, age and pregnancy on the calculation of induced current densities at 50 Hz. , 2010, Radiation protection dosimetry.

[37]  I. Laakso,et al.  SAR variation study from 300 to 5000 MHz for 15 voxel models including different postures , 2010, Physics in medicine and biology.

[38]  G. V. van Rhoon,et al.  An electric field measurement system, using two-dimensional array of diodes. , 1999, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[39]  Allen Taflove,et al.  Computational Electrodynamics the Finite-Difference Time-Domain Method , 1995 .

[40]  A. Salonia,et al.  Multicentric study comparing intravesical chemotherapy alone and with local microwave hyperthermia for prophylaxis of recurrence of superficial transitional cell carcinoma. , 2003, Journal of clinical oncology : official journal of the American Society of Clinical Oncology.

[41]  Margarethus M Paulides,et al.  Theoretical investigation into the feasibility to deposit RF energy centrally in the head-and-neck region. , 2005, International journal of radiation oncology, biology, physics.

[42]  P. Dimbylow Quandaries in the application of the ICNIRP low frequency basic restriction on current density , 2008, Physics in medicine and biology.

[43]  P. Dimbylow,et al.  Effects of posture on FDTD calculations of specific absorption rate in a voxel model of the human body , 2005, Physics in medicine and biology.

[44]  Soichi Watanabe,et al.  Proportion-corrected scaled voxel models for Japanese children and their application to the numerical dosimetry of specific absorption rate for frequencies from 30 MHz to 3 GHz. , 2008, Physics in medicine and biology.

[45]  B W Raaymakers,et al.  Modelling the impact of blood flow on the temperature distribution in the human eye and the orbit: fixed heat transfer coefficients versus the Pennes bioheat model versus discrete blood vessels , 2006, Physics in medicine and biology.

[46]  Luc Martens,et al.  CHARACTERIZATION OF PERSONAL RF ELECTROMAGNETIC FIELD EXPOSURE AND ACTUAL ABSORPTION FOR THE GENERAL PUBLIC , 2008, Health physics.

[47]  C. Gabriel,et al.  Dielectric properties of human placenta, umbilical cord and amniotic fluid , 2011, Physics in medicine and biology.

[48]  R. L. Seaman,et al.  In Situ Permittivity of Canine Brain: Regional Variations and Postmortem Changes , 1986 .

[49]  Selim Awad,et al.  The Electromagnetic Environment of an Automobile Electronic System , 1987, IEEE Transactions on Electromagnetic Compatibility.

[50]  E. Mantiply,et al.  Summary of measured radiofrequency electric and magnetic fields (10 kHz to 30 GHz) in the general and work environment. , 1997, Bioelectromagnetics.

[51]  P Wust,et al.  Simulation studies promote technological development of radiofrequency phased array hyperthermia. , 1996, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[52]  C. Gabriel Dielectric properties of biological tissue: Variation with age , 2005, Bioelectromagnetics.

[53]  Robert B. Roemer,et al.  A Mathematical Model of the Human Temperature Regulatory System - Transient Cold Exposure Response , 1976, IEEE Transactions on Biomedical Engineering.

[54]  Douglas A. Christensen,et al.  Basic Introduction to Bioelectromagnetics , 1999 .

[55]  Akimasa Hirata,et al.  Influence of electromagnetic polarization on the whole-body averaged SAR in children for plane-wave exposures , 2009, Physics in medicine and biology.

[56]  Niels Kuster,et al.  The Virtual Family—development of surface-based anatomical models of two adults and two children for dosimetric simulations , 2010, Physics in medicine and biology.

[57]  P. Turner,et al.  BSD-2000 approach for deep local and regional hyperthermia: clinical utility. , 1989, Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al].

[58]  In-situ electric field and current density in Japanese male and female models for uniform magnetic field exposures. , 2009, Radiation protection dosimetry.

[59]  P. Dimbylow,et al.  Induced current densities from low-frequency magnetic fields in a 2 mm resolution, anatomically realistic model of the body. , 1998, Physics in medicine and biology.

[60]  C Harris,et al.  Electromagnetic field strength levels surrounding electronic article surveillance (EAS) systems. , 2000, Health physics.

[61]  J. Bourhis,et al.  Chemotherapy added to locoregional treatment for head and neck squamous-cell carcinoma: three meta-analyses of updated individual data , 2000, The Lancet.

[62]  K. Lomas,et al.  A computer model of human thermoregulation for a wide range of environmental conditions: the passive system. , 1999, Journal of applied physiology.

[63]  A. Hirata,et al.  Intercomparison of whole-body averaged SAR in European and Japanese voxel phantoms , 2008, Physics in medicine and biology.

[64]  C. Gabriel,et al.  Electrical conductivity of tissue at frequencies below 1 MHz , 2009, Physics in medicine and biology.

[65]  R. Croft,et al.  SAR versus Sinc: What is the appropriate RF exposure metric in the range 1–10 GHz? Part I: Using planar body models , 2010, Bioelectromagnetics.

[66]  C Gabriel,et al.  Dielectric measurement: error analysis and assessment of uncertainty , 2006, Physics in medicine and biology.

[67]  Theodoros Samaras,et al.  Effectiveness of FDTD in predicting SAR distributions from the lucite cone applicator , 2000 .

[68]  J. R. Gauger,et al.  Household Appliance Magnetic Field Survey , 1985, IEEE Transactions on Power Apparatus and Systems.

[69]  E Neufeld,et al.  Measurement, simulation and uncertainty assessment of implant heating during MRI , 2009, Physics in medicine and biology.

[70]  G. V. van Rhoon,et al.  SAR characteristics of the Sigma-60-Ellipse applicator , 2008, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[71]  P. Dimbylow,et al.  Development of pregnant female, hybrid voxel-mathematical models and their application to the dosimetry of applied magnetic and electric fields at 50 Hz , 2006, Physics in medicine and biology.

[72]  Bolte Jfb,et al.  Gezondheidseffecten van blootstelling aan radiofrequente elektromagnetische velden - Probleemanalyse niet-ioniserende straling , 2004 .

[73]  R. Zaridze,et al.  Influence of Specific Absorption Rate Averaging Schemes on Correlation between Mass-Averaged Specific Absorption Rate and Temperature Rise , 2009 .

[74]  P. Dimbylow Development of the female voxel phantom, NAOMI, and its application to calculations of induced current densities and electric fields from applied low frequency magnetic and electric fields , 2005, Physics in medicine and biology.

[75]  Waldemar Wlodarczyk,et al.  A practical approach to thermography in a hyperthermia/magnetic resonance hybrid system: validation in a heterogeneous phantom. , 2005, International journal of radiation oncology, biology, physics.

[76]  J. Lagendijk,et al.  Calculation of SAR and temperature rise in a high-resolution vascularized model of the human eye and orbit when exposed to a dipole antenna at 900, 1500 and 1800 MHz , 2007, Physics in medicine and biology.

[77]  T. Samaras,et al.  Theoretical investigation of measurement procedures for the quality assurance of superficial hyperthermia applicators , 2002, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[78]  M. Dewhirst,et al.  Thresholds for thermal damage to normal tissues: An update , 2011, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[79]  N Kuster,et al.  Effects of geometry discretization aspects on the numerical solution of the bioheat transfer equation with the FDTD technique , 2006, Physics in medicine and biology.

[80]  S. Weinbaum,et al.  A new simplified bioheat equation for the effect of blood flow on local average tissue temperature. , 1985, Journal of biomechanical engineering.

[81]  N. Kuster,et al.  Differences in RF energy absorption in the heads of adults and children , 2005, Bioelectromagnetics.

[82]  P R Wainwright,et al.  Computational modelling of temperature rises in the eye in the near field of radiofrequency sources at 380, 900 and 1800 MHz , 2007, Physics in medicine and biology.

[83]  J. Rhee,et al.  Implication of Blood Flow in Hyperthermic Treatment of Tumors , 1984, IEEE Transactions on Biomedical Engineering.

[84]  R. Villar,et al.  Comparison of SAR and induced current densities in adults and children exposed to electromagnetic fields from electronic article surveillance devices , 2010, Physics in medicine and biology.

[85]  J F Bakker,et al.  Children and adults exposed to electromagnetic fields at the ICNIRP reference levels: theoretical assessment of the induced peak temperature increase , 2011, Physics in medicine and biology.

[86]  Pruppers Mjm,et al.  Extreem-laagfrequente elektrische en magnetische velden van huishoudelijke apparatuur , 2006 .

[87]  M. Kanda,et al.  ELECTROMAGNETIC INTERFERENCE (EMI) RADIATIVE MEASUREMENTS FOR AUTOMOTIVE APPLICATIONS , 1979 .

[88]  O. Gandhi,et al.  State of the knowledge for electromagnetic absorbed dose in man and animals , 1980, Proceedings of the IEEE.

[89]  M. Amichetti,et al.  Report of long-term follow-up in a randomized trial comparing radiation therapy and radiation therapy plus hyperthermia to metastatic lymph nodes in stage IV head and neck patients. , 1994, International journal of radiation oncology, biology, physics.

[90]  Barry N. Taylor,et al.  Guidelines for Evaluating and Expressing the Uncertainty of Nist Measurement Results , 2017 .

[91]  Thomas W. Sederberg,et al.  Free-form deformation of solid geometric models , 1986, SIGGRAPH.

[92]  R. W. Lau,et al.  The dielectric properties of biological tissues: III. Parametric models for the dielectric spectrum of tissues. , 1996, Physics in medicine and biology.

[93]  R L Mahajan,et al.  Temperature dependence of thermal conductivity of biological tissues , 2003, Physiological measurement.

[94]  P. Börnert,et al.  Improved B1-Mapping for Multi RF Transmit Systems , 2008 .

[95]  Gernot Schmid,et al.  Age dependence of dielectric properties of bovine brain and ocular tissues in the frequency range of 400 MHz to 18 GHz , 2005, Physics in medicine and biology.

[96]  Liyong Wu,et al.  An RF phased array applicator designed for hyperthermia breast cancer treatments , 2006, Physics in medicine and biology.

[97]  Niels Kuster,et al.  Assessment of induced radio-frequency electromagnetic fields in various anatomical human body models , 2009, Physics in medicine and biology.

[98]  S. Wacholder,et al.  Association between Childhood Acute Lymphoblastic Leukemia and Use of Electrical Appliances during Pregnancy and Childhood , 1998, Epidemiology.

[99]  K. Caputa,et al.  An algorithm for computations of the power deposition in human tissue , 1999 .

[100]  K. Jokela,et al.  ICNIRP Guidelines GUIDELINES FOR LIMITING EXPOSURE TO TIME-VARYING , 1998 .

[101]  C Gabriel,et al.  Cole–Cole parameters for the dielectric properties of porcine tissues as a function of age at microwave frequencies , 2010, Physics in medicine and biology.

[102]  P. Wust,et al.  Development and evaluation of a three-dimensional hyperthermia applicator with Water-COated Antennas (WACOA). , 2003, Medical physics.

[103]  P. Dimbylow,et al.  Variations in calculated SAR with distance to the perfectly matched layer boundary for a human voxel model. , 2006, Physics in medicine and biology.

[104]  P. Dimbylow,et al.  FDTD calculations of SAR for child voxel models in different postures between 10 MHz and 3 GHz. , 2009, Radiation protection dosimetry.

[105]  V. Anderson,et al.  SAR versus Sinc: What is the appropriate RF exposure metric in the range 1–10 GHz? Part II: Using complex human body models , 2010, Bioelectromagnetics.

[106]  K. Lomas,et al.  Computer prediction of human thermoregulatory and temperature responses to a wide range of environmental conditions , 2001, International journal of biometeorology.

[107]  Q. Balzano,et al.  RF energy in cars from window-mounted antennas , 1986, 36th IEEE Vehicular Technology Conference.

[108]  Ilkka Laakso,et al.  Assessment of the computational uncertainty of temperature rise and SAR in the eyes and brain under far-field exposure from 1 to 10 GHz , 2009, Physics in medicine and biology.

[109]  P Wust,et al.  Electromagnetic phased arrays for regional hyperthermia: optimal frequency and antenna arrangement. , 2001, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[110]  T. Samaras,et al.  Quantitative validation of the 3D SAR profile of hyperthermia applicators using the gamma method , 2007, Physics in medicine and biology.

[111]  C. Durney Electromagnetic dosimetry for models of humans and animals: A review of theoretical and numerical techniques , 1980, Proceedings of the IEEE.

[112]  K. Caputa,et al.  High-resolution organ dosimetry for human exposure to low-frequency electric fields , 1998 .

[113]  R J Myerson,et al.  Superficial hyperthermia and irradiation for recurrent breast carcinoma of the chest wall: prognostic factors in 196 tumors. , 1998, International journal of radiation oncology, biology, physics.

[114]  P. Dimbylow,et al.  Resonance behaviour of whole-body averaged specific energy absorption rate (SAR) in the female voxel model, NAOMI , 2005, Physics in medicine and biology.

[115]  J J Lagendijk,et al.  Modelling the thermal impact of a discrete vessel tree. , 1999, Physics in medicine and biology.

[116]  C Gabriel,et al.  The dielectric properties of biological tissues: I. Literature survey. , 1996, Physics in medicine and biology.

[117]  A Trotti,et al.  Toxicity in head and neck cancer: a review of trends and issues. , 2000, International journal of radiation oncology, biology, physics.

[118]  O. Fujiwara,et al.  Dominant factors influencing whole‐body average SAR due to far‐field exposure in whole‐body resonance frequency and GHz regions , 2007, Bioelectromagnetics.

[119]  H. Schippers,et al.  Design and test of a 434 MHz multi-channel amplifier system for targeted hyperthermia applicators , 2010, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[120]  C. Gabriel,et al.  Variation of the dielectric properties of tissues with age: the effect on the values of SAR in children when exposed to walkie–talkie devices , 2009, Physics in medicine and biology.

[121]  P R Wainwright,et al.  The relationship of temperature rise to specific absorption rate and current in the human leg for exposure to electromagnetic radiation in the high frequency band. , 2003, Physics in medicine and biology.

[122]  P R Stauffer,et al.  Performance evaluation of a conformal thermal monitoring sheet sensor array for measurement of surface temperature distributions during superficial hyperthermia treatments , 2008, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[123]  P. Dimbylow FDTD calculations of the whole-body averaged SAR in an anatomically realistic voxel model of the human body from 1 MHz to 1 GHz. , 1997, Physics in medicine and biology.

[124]  Paolo Bernardi,et al.  Specific absorption rate and temperature elevation in a subject exposed in the far-field of radio-frequency sources operating in the 10-900-MHz range , 2003, IEEE Transactions on Biomedical Engineering.

[125]  K D Paulsen,et al.  Optimization of pelvic heating rate distributions with electromagnetic phased arrays. , 1999, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[126]  M deBruijne,et al.  Evaluation of CEM43 degrees CT90 thermal dose in superficial hyperthermia: a retrospective analysis. , 2010 .

[127]  Margarethus M. Paulides,et al.  A Patch Antenna Design for Application in a Phased-Array Head and Neck Hyperthermia Applicator , 2007, IEEE Transactions on Biomedical Engineering.

[128]  P. Dimbylow,et al.  Calculated SAR distributions in a human voxel phantom due to the reflection of electromagnetic fields from a ground plane between 65 MHz and 2 GHz. , 2008, Physics in medicine and biology.

[129]  O. Fujiwara,et al.  Correlation between maximum temperature increase and peak SAR with different average schemes and masses , 2006, IEEE Transactions on Electromagnetic Compatibility.

[130]  Kenneth R Foster,et al.  Thermal aspects of exposure to radiofrequency energy: Report of a workshop , 2011, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[131]  Koichi Ito,et al.  Development and characteristics of a biological tissue‐equivalent phantom for microwaves , 2001 .

[132]  James C. Lin,et al.  SAR and Temperature Distributions in Canonical Head Models Exposed to Near- and Far-Field Electromagnetic Radiation at Different Frequencies , 2005 .

[133]  Akimasa Hirata,et al.  Dosimetry in models of child and adult for low-frequency electric field , 2001, IEEE Transactions on Biomedical Engineering.

[134]  P Wust,et al.  A fast algorithm to find optimal controls of multiantenna applicators in regional hyperthermia. , 2001, Physics in medicine and biology.

[135]  SAR and Temperature Changes in the Leg Due to an RF Decoupling Coil at Frequencies Between 64 and 213 MHz , 2000, Journal of magnetic resonance imaging : JMRI.

[136]  M. Seebass,et al.  Impact of nonlinear heat transfer on temperature control in regional hyperthermia , 1999, IEEE Transactions on Biomedical Engineering.

[137]  O. Fujiwara,et al.  FDTD analysis of body-core temperature elevation in children and adults for whole-body exposure , 2008, Physics in medicine and biology.

[138]  T. Nagaoka,et al.  Development of realistic high-resolution whole-body voxel models of Japanese adult males and females of average height and weight, and application of models to radio-frequency electromagnetic-field dosimetry. , 2004, Physics in medicine and biology.

[139]  J. Bakker,et al.  Electromagnetic head-and-neck hyperthermia applicator: experimental phantom verification and FDTD model. , 2007, International journal of radiation oncology, biology, physics.

[140]  H. H. Penns Analysis of tissue and arterial blood temperatures in the resting human forearm , 1948 .

[141]  Margarethus M. Paulides,et al.  A head and neck hyperthermia applicator: Theoretical antenna array design , 2007, International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group.

[142]  J A Stolwijk,et al.  Responses to the thermal environment. , 1977, Federation proceedings.

[143]  D. Merewether,et al.  On Implementing a Numeric Huygen's Source Scheme in a Finite Difference Program to Illuminate Scattering Bodies , 1980, IEEE Transactions on Nuclear Science.