Numerical modelling of thermal effects in rats due to high-field magnetic resonance imaging (0.5-1 GHz)

Physics in Medicine and Biology

Volumn 49, Issue 24, 2004, Pages 5547-5558

  Trakic, Adnan ^a   Crozier, Stuart ^a   Liu, Feng ^a  

^a UNIVERSITY OF QUEENSLAND   (Australia)

Author keywords

[No Author keywords available]

Indexed keywords

ALGORITHMS; ELECTROMAGNETIC WAVES; FINITE DIFFERENCE METHOD; MAGNETIC RESONANCE; MAGNETIC RESONANCE IMAGING; MATHEMATICAL MODELS; MUSCLE; RESONATORS; TEMPERATURE DISTRIBUTION; THERMAL EFFECTS; THERMODYNAMIC PROPERTIES; TIME DOMAIN ANALYSIS; TUMORS;

FIELD STRENGTHS; FINITE-DIFFERENCE TIME-DOMAIN (FDTD) THERMAL MODELS; HYPERTHERMIA; RADIO-FREQUENCY ENERGY;

THERMOGRAPHY (TEMPERATURE MEASUREMENT);

ALGORITHM; ARTICLE; BODY TEMPERATURE; CALCULATION; CANCER THERAPY; CONTROLLED STUDY; ELECTRICAL PARAMETERS; ELECTROMAGNETIC RADIATION; HYPERTHERMIC THERAPY; IMAGE QUALITY; IN VIVO STUDY; MATHEMATICAL MODEL; NUCLEAR MAGNETIC RESONANCE IMAGING; PRIORITY JOURNAL; PROTON NUCLEAR MAGNETIC RESONANCE; RADIATION FIELD; RADIOFREQUENCY; SIGNAL TRANSDUCTION; SKELETAL MUSCLE; STEADY STATE; TEMPERATURE MEASUREMENT; THERMAL ANALYSIS; TIME; TISSUE DISTRIBUTION; VALIDATION PROCESS;

ANIMALS; BODY BURDEN; BODY TEMPERATURE REGULATION; MAGNETIC RESONANCE IMAGING; MICROWAVES; MODELS, BIOLOGICAL; RADIATION DOSAGE; RADIATION INJURIES; RADIATION PROTECTION; RADIOMETRY; RATS; RELATIVE BIOLOGICAL EFFECTIVENESS; RISK ASSESSMENT; RISK FACTORS; TEMPERATURE; THERMOGRAPHY;

EID: 12744278243     PISSN: 00319155     EISSN: None     Source Type: Journal    
DOI: 10.1088/0031-9155/49/24/010     Document Type: Article

References (29)

1. Benardi P, Cavagnaro M, Pisa S and Piuzzi E 1998 SAR distribution and temperature increase in an anatomical model of the human eye exposed to the field radiated by the user antenna in a wireless LAN IEEE Trans. Microw. Theory Tech. 46 2074-81
2. Bencsik M, Bowtell R and Bowley R M 2002 Electric fields induced in spherical volume conductor by temporally varying magnetic field gradients Phys. Med. Biol. 47 557-76
3. Brooks Airforce Database 2004 http://www.brooks.af.mil/AFRL/HED/hedr/dosimetry.html
4. Burkhardt M, Spinelli Y and Kuster N 1997 Exposure set-up to test effects of wireless communication systems on the CNS Health Phys. 73 770-8
5. Cangellaris A C and Wright D B 1991 Analysis of the numerical error caused by the stair-stepped approximation of a conducting boundary in FDTD simulations of electromagnetic phenomena IEEE Trans. Antennas Propag. 39 1518-25
6. Collins C M, Liu W, Wang J, Gruetter R, Vaughan T, Ugurbil K and Smith M 2004 Temperature and SAR calculations for a human head within volume and surface coils at 64 and 300 MHz J. Magn. Reson. Imaging 19 650-6
7. 1 distribution SNR SAR for a surface coil adjacent to an anatomically-accurate human body model Magn. Reson. Med. 45 692-9
8. Crozier S, Liu F, Beck B L and Xu B 2003 Numerical analysis of the RF field of re- entrant cavity MRI resonator at 11T loaded with the human head World Congress Med. Phys. Biomed. Eng. Sydney
9. Dimbylow P, Khalid M and Mann S 2003, Assessment of specific energy absorption rate (SAR) in the head from a TETRA handset Phys. Med. Biol. 48 3911-26
10. Gabriel C, Gabriel S and Corthout E 1996 The dielectric properties of biological tissues: 1. Literature survey Phys. Med. Biol. 41 2231-49
11. Hand J W, Lau R W, Lagendijk J J, Ling J, Burl M and Young I R 1999 Electromagnetic and thermal modelling of the SAR and temperature fields in tissue due to an RF decoupling coil Magn. Reson. Med. 42 183-92
12. Holmes K R 2004 Thermal Properties http://www.ece.utexas.edu/~valvano/research/Thermal.pdf
13. Hoult D I 2000 Sensitivity and power deposition in a high-field imaging experiment J. Magn. Reson. Imaging 103 354-7
14. Ibrahim T S, Lee R, Baertlein B A, Abduljalil A M, Zhu H and Robitaille P M L 2001 Effect of RF coil excitation on field inhomogeneity at ultra high field: a field optimized TEM resonator Magn. Reson. Imaging 19 1339-47
15. ICNIRP (International Commission in Non-Ionizing Radiation Protection) 1998 Guidelines for limiting exposure to time-varying electric, magnetic, and electromagnetic fields (up to 300GHz) Health Phys. 74 494-522
16. Jin J M 1999 Electromagnetic Analysis and Design in Magnetic Resonance Imaging (Boca Raton, FL: CRC Press)
17. Keltner J R, Carlson J W, Roos M S, Wong S T S, Wong T L and Buninger T F 1991 Electromagnetic fields of surface coil in vivo NMR at high frequencies Magn. Reson. Med. 22 467-80
18. Liu F, Crozier S, Zhao H and Lawrence B G 2002 Finite-difference time-domain-based studies of MRI pulsed field gradient-induced eddy currents inside the human body Concepts Magn. Reson. 15 26-36
19. Lu Y, Ying J, Tan T K and Arichandran K 1996 Electromagnetic and thermal simulation of 3-D human head model under RF Radiation by using the FDTD and FD approaches IEEE Trans. Magn. 32 1653-6
20. Pennes HH 1948 Analysis of tissue and arterial blood temperature in resting forearm J. Appl. Physiol. 1 93-122
21. Samaras T, Regli P and Kuster N 2000 Electromagnetic and heat transfer computation for non-ionizing radiation dosimetry Phys. Med. Biol. 45 2233-46
22. Strilka R J, Li S, Martin J T, Collins C M and Smith M B 1998 A numerical study of radiofrequency deposition in a spherical phantom using surface coils Magn. Reson. Imaging 16 787-98
23. Stuchly M A and Stuchly S S 1980 Dielectric properties of biological substances-tabulated J. Microw. Power 15 19-26
24. Taflove A 1995 Computational Electromagnetics - The Finite-Difference Time-Domain Method (London: Artech)
25. Taflove A and Brodwin M E 1975 Computation of the electromagnetic fields and induced temperatures within a model of the microwave irradiated human eye IEEE Trans. Microw. Theory Tech. 23 888-96
26. Wainwright P R 2003 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 Phys. Med. Biol. 48 3143-55
27. Wang J and Fujiwarea O 1999 FDTD computation of temperature rise in the human head for portable telephones IEEE Trans. Microw. Theory Tech. 47 1528-34
28. Wooden K M and Walsberg E G 2000 Effect of wind and solar radiation in metabolic heat production in a small desert roden, spermophilus tereticaudus J. Exp. Biol. 203 879-88
29. Yang Q X, Wang J H, Zhang X L, Smith M B, Adriany G, Zhu X H, Ugurbil K and Chen W 2002 Phantom design in the presence of wave behaviour of the radiofrequency field Proc. ISMRM