Analysis of the local worst-case SAR exposure caused by an MRI multi-transmit body coil in anatomical models of the human body

Physics in Medicine and Biology

Volumn 56, Issue 15, 2011, Pages 4649-4659

  Neufeld, Esra ^a   Gosselin, Marie Christine ^a   Murbach, Manuel ^a,b   Christ, Andreas ^a   Cabot, Eugenia ^a   Kuster, Niels ^a,b  

^a FOUNDATION FOR RESEARCH ON INFORMATION TECHNOLOGIES IN SOCIETY IT IS   (Switzerland)

^b ETH ZURICH   (Switzerland)

Author keywords

[No Author keywords available]

Indexed keywords

ANATOMICAL MODELS; HIGH-FIELD; HUMAN ANATOMY; HUMAN BODIES; INPUT POWER; POWER DEPOSITION; SPECIFIC ABSORPTION RATE; THREE MODELS; WHOLE-BODY;

EIGENVALUES AND EIGENFUNCTIONS; MAGNETIC RESONANCE IMAGING; RESONANCE; TISSUE;

ELECTROMAGNETIC FIELD EFFECTS;

ADULT; ARTICLE; AUDIOVISUAL EQUIPMENT; FEMALE; HUMAN; MALE; METHODOLOGY; NUCLEAR MAGNETIC RESONANCE IMAGING; RADIATION DOSE; SAFETY; STANDARD;

ADULT; FEMALE; HUMANS; MAGNETIC RESONANCE IMAGING; MALE; MODELS, ANATOMIC; RADIATION DOSAGE; SAFETY;

EID: 79961047445     PISSN: 00319155     EISSN: 13616560     Source Type: Journal    
DOI: 10.1088/0031-9155/56/15/002     Document Type: Article

References (31)

1. Benkler S, Chavannes N and Kuster N 2009 New powerful FDTD source based on Huygens surface: highly complex EM simulations performed on an ordinary PC Poster at the 31st Annu. Meeting of the Bioelectromagnetics Society (BEMS 2009) (Davos, Switzerland)
2. Brunner D O, Paska J, Froehlich J and Pruessmann K P 2009 SAR Assessment of transmit arrays: deterministic calculation of worst- and best-case performance Proc. ISMRM (Honolulu) p 4803
3. Brunner D O and Pruessmann K P 2010 Optimal design of multiple-channel RF pulses under strict power and SAR constraints Magn. Reson. Med. 63 1280-91
4. Cabot E, Christ A and Kuster N 2008 Whole body and local SAR in anatomical phantoms exposed to RF fields from birdcage coils Proc. 19th General Assembly of the International Union of Radio Science (URSIGA 2008) session number A07.5
5. Christ A et al 2010 The Virtual Family - development of surface based anatomical models of two adults and two children for dosimetric simulations Phys. Med. Biol. 55 1280-91
6. Das S K, Jones E A and Samulski T V 2001 A method of MRI-based thermal modelling for a RF phase array Int. J. Hyperth. 17 465-82 (Pubitemid 33048904)
7. FDA 1988 Guidance for the submission of premarket notifications for magnetic resonance diagnostic devices (Food and Drug Administration, Center for Devices and Radiologic Health)
8. Fujita H 2007 New horizons in MR technology: RF coil designs and trends Magn. Reson. Med. Sci. 6 29-42
9. Gabriel S, Lau R W and Gabriel C 1996 The dielectric properties of biological tissues: III. Parametric models for the dielectric spectrum of tissues Phys. Med. Biol. 41 2271
10. Gosselin M C, Christ A, Kuhn S and Kuster N 2009 Dependence of the occupational exposure to mobile phone base stations on the properties of the antenna and the human body IEEE Trans. Electromagn. Compat. 51 227
11. Hand J W, Li Y and Hajnal J V 2010 RF exposure and temperature rise in the foetus during MRI Phys. Med. Biol. 55 913-30
12. Hardy C J and Cline H E 1989 Spatial localization in two dimensions using NMR designer pulses J. Magn. Reson. 82 647-54
13. Ibrahim T S, Hue Y K and Tang L 2009 Understanding and manipulating the RF fields at high field MRI NMR Biomed. 22 927-36
14. ICNIRP 2004 Medical magnetic resonance (MR) procedures: protection of patients Health Phys. 87 197-216
15. IEC 2010 Medical electrical equipment Part 2-33. Particular requirements for the basic safety and essential performance of magnetic resonance equipment for medical diagnosis IEC 60601-2-33 Ed. 3
16. IEEE 1999 IEEE recommended practice for measurements and computations of radio frequency electromagnetic fields with respect to human exposure to such fields, 100 kHz-300 GHz IEEE C95.1-1991 (New York: IEEE)
17. IEEE 2002 IEEE recommended practice for measurements and computations of radio frequency electromagnetic fields with respect to human exposure to such fields, 100 kHz-300 GHz IEEE C95.3-2002 (New York: IEEE)
18. IEEE 2005 IEEE Standard for safety levels with respect to human exposure to radio frequency electromagnetic fields, 100 kHz-300 GHz IEEE C95.1-2005 (New York: IEEE)
19. IT'IS 2010 Virtual Population Project http://www.itis.ethz.ch/research/ virtual-population
20. JWG 2010 Draft International Technical Specification for ISO/TS 10974. Requirements for the safety and compatibility of magnetic resonance imaging for patients with an active implantable medical device ISO/TC 150/SC 6/JWG2 and IEC SC 62B/JWG1
21. Katscher U, Börnert P, Leussler C and van den Brink J S 2003 Transmit sense Magn. Reson. Med. 49 144-50
22. Koehler T, Maass P, Wust P and Seebass M 2001 A fast algorithm to find optimal controls of multiantenna applicators in regional hyperthermia Phys. Med. Biol. 46 2503
23. Liu F, Zhao H and Crozier S 2003 Calculation of electric fields induced by body and head motion in high-field MRI J. Magn. Res. 161 99-107
24. Neufeld E 2008 High resolution hyperthermia treatment planning Thesis Swiss Federal Institute of Technology, Zurich
25. Pennes H H 1948 Analysis of tissue and arterial blood temperatures in the resting human forearm J. Appl. Physiol. 1 93-122
26. Taflove A and Hagness S 2005 Computational Electrodynamics: The Finite Difference Time-Domain Method 2nd edn (Norwood, MA: Artech House)
27. Van den Berg C A T et al 2007 Simultaneous B1+ homogenization and specific absorption rate hot-spot suppression using a magnetic resonance phased array transmit coil Magn. Reson. Med. 57 577-86 (Pubitemid 46385868)
28. Van den Bergen B, Van den Berg C A T, Klomp D W J and Lagendijk J W 2009 SAR and power implications of different RF shimming strategies in the pelvis for 7 T MRI J. Magn. Reson. Imaging 30 194-202
29. Wang Z, Lin J C, Mao W, Liu W, Smith M B and Collins C M 2007 SAR and temperature: simulations and comparison to regulatory limits for MRI J. Magn. Reson. Imaging 26 437-41 (Pubitemid 47257747)
30. Zelinski A C, Angelone L M, Goyal V K, Bonmassar G, Adalsteinsson E and Wald L L 2008 Specific absorption rate studies of the parallel transmission of inner-volume excitations at 7 T J. Magn. Reson. Imaging 28 1005-18
31. Zhu Y 2004 Parallel excitation with an array of transmit coils Magn. Reson. Med. 51 775-84 (Pubitemid 38420455)