Reduction of a high-field dielectric artifact with homemade gel

Magnetic Resonance in Medical Sciences

Volumn 7, Issue 1, 2008, Pages 37-41

  Takayama, Yukihisa ^a,b   Nonaka, Hiroi ^a   Nakajima, Manabu ^a   Obata, Takayuki ^a   Ikehira, Hiroo ^a  

^a NATIONAL INSTITUTE OF RADIOLOGICAL SCIENCES   (Japan)

^b KYUSHU UNIVERSITY   (Japan)

Author keywords

B1 inhomogeneity; Central brightening; Dielectric artifact; Gel pad

Indexed keywords

GELATIN; PLASTIC; SODIUM CHLORIDE; WATER;

ARTICLE; ARTIFACT; GEL; HONEY; IMAGE QUALITY; INSTRUMENTATION; MAGNETISM; METHODOLOGY; NUCLEAR MAGNETIC RESONANCE IMAGING; RADIOFREQUENCY RADIATION;

ARTIFACTS; GELATIN; GELS; HONEY; MAGNETIC RESONANCE IMAGING; MAGNETICS; PHANTOMS, IMAGING; PLASTICS; RADIO WAVES; SODIUM CHLORIDE; WATER;

EID: 52649102035     PISSN: 13473182     EISSN: 18802206     Source Type: Journal    
DOI: 10.2463/mrms.7.37     Document Type: Article

References (8)

1. Collins CM, Liu W, Schreiber W, Yang QX, Smith MB. Central brightening due to constructive interference with, without, and despite dielectric resonance. J Magn Reson Imaging 2005; 21:192-196.
2. Ibrahim TS, Lee R, Abduljalil AM, Baertlein BA, Robitaille PM. Dielectric resonances and B1 inhomogeneity in UHFMRI: computational analysis and experimental̂ndings. Magn Reson Imaging 2001; 19:219-226.
3. Jin JM, Chen J, Chew WC, Gan H, Magin RL, Dimbylow PJ. Computation of electromagnetiĉelds for high frequency magnetic resonance imaging applications. Phys Med Biol 1996; 41:2719-2738.
4. Saekho S, Yip CY, Noll DC, Boada FE, Stenger VA. Fast-Kz three-dimensional tailored radiofrequency pulse for reduced B1 inhomogeneity. Magn Reson Med 2006; 55:719-724.
5. Tropp J. Image brightening in samples of high dielectric constant. J Magn Reson 2004; 167:12-24.
6. Sunaga T, Ikehira H, Furukawa S, et al. Measurement of the electrical properties of human skin and the variation among subjects with certain skin conditions. Phys Med Biol 2002; 47:N11-N15.
7. Sunaga T, Ikehira H, Furukawa S, et al. Development of a dielectric equivalent gel for better impedance matching for human skin. Bioelectromagnetics 2003; 24:214-217.
8. Yang QX, Mao W, Wang J, et al. Manipulation of image intensity distribution at 7.0T: passive RF shimming and focusing with dielectric materials. J Magn Reson Imaging 2006; 24:197-202.