Abstract
To evaluate a transverse electromagnetic (TEM), a circularly polarized (CP) (birdcage), and a 12-channel phased array head coil at the clinical field strength of B0 = 3T in terms of signal-to-noise ratio (SNR), signal homogeneity, and maps of the effective flip angle alpha. SNR measurements were performed on low flip angle gradient echo images. In addition, flip angle maps were generated for alpha(nominal) = 30 degrees using the double angle method. These evaluation steps were performed on phantom and human brain data acquired with each coil. Moreover, the signal intensity variation was computed for phantom data using five different regions of interest. In terms of SNR, the TEM coil performs slightly better than the CP coil, but is second to the smaller 12-channel coil for human data. As expected, both the TEM and the CP coils show superior image intensity homogeneity than the 12-channel coil, and achieve larger mean effective flip angles than the combination of body and 12-channel coil with reduced radio frequency power deposition. At 3T the benefits of TEM coil design over conventional lumped element(s) coil design start to emerge, though the phased array coil retains an advantage with respect to SNR performance.
References
Nov 1, 1990·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·P B RoemerO M Mueller
Aug 1, 1994·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·J T VaughanG M Pohost
Feb 1, 1996·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·R Stollberger, P Wach
Aug 10, 2000·Journal of Magnetic Resonance Imaging : JMRI·D I Hoult, D Phil
Jul 10, 2001·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·J T VaughanK Ugurbil
Jul 31, 2001·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·M AlecciP Jezzard
Sep 11, 2001·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·X ZhangW Chen
Apr 30, 2002·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·J T VaughanK Ugurbil
Apr 30, 2002·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·C M CollinsW Chen
Apr 26, 2003·Journal of Magnetic Resonance·Xiaoliang ZhangWei Chen
Jan 6, 2004·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Wanzhan LiuMichael B Smith
Nov 25, 2004·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Nikolai I Avdievich, Hoby P Hetherington
Jan 25, 2005·Journal of Magnetic Resonance Imaging : JMRI·Christopher M CollinsMichael B Smith
Jan 29, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Jinghua WangR Todd Constable
Jun 22, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·G C WigginsL L Wald
Aug 10, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Tamer S IbrahimDonald W Chakeres
May 18, 2006·NMR in Biomedicine·Michael A Ohliger, Daniel K Sodickson
Jun 21, 2006·Journal of Magnetic Resonance Imaging : JMRI·Chunsheng Wang, Gary X Shen
Citations
Jun 12, 2013·Brain Topography·Roy SalomonWietske van der Zwaag
Dec 18, 2010·AJNR. American Journal of Neuroradiology·P T ParikhJ L Sunshine
May 10, 2011·Magnetic Resonance Imaging·S Andrea Wijtenburg, Jack Knight-Scott
May 27, 2015·Radiological Physics and Technology·Tsukasa YoshidaYoshihiro Nakaya
Sep 30, 2008·Journal of Magnetic Resonance Imaging : JMRI·Peter Dawson
Aug 30, 2008·Current Osteoporosis Reports·E Michael Lewiecki
Nov 14, 2008·Science and Engineering Ethics·David B Resnik
Dec 17, 2008·Current Atherosclerosis Reports·Benjamin J Ansell
Oct 26, 2010·Langenbeck's Archives of Surgery·Adrian BusingerMarkus von Flüe
Oct 3, 2008·American Journal of Veterinary Research·Janet E Steiss, James C Wright
Sep 19, 2018·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Jérémie D ClémentÖzlem Ipek
May 14, 2019·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Jérémie ClémentÖzlem Ipek
Mar 12, 2013·Acta Radiologica·Martin Reiss-ZimmermannKarl-Titus Hoffmann
Feb 16, 2020·Skeletal Radiology·Laura M HorgaAlister J Hart