Fast and efficient free induction decay MR spectroscopic imaging of the human brain at 9.4 Tesla

The purpose of this work was to develop a fast and efficient MRSI‐FID acquisition scheme and test its performance in vivo. The aim was to find a trade‐off between the minimal total acquisition time and signal‐to‐noise ratio of the acquired spectra.

[1]  Tobias Kober,et al.  MP2RAGE, a self bias-field corrected sequence for improved segmentation and T1-mapping at high field , 2010, NeuroImage.

[2]  Wolfgang Bogner,et al.  3D GABA imaging with real-time motion correction, shim update and reacquisition of adiabatic spiral MRSI , 2014, NeuroImage.

[3]  W. Bogner,et al.  High‐resolution mapping of human brain metabolites by free induction decay 1H MRSI at 7 T , 2012, NMR in Biomedicine.

[4]  B. Gagoski,et al.  Lipid suppression in CSI with spatial priors and highly undersampled peripheral k‐space , 2012, Magnetic resonance in medicine.

[5]  S. Provencher.  Estimation of metabolite concentrations from localized in vivo proton NMR spectra , 1993, Magnetic resonance in medicine.

[6]  A Gregory Sorensen,et al.  Neurologic 3D MR spectroscopic imaging with low-power adiabatic pulses and fast spiral acquisition. , 2012, Radiology.

[7]  Peter Boesiger,et al.  Slice‐selective FID acquisition, localized by outer volume suppression (FIDLOVS) for 1H‐MRSI of the human brain at 7 T with minimal signal loss , 2009, NMR in biomedicine.

[8]  Zhengchao Dong,et al.  Proton MRS and MRSI of the brain without water suppression. , 2015, Progress in nuclear magnetic resonance spectroscopy.

[9]  Hans Hoogduin,et al.  High‐field MRS of the human brain at short TE and TR , 2011, NMR in biomedicine.

[10]  R. Gruetter,et al.  In vivo 1H NMR spectroscopy of rat brain at 1 ms echo time , 1999, Magnetic resonance in medicine.

[11]  Michael Garwood,et al.  Localized 1H NMR spectroscopy in different regions of human brain in vivo at 7 T: T2 relaxation times and concentrations of cerebral metabolites , 2012, NMR in biomedicine.

[12]  Wolfgang Bogner,et al.  Lipid suppression via double inversion recovery with symmetric frequency sweep for robust 2D‐GRAPPA‐accelerated MRSI of the brain at 7 T , 2015, NMR in biomedicine.

[13]  R Pohmann,et al.  Theoretical evaluation and comparison of fast chemical shift imaging methods. , 1997, Journal of magnetic resonance.

[14]  P R Luijten,et al.  7‐T 1H MRS with adiabatic refocusing at short TE using radiofrequency focusing with a dual‐channel volume transmit coil , 2011, NMR in biomedicine.

[15]  Klaus Scheffler,et al.  A 16‐channel dual‐row transmit array in combination with a 31‐element receive array for human brain imaging at 9.4 T , 2014, Magnetic resonance in medicine.

[16]  Terence W Nixon,et al.  Compensation of gradient-induced magnetic field perturbations. , 2008, Journal of magnetic resonance.

[17]  Gülin Öz,et al.  Regional neurochemical profiles in the human brain measured by 1H MRS at 7 T using local B1 shimming , 2012, NMR in biomedicine.

[18]  Peter Jezzard,et al.  Two‐voxel spectroscopy with dynamic B0 shimming and flip angle adjustment at 7 T in the human motor cortex , 2015, NMR in biomedicine.

[19]  Peter Andersen,et al.  In vivo 1H NMR spectroscopy of the human brain at 9.4 T: initial results. , 2010, Journal of magnetic resonance.

[20]  Karl J. Friston,et al.  Unified segmentation , 2005, NeuroImage.

[21]  V. Govindaraju,et al.  Proton NMR chemical shifts and coupling constants for brain metabolites , 2000, NMR in biomedicine.

[22]  D. Leibfritz,et al.  Experimental method to eliminate frequency modulation sidebands in localized in vivo 1H MR spectra acquired without water suppression , 2004, Magnetic resonance in medicine.

[23]  L. Wald,et al.  Accelerated proton echo planar spectroscopic imaging (PEPSI) using GRAPPA with a 32‐channel phased‐array coil , 2008, Magnetic resonance in medicine.

[24]  Peter R Luijten,et al.  Multislice 1H MRSI of the human brain at 7 T using dynamic B0 and B1 shimming , 2012, Magnetic resonance in medicine.

[25]  Klaus Scheffler,et al.  B0 shimming at 9.4T using a multicoil approach: coil design with genetic algorithm , 2016 .

[26]  D. O. Walsh,et al.  Adaptive reconstruction of phased array MR imagery , 2000, Magnetic resonance in medicine.

[27]  Uwe Klose,et al.  Chemical shift imaging without water suppression at 3 T. , 2010, Magnetic resonance imaging.

[28]  Hoby P Hetherington,et al.  Role of very high order and degree B0 shimming for spectroscopic imaging of the human brain at 7 tesla , 2012, Magnetic resonance in medicine.

[29]  Peter R Luijten,et al.  Lipid suppression for brain MRI and MRSI by means of a dedicated crusher coil , 2015, Magnetic resonance in medicine.

[30]  Rolf Pohmann,et al.  Human imaging at 9.4 T using T2*‐, phase‐, and susceptibility‐weighted contrast , 2011, Magnetic resonance in medicine.

[31]  U. Klose,et al.  Proton CSI without solvent suppression with strongly reduced field gradient related sideband artifacts , 2013, Magnetic Resonance Materials in Physics, Biology and Medicine.

[32]  J. Frahm,et al.  Differential distribution of NAA and NAAG in human brain as determined by quantitative localized proton MRS , 1997, NMR in biomedicine.

[33]  U. Klose.  In vivo proton spectroscopy in presence of eddy currents , 1990, Magnetic resonance in medicine.

[34]  R. Grossman,et al.  Chemical‐shift artifact reduction in hadamard‐encoded MR spectroscopic imaging at high (3T and 7T) magnetic fields , 2007, Magnetic resonance in medicine.

[35]  R Pohmann,et al.  Accurate phosphorus metabolite images of the human heart by 3D acquisition‐weighted CSI , 2001, Magnetic resonance in medicine.

[36]  Anke Henning,et al.  Magnetization exchange with water and T1 relaxation of the downfield resonances in human brain spectra at 3.0 T , 2011, Magnetic resonance in medicine.

[37]  Steven G. Johnson,et al.  The Design and Implementation of FFTW3 , 2005, Proceedings of the IEEE.

[38]  R. B. Kingsley,et al.  WET, a T1- and B1-insensitive water-suppression method for in vivo localized 1H NMR spectroscopy. , 1994, Journal of magnetic resonance. Series B.

[39]  Jullie W Pan,et al.  Short echo spectroscopic imaging of the human brain at 7T using transceiver arrays , 2009, Magnetic resonance in medicine.

[40]  S Trattnig,et al.  Coil combination of multichannel MRSI data at 7 T: MUSICAL , 2013, NMR in biomedicine.

[41]  Michael Schär,et al.  Spin‐echo magnetic resonance spectroscopic imaging at 7 T with frequency‐modulated refocusing pulses , 2013, Magnetic resonance in medicine.

[42]  Robin M Heidemann,et al.  Controlled aliasing in volumetric parallel imaging (2D CAIPIRINHA) , 2006, Magnetic resonance in medicine.

[43]  Peter Boesiger,et al.  Using spatial prior knowledge in the spectral fitting of MRS images , 2012, NMR in biomedicine.

[44]  R E Lenkinski,et al.  1H spectroscopy without solvent suppression: characterization of signal modulations at short echo times. , 2001, Journal of magnetic resonance.

[45]  K Ugurbil,et al.  In vivo 1H NMR spectroscopy of the human brain at 7 T , 2001, Magnetic resonance in medicine.

[46]  Wolfgang Bogner,et al.  Mapping of brain macromolecules and their use for spectral processing of 1H-MRSI data with an ultra-short acquisition delay at 7T , 2015, NeuroImage.

[47]  Jullie W Pan,et al.  RF shimming for spectroscopic localization in the human brain at 7 T , 2010, Magnetic resonance in medicine.