Articles (27): |
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Chadzynski GL, Bause J, Shajan G, Pohmann R, Scheffler K and Ehses P (October-2017) Fast and efficient free induction decay MR spectroscopic imaging of the human brain at 9.4 Tesla
Magnetic Resonance in Medicine 78(4) 1281–1295.

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Avdievich NI, Hoffmann J, Shajan G, Pfrommer A, Giapitzakis IA, Scheffler K and Henning A (February-2017) Evaluation of transmit efficiency and SAR for a tight fit transceiver human head phased array at 9.4 T
NMR in Biomedicine 30(2) 1-12.

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Hagberg GE, Bause J, Ethofer T, Ehses P, Dresler T, Herbert C, Pohmann R, Shajan G, Fallgatter A, Pavlova MA and Scheffler K (January-2017) Whole brain MP2RAGE-based mapping of the longitudinal relaxation time at 9.4T
NeuroImage 144(Part A) 203–216.

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Bisdas S, Chadzynski GL, Braun C, Schittenhelm J, Skardelly M, Hagberg GE, Ethofer T, Pohmann R, Shajan G, Engelmann J, Tabatabai G, Ziemann U, Ernemann U and Scheffler K (October-2016) MR spectroscopy for in vivo assessment of the oncometabolite 2-hydroxyglutarate and its effects on cellular metabolism in human brain gliomas at 9.4T
Journal of Magnetic Resonance Imaging 44(4) 823–833.

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Hoffmann J, Henning A, Giapitzakis IA, Scheffler K, Shajan G, Pohmann R and Avdievich NI (September-2016) Safety testing and operational procedures for self-developed radiofrequency coils
NMR in Biomedicine 29(9) 1131–1144.

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Mirkes C, Shajan G, Chadzynski G, Buckenmaier K, Bender B and Scheffler K (June-2016) 31P CSI of the human brain in healthy subjects and tumor patients at 9.4 T with a three-layered multi-nuclear coil: initial results
Magnetic Resonance Materials in Physics, Biology and Medicine 29(3) 579-589.

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Tse DH, Wiggins CJ, Ivanov D, Brenner D, Hoffmann J, Mirkes C, Shajan G, Scheffler K, Uludağ K and Poser BA (June-2016) Volumetric imaging with homogenised excitation and static field at 9.4 T
Magnetic Resonance Materials in Physics, Biology and Medicine 29(3) 333–345.

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Wiesner HM, Balla DZ, Shajan G, Scheffler K, Ugurbil K, Chen W, Uludag K and Pohmann R (May-2016) 17O relaxation times in the rat brain at 16.4 tesla
Magnetic Resonance in Medicine 75(5) 1886–1893.

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Bause J, Ehses P, Mirkes C, Shajan G, Scheffler K and Pohmann R (March-2016) Quantitative and functional pulsed arterial spin labeling in the human brain at 9.4 t
Magnetic Resonance in Medicine 75(3) 1054–1063.

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Mirkes C, Shajan G, Bause J, Buckenmaier K, Hoffmann J and Scheffler K (March-2016) Triple-quantum-filtered sodium imaging at 9.4 Tesla
Magnetic Resonance in Medicine 75(3) 1278–1289.

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Shajan G, Mirkes C, Buckenmaier K, Hoffmann J, Pohmann R and Scheffler K (February-2016) Three-layered radio frequency coil arrangement for sodium MRI of the human brain at 9.4 Tesla
Magnetic Resonance in Medicine 75(2) 906–916.

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Hoffmann J, Mirkes C, Shajan G, Scheffler K and Pohmann R (January-2016) Combination of a multimode antenna and TIAMO for traveling-wave imaging at 9.4 Tesla
Magnetic Resonance in Medicine 75(1) 452–462.

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Ehses P, Bause J, Shajan G and Scheffler K (December-2015) Efficient generation of T2*-weighted contrast by interslice echo-shifting for human functional and anatomical imaging at 9.4 Tesla
Magnetic Resonance in Medicine 74(6) 1698–1704.

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Chadzynski GL, Pohmann R, Shajan G, Kolb R, Bisdas S, Klose U and Scheffler K (June-2015) In vivo proton magnetic resonance spectroscopic imaging of the healthy human brain at 9.4 T: initial experience
Magnetic Resonance Materials in Physics, Biology and Medicine 28(3) 239-249.

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Mirkes CC, Hoffmann J, Shajan G, Pohmann R and Scheffler K (January-2015) High-resolution quantitative sodium imaging at 9.4 tesla
Magnetic Resonance in Medicine 73(1) 342–351.

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Hoffmann J, Shajan G, Scheffler K and Pohmann R (October-2014) Numerical and experimental evaluation of RF shimming in the human brain at 9.4 T using a dual-row transmit array
Magnetic Resonance Materials in Physics, Biology and Medicine 27(5) 373-386.

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Shajan G, Kozlov M, Hoffmann J, Turner R, Scheffler K and Pohmann R (February-2014) A 16-channel dual-row transmit array in combination with a 31-element receive array for human brain imaging at 9.4 T
Magnetic Resonance in Medicine 71(2) 870–879.

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Budde J, Shajan G, Scheffler K and Pohmann R (February-2014) Ultra-high resolution imaging of the human brain using acquisition-weighted imaging at 9.4 T
NeuroImage 86 592–598.

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Budde J, Shajan G, Zaitsev M, Scheffler K and Pohmann R (January-2014) Functional MRI in human subjects with gradient-echo and spin-echo EPI at 9.4 T
Magnetic Resonance in Medicine 71(1) 209–218.

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Balla DZ, Gottschalk S, Shajan G, Ueberberg S, Schneider S, Hardtke-Wolenski M, Jaeckel E, Hoerr V, Faber C, Scheffler K, Pohmann R and Engelmann J (December-2013) In vivo visualization of single native pancreatic islets in the mouse
Contrast Media & Molecular Imaging 8(6) 495-504.

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Hoffmann J, Shajan G, Budde J, Scheffler K and Pohmann R (May-2013) Human brain imaging at 9.4 T using a tunable patch antenna for transmission
Magnetic Resonance in Medicine 69(5) 1494–1500.

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Pohmann R, Shajan G, Hoffmann J, Budde J, Hagberg G, Bieri O, Bisdas S, Ernemann U, Weigel M, Ehses P, Hennig J, Chadzynski G and Scheffler K (April-2013) Imaging and Spectroscopy at 9.4 Tesla: First Results on Patients and Volunteers
MAGNETOM Flash 2013(2) 58-67.
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Shajan G, Hoffmann J, Balla DZ, Deelchand DK, Scheffler K and Pohmann R (October-2012) Rat brain MRI at 16.4T using a capacitively tunable patch antenna in combination with a receive array
NMR in Biomedicine 25(10) 1170–1176.

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Pohmann R, Shajan G and Balla D (December-2011) Contrast at high field: Relaxation times, magnetization transfer and phase in the rat brain at 16.4 T
Magnetic Resonance in Medicine 66(6) 1572-1581.

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Shajan G, Hoffmann J, Budde J, Adriany G, Ugurbil K and Pohmann R (August-2011) Design and Evaluation of an RF Front-End for 9.4 T Human
MRI
Magnetic Resonance in Medicine 66(2) 594–602.

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Budde J, Shajan G, Hoffmann J, Ugurbil K and Pohmann R (February-2011) Human imaging at 9.4 T using T2*-, phase-, and susceptibility-weighted contrast
Magnetic Resonance in Medicine 65(2) 544-550.

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Hong S-T, Balla DZ, Shajan G, Choi C, Ugurbil K and Pohmann R (January-2011) Enhanced neurochemical profile of the rat brain using in vivo 1H NMR spectroscopy at 16.4 T
Magnetic Resonance in Medicine 65(1) 28-34.
 
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Conference papers (3): |
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Mirkes C, Shajan G, Hoffmann J, Bause J, Buckenmaier K and Scheffler K (November-2015) Natrium MRT bei 9,4 Tesla, 18. Jahrestagung der Deutschen Sektion der ISMRM e.V. (DS ISMRM 2015), 23-27.
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Balla DZ, Ehses P, Pohmann R, Budde J, Mirkes C, Shajan G, Bowtell R and Scheffler K (July-2013) Functional QSM at 9.4T with single echo gradient-echo and EPI acquisition, 2nd International Workshop on MRI Phase Contrast & Quantitative Susceptibility Mapping (QSM 2013), 1-4.

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Chadzynski G, Gunamony S, Kolb R, Pohmann R, Scheffler K and Klose U (September-2012) In-vivo Proton Chemical Shift Imaging at 9.4 Tesla: preliminary study, 43. Jahrestagung der Deutschen Gesellschaft für Medizinische Physik (DGMP 2012), Deutsche Gesellschaft für Medizinische Physik, Jena, Germany, 60-63.
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Posters (46): |
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Mirkes C, Shajan G, Aghaeifar A, Zivkovic I, Buckenmaier K and Scheffler K (April-26-2017): Dual-layered multi-channel B0 and RF coil setup for an improved shimming performance at 9.4 Tesla, 25th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2017), Honolulu, HI, USA.
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Hagberg G, Bause J, Ethofer T, Ehses P, Dresler T, Herbert C, Pohmann R, Shajan G, Fallgatter A, Pavlova M and Scheffler K (April-26-2017): Factors influencing the detection of age-dependent variations of cortical myelin by MP2RAGE at 9.4T, 25th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2017), Honolulu, HI, USA.
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Chmelik M, Bencikova D, Mirkes C, Rodgers CT, Shajan G, Scheffler K, Trattnig S and Bogner W (May-11-2016): 31P MRS Signal-to-Noise Ratio in Human Brain at 3, 7, and 9.4 Tesla Using Dual Tuned Head RF Coils, 24th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2016), Singapore.
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Shajan G, Hoffmann J, Adriany G, Ugurbil K and Scheffler K (May-11-2016): A 7T head coil with 16-channel dual-row transmit and 32-channel receive array for pTx applications and high SNR, 24th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2016), Singapore.
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Chadzynski GL, Bause J, Shajan G, Pohmann R, Scheffler K and Ehses P (May-11-2016): Fast and efficient free induction decay MRSI at 9.4 T: assessment of neuronal activation-related changes in the human brain biochemistry, 24th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2016), Singapore.
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Chadzynski GL, Ehses P, Bause J, Shajan G, Pohmann R and Scheffler K (January-15-2016): A novel approach to assess an extended biochemical profile of the human brain by the means of fast and efficient in-vivo proton Magnetic Resonance Spectroscopic Imaging
at 9.4 Tesla, Forschungskolloquium 2016 der Medizinischen Fakultät, Tübingen, Germany.
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Mirkes C, Shajan G, Bause J, Buckenmaier K, Hoffmann J and Scheffler K (June-4-2015): Triple-quantum-filtered sodium imaging at 9.4 Tesla, 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015), Toronto, Canada.
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Scheffler K, Lohmann G, Mirkes C, Shajan G and Ehses P (June-3-2015): bOVOC: 200 Hz balanced One-Voxel-One-Coil MREG at 9.4T, 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015), Toronto, Canada.
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Bause J, In M-H, Ehses P, Shajan G, Speck O, Pohmann R and Scheffler K (June-3-2015): Distortion-Corrected High Resolution Zoomed fMRI at 9.4 T, 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015), Toronto, Canada.
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Shajan G, Hoffmann J, Scheffler K and Pohmann R (June-2-2015): An interface to connect a 16-channel transmit array to an 8-channel parallel transmit system, 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015), Toronto, Canada.
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Balla DZ, Pohmann R, Shajan G, Ehses P, Nauerth A, Steudel T, Murayama Y, Oeltermann A, Munk MH, Merkle H, Beyerlein M, Evrard HC, Logothetis NK and Scheffler K (June-2-2015): 500 ms temporal and 750 μm spatial inplane resolution for whole-brain fMRI applications in the macaque at 7T, 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015), Toronto, Canada.

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Shajan G, Balla DZ, Steudel T, Ehses P, Merkle H, Logothetis NK, Pohmann R and Scheffler K (June-1-2015): A 7T transmit and receive array combination for simultaneous investigation of electrophysiology and fMRI in non-human primates, 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015), Toronto, Canada.
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Shajan G, Mirkes C, Pohmann R and Scheffler K (June-1-2015): Phosphorus 3D CSI at 9.4 T using a 27-channel Receiver array, 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015), Toronto, Canada.
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Hoffmann J, Shajan G, Mirkes C, Shao T, Henning A, Pohmann R and Scheffler K (June-1-2015): Towards routine application of dynamic parallel transmission for whole-brain imaging at 9.4 Tesla, 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015), Toronto, Canada.
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Chadzynski G, Hagberg GE, Bause J, Shajan G, Bisdas S, Pohmann R, Engelmann J and Scheffler K (March-20-2015): Assessment of human brain tumors with proton magnetic resonance spectroscopic imaging at 9.4 Tesla, 10th Annual Meeting of the European Society for Molecular Imaging (EMIM 2015), Tübingen, Germany.
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Chadzynski G, Bause J, Hagberg GE, Shajan G, Pohmann R, Engelmann J and Scheffler K (March-19-2015): Free induction decay proton magnetic resonance spectroscopic imaging in the healthy human brain at 9.4 Tesla: initial results, 10th Annual Meeting of the European Society for Molecular Imaging (EMIM 2015), Tübingen, Germany.
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Ehses P, Shajan G and Scheffler K (May-15-2014): 3D Radial GRE-EPI with Up to 8-Fold Acceleration for Functional Imaging at 9.4T, Joint Annual Meeting ISMRM-ESMRMB 2014, Milano, Italy.
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Chadzynski GL, Henning A, Ehses P, Hoffmann J, Shajan G and Scheffler K (May-15-2014): High-Resolution Free Induction Decay Proton MRSI in the Human Brain at 9.4 T, Joint Annual Meeting ISMRM-ESMRMB 2014, Milano, Italy.
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Mirkes CC, Shajan G, Hoffmann J, Brenner D, Pohmann R and Scheffler K (May-15-2014): Sodium B1 mapping at 9.4 T, Joint Annual Meeting ISMRM-ESMRMB 2014, Milano, Italy.
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Bause J, Ehses P, Shajan G, Scheffler K and Pohmann R (May-12-2014): Functional ASL at 9.4 T: a comparison between balanced SSFP and GRE-EPI readout, Joint Annual Meeting ISMRM-ESMRMB 2014, Milano, Italy.
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