Author Helms, Gunther
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2006 | Journal Article
Interaction of exchange and differential relaxation in the saturation recovery behavior of the binary spin-bath model for magnetization transfer
Helms, G. (2006)
Concepts in Magnetic Resonance Part A, 28A(4) pp. 291-298. DOI: https://doi.org/10.1002/cmr.a.20058
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2006 | Journal Article
Contrast-driven approach to intracranial segmentation using a combination of T2-weighted and T1-weighted 3D MRI data sets
Helms, G.; Kallenberg, K. & Dechent, P. (2006)
Journal of Magnetic Resonance Imaging, 24(4) pp. 790-795. DOI: https://doi.org/10.1002/jmri.20692
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2006 | Journal Article | Research Paper
Cerebral metabolic and structural alterations in hereditary spastic paraplegia with thin corpus callosum assessed by MRS and DTI
Dreha-Kulaczewski, S. F. ; Dechent, P. ; Helms, G.; Frahm, J. ; Gärtner, J. & Brockmann, K. (2006)
Neuroradiology, 48(12) pp. 893-898. DOI: https://doi.org/10.1007/s00234-006-0148-2
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2007 | Conference Abstract
Complete recovery of NAA reduction in white matter disorders demonstrated by proton MRS
Dreha-Kulaczewski, S. F. ; Dechent, P. ; Helms, G.; Frahm, J. ; Gärtner, J. & Brockmann, K. (2007)
European Journal of Pediatrics, 166(3) pp. 274-274. , Max-Planck-Institute for Experimental Medicine, Göttingen.
New York: Springer.
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2008 | Journal Article
High-Resolution Maps of Magnetization Transfer with Inherent Correction for RF Inhomogeneity and T(1) Relaxation Obtained from 3D FLASH MRI
Helms, G.; Dathe, H.; Kallenberg, K. & Dechent, P. (2008)
Magnetic Resonance in Medicine, 60(6) pp. 1396-1407. DOI: https://doi.org/10.1002/mrm.21732
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2008 | Journal Article
Rapid radiofrequency field mapping in vivo using single-shot STEAM MRI
Helms, G.; Finsterbusch, J.; Weiskopf, N. & Dechent, P. (2008)
Magnetic Resonance in Medicine, 60(3) pp. 739-743. DOI: https://doi.org/10.1002/mrm.21676
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2008 | Review
The principles of quantification applied to in vivo proton MR spectroscopy
Helms, G. (2008)
European Journal of Radiology, 67(2) pp. 218-229.
Elsevier Ireland Ltd. DOI: https://doi.org/10.1016/j.ejrad.2008.02.034
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2008 | Journal Article | Research Paper |
Cerebral involvement in axonal Charcot-Marie-Tooth neuropathy caused by mitofusin2 mutations
Brockmann, K. ; Dreha-Kulaczewski, S. F. ; Dechent, P. ; Boennemann, C.; Helms, G.; Kyllerman, M. & Brueck, W. et al. (2008)
Journal of Neurology, 255(7) pp. 1049-1058. DOI: https://doi.org/10.1007/s00415-008-0847-1
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2008 | Journal Article
Quantitative FLASH MRI at 3T using a rational approximation of the Ernst equation
Helms, G.; Dathe, H. & Dechent, P. (2008)
Magnetic Resonance in Medicine, 59(3) pp. 667-672. DOI: https://doi.org/10.1002/mrm.21542
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2009 | Journal Article |
Folate Receptor Alpha Defect Causes Cerebral Folate Transport Deficiency: A Treatable Neurodegenerative Disorder Associated with Disturbed Myelin Metabolism
Steinfeld, R.; Grapp, M.; Kraetzner, R.; Dreha-Kulaczewski, S.; Helms, G.; Dechent, P. & Wevers, R. et al. (2009)
The American Journal of Human Genetics, 85 pp. 354-363. DOI: https://doi.org/10.1016/j.ajhg.2009.08.005.
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2009 | Journal Article |
Untreated Glioblastoma Multiforme: Increased Myo-inositol and Glutamine Levels in the Contralateral Cerebral Hemisphere at Proton MR Spectroscopy
Kallenberg, K.; Bock, H.-C.; Helms, G.; Jung, K.; Wrede, A.; Buhk, J.-H. & Giese, A. et al. (2009)
Radiology, 253(3) pp. 805-812. DOI: https://doi.org/10.1148/radiol.2533071654
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2009 | Journal Article | Research Paper |
Serial proton MR spectroscopy and diffusion tensor imaging in infantile Balo's concentric sclerosis
Dreha-Kulaczewski, S. F. ; Helms, G.; Dechent, P. ; Hofer, S. ; Gärtner, J. & Frahm, J. (2009)
Neuroradiology, 51(2) pp. 113-121. DOI: https://doi.org/10.1007/s00234-008-0470-y
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2009 | Journal Article
Increased SNR and Reduced Distortions by Averaging Multiple Gradient Echo Signals in 3D FLASH Imaging of the Human Brain at 3T
Helms, G. & Dechent, P. (2009)
Journal of Magnetic Resonance Imaging, 29(1) pp. 198-204. DOI: https://doi.org/10.1002/jmri.21629
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2009 | Journal Article
In vivo quantification of the bound pool T-1 in human white matter using the binary spin-bath model of progressive magnetization transfer saturation
Helms, G. & Hagberg, G. E. (2009)
Physics in Medicine and Biology, 54(23) pp. N529-N540. DOI: https://doi.org/10.1088/0031-9155/54/23/N01
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2009 | Journal Article
No Brain Structure Abnormalities in Boys with Tourette's Syndrome: A Voxel-Based Morphometry Study
Roessner, V.; Overlack, S.; Baudewig, J.; Dechent, P.; Rothenberger, A. & Helms, G. (2009)
Movement Disorders, 24(16) pp. 2398-2403. DOI: https://doi.org/10.1002/mds.22847
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2009 | Journal Article |
Improved segmentation of deep brain grey matter structures using magnetization transfer (MT) parameter maps
Helms, G.; Draganski, B.; Frackowiak, R.; Ashburner, J. & Weiskopf, N. (2009)
NeuroImage, 47(1) pp. 194-198. DOI: https://doi.org/10.1016/j.neuroimage.2009.03.053
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2010 | Journal Article |
Exact algebraization of the signal equation of spoiled gradient echo MRI
Dathe, H. & Helms, G. (2010)
Physics in Medicine and Biology, 55(15) pp. 4231-4245. DOI: https://doi.org/10.1088/0031-9155/55/15/003
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2010 | Journal Article
Modeling the Influence of TR and Excitation Flip Angle on the Magnetization Transfer Ratio (MTR) in Human Brain Obtained From 3D Spoiled Gradient Echo MRI
Helms, G.; Dathe, H. & Dechent, P. (2010)
Magnetic Resonance in Medicine, 64(1) pp. 177-185. DOI: https://doi.org/10.1002/mrm.22379
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2010 | Journal Article
Viewing the effective k-space coverage of MR images: phantom experiments with fast Fourier transform
Menke, J.; Helms, G. & Larsen, J. (2010)
Magnetic Resonance Imaging, 28(1) pp. 87-94. DOI: https://doi.org/10.1016/j.mri.2009.05.027
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2010 | Journal Article
Optimization and Validation of Methods for Mapping of the Radiofrequency Transmit Field at 3T
Lutti, A.; Hutton, C.; Finsterbusch, J.; Helms, G. & Weiskopf, N. (2010)
Magnetic Resonance in Medicine, 64(1) pp. 229-238. DOI: https://doi.org/10.1002/mrm.22421
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