Author Helms, Gunther

• 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 | 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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• 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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• 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 | 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
  ​ ​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 | 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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• 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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• 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
  ​ ​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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• 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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• 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
  ​ ​Investigation and Modeling of Magnetization Transfer Effects in Two-Dimensional Multislice Turbo Spin Echo Sequences With Low Constant or Variable Flip Angles at 3 T​
  Weigel, M.; Helms, G. & Hennig, J.​ (2010) 
  Magnetic Resonance in Medicine, 63(1) pp. 230​-234​.​ DOI: https://doi.org/10.1002/mrm.22145 
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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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• 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
  ​ ​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 | Research Paper
  ​ ​In vivo proton MR spectroscopy findings specific for adenylosuccinate lyase deficiency​
  Henneke, M.; Dreha-Kulaczewski, S. F. ; Brockmann, K. ; van der Graaf, M.; Willemsen, M. A.; Engelke, U. & Dechent, P.  et al.​ (2010) 
  NMR in Biomedicine, 23(5) pp. 441​-445​.​ DOI: https://doi.org/10.1002/nbm.1480 
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• 2011 | Journal Article | 
  ​ ​Unified segmentation based correction of R1 brain maps for RF transmit field inhomogeneities (UNICORT)​
  Weiskopf, N.; Lutti, A.; Helms, G.; Novak, M.; Ashburner, J. & Hutton, C.​ (2011) 
  NeuroImage, 54(3) pp. 2116​-2124​.​ DOI: https://doi.org/10.1016/j.neuroimage.2010.10.023 
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• 2011 | Journal Article
  ​ ​Individual Voxel-Based Subtype Prediction can Differentiate Progressive Supranuclear Palsy from Idiopathic Parkinson Syndrome and Healthy Controls​
  Focke, N. K.; Helms, G.; Scheewe, S.; Pantel, P. M.; Bachmann, C. G.; Dechent, P. & Ebentheuer, J. et al.​ (2011) 
  Human Brain Mapping, 32(11) pp. 1905​-1915​.​ DOI: https://doi.org/10.1002/hbm.21161 
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• 2011 | Journal Article
  ​ ​Basal cerebral blood volume during the poststimulation undershoot in BOLD MRI of the human brain​
  Dechent, P. ; Schuetze, G.; Helms, G.; Merboldt, K.-D. & Frahm, J. ​ (2011) 
  Journal of Cerebral Blood Flow & Metabolism, 31(1) pp. 82​-89​.​ DOI: https://doi.org/10.1038/jcbfm.2010.133 
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• 2011 | Journal Article
  ​ ​Increased putamen and callosal motor subregion in treatment-naive boys with Tourette syndrome indicates changes in the bihemispheric motor network​
  Roessner, V.; Overlack, S.; Schmidt-Samoa, C.; Baudewig, J.; Dechent, P.; Rothenberger, A. & Helms, G.​ (2011) 
  Journal of Child Psychology and Psychiatry, 52(3) pp. 306​-314​.​ DOI: https://doi.org/10.1111/j.1469-7610.2010.02324.x 
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• 2011 | Journal Article
  ​ ​Identification of Signal Bias in the Variable Flip Angle Method by Linear Display of the Algebraic Ernst Equation​
  Helms, G.; Dathe, H.; Weiskopf, N. & Dechent, P.​ (2011) 
  Magnetic Resonance in Medicine, 66(3) pp. 669​-677​.​ DOI: https://doi.org/10.1002/mrm.22849 
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• 2012 | Journal Article | Research Paper
  ​ ​Assessment of myelination in hypomyelinating disorders by quantitative MRI​
  Dreha-Kulaczewski, S. F. ; Brockmann, K. ; Henneke, M.; Dechent, P. ; Wilken, B.; Gärtner, J.   & Helms, G.​ (2012) 
  Journal of Magnetic Resonance Imaging, 36(6) pp. 1329​-1338​.​ DOI: https://doi.org/10.1002/jmri.23774 
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• 2012 | Journal Article | 
  ​ ​Visualizing dopamine transporter integrity with iodine-123-FP-CIT SPECT in combination with high resolution MRI in the brain of the common marmoset monkey​
  Garea-Rodriguez, E.; Schlumbohm, C.; Czeh, B.; Koenig, J.; Helms, G.; Heckmann, C. & Meller, B. et al.​ (2012) 
  Journal of Neuroscience Methods, 210(2) pp. 195​-201​.​ DOI: https://doi.org/10.1016/j.jneumeth.2012.07.009 
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• 2013 | Journal Article
  ​ ​Structural and quantitative neuroimaging of the common marmoset monkey using a clinical MRI system​
  Helms, G.; Garea-Rodriguez, E.; Schlumbohm, C. ; König, J.; Dechent, P. ; Fuchs, E.   & Wilke, M. ​ (2013) 
  Journal of Neuroscience Methods, 215(1) pp. 121​-131​.​ DOI: https://doi.org/10.1016/j.jneumeth.2013.02.011 
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• 2013 | Journal Article | 
  ​ ​Micro-Structural Brain Alterations in Aviremic HIV plus Patients with Minor Neurocognitive Disorders: A Multi-Contrast Study at High Field​
  Granziera, C.; Daducci, A.; Simioni, S.; Cavassini, M.; Roche, A.; Meskaldji, D. & Kober, T. et al.​ (2013) 
  PLoS ONE, 8(9) art. e72547​.​ DOI: https://doi.org/10.1371/journal.pone.0072547 
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• 2013 | Journal Article | 
  ​ ​Multiparametric brainstem segmentation using a modified multivariate mixture of Gaussians​
  Lambert, C.; Lutti, A.; Helms, G.; Frackowiak, R. & Ashburner, J.​ (2013) 
  NeuroImage Clinical, 2 pp. 684​-694​.​ DOI: https://doi.org/10.1016/j.nicl.2013.04.017 
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• 2014 | Journal Article
  ​ ​Visualizing dopamine transporter integrity with iodine-123-FP-CIT SPECT in combination with high resolution MRI in the brain of the common marmoset monkey (vol 210, pg 195, 2013)​
  Garea-Rodriguez, E.; Schlumbohm, C.; Czeh, B.; Koenig, J.; Helms, G.; Heckmann, C. & Meller, B. et al.​ (2014) 
  Journal of Neuroscience Methods, 222.​ DOI: https://doi.org/10.1016/j.jneumeth.2013.10.023 
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• 2014 | Journal Article
  ​ ​Structural Abnormalities in the Thalamus of Migraineurs With Aura: A Multiparametric Study at 3 T​
  Granziera, C.; Daducci, A.; Romascano, D.; Roche, A.; Helms, G.; Krueger, G. & Hadjikhani, N.​ (2014) 
  Human Brain Mapping, 35(4) pp. 1461​-1468​.​ DOI: https://doi.org/10.1002/hbm.22266 
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• 2014 | Journal Article | 
  ​ ​Revisiting a historic human brain with magnetic resonance imaging - the first description of a divided central sulcus.​
  Schweizer, R. ; Helms, G. & Frahm, J. ​ (2014) 
  Frontiers in Neuroanatomy, 8 art. 35​.​ DOI: https://doi.org/10.3389/fnana.2014.00035 
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• 2014 | Journal Article
  ​ ​Idiopathic-generalized epilepsy shows profound white matter diffusiontensor imaging alterations​
  Focke, N. K.; Diederich, C.; Helms, G.; Nitsche, M. A.; Lerche, H. & Paulus, W. J.​ (2014) 
  Human Brain Mapping, 35(7) pp. 3332​-3342​.​ DOI: https://doi.org/10.1002/hbm.22405 
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• 2014 | Journal Article
  ​ ​Brain Tissue Properties Differentiate Between Motor and Limbic Basal Ganglia Circuits​
  Accolla, E. A.; Dukart, J.; Helms, G.; Weiskopf, N.; Kherif, F.; Lutti, A. & Chowdhury, R. et al.​ (2014) 
  Human Brain Mapping, 35(10) pp. 5083​-5092​.​ DOI: https://doi.org/10.1002/hbm.22533 
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• 2014 | Journal Article | 
  ​ ​Widespread age-related differences in the human brain microstructure revealed by quantitative magnetic resonance imaging.​
  Callaghan, M. F.; Freund, P.; Draganski, B.; Anderson, E.; Cappelletti, M.; Chowdhury, R. & Diedrichsen, J. et al.​ (2014) 
  Neurobiology of aging, 35(8) pp. 1862​-1872​.​ DOI: https://doi.org/10.1016/j.neurobiolaging.2014.02.008 
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• 2015 | Journal Article | 
  ​ ​Reproducibility of the Structural Brain Connectome Derived from Diffusion Tensor Imaging​
  Bonilha, L.; Gleichgerrcht, E.; Fridriksson, J.; Rorden, C.; Breedlove, J. L.; Nesland, T. & Paulus, W. J. et al.​ (2015) 
  PLoS ONE, 10(9) art. e0135247​.​ DOI: https://doi.org/10.1371/journal.pone.0135247 
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• 2015 | Journal Article
  ​ ​A General Linear Relaxometry Model of R-1 Using Imaging Data​
  Callaghan, M. F.; Helms, G.; Lutti, A.; Mohammadi, S. & Weiskopf, N.​ (2015) 
  Magnetic Resonance in Medicine, 73(3) pp. 1309​-1314​.​ DOI: https://doi.org/10.1002/mrm.25210 
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• 2016 | Journal Article
  ​ ​Pharmacokinetics of the MRI contrast agent gadobutrol in common marmoset monkeys (Callithrix jacchus)​
  Helms, G.; Schlumbohm, C.; Garea-Rodriguez, E.; Dechent, P. & Fuchs, E.​ (2016) 
  Journal of Medical Primatology, 45(6) pp. 290​-296​.​ DOI: https://doi.org/10.1111/jmp.12227 
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• 2016 | Journal Article
  ​ ​A New Targeted Model of Experimental Autoimmune Encephalomyelitis in the Common Marmoset​
  Stassart, R. M.; Helms, G.; Garea-Rodriguez, E.; Nessler, S.; Hayardeny, L.; Wegner, C. & Schlumbohm, C. et al.​ (2016) 
  Brain Pathology, 26(4) pp. 452​-464​.​ DOI: https://doi.org/10.1111/bpa.12292 
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• 2016 | Journal Article | 
  ​ ​Comparative Analysis of the Effects of Neurotrophic Factors CDNF and GDNF in a Nonhuman Primate Model of Parkinson's Disease​
  Garea-Rodriguez, E.; Eesmaa, A.; Lindholm, P.; Schlumbohm, C.; Koenig, J.; Meller, B. & Krieglstein, K. et al.​ (2016) 
  PLoS ONE, 11(2) art. e0149776​.​ DOI: https://doi.org/10.1371/journal.pone.0149776 
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• 2018 | Journal Article | 
  ​ ​Shifted dynamic interactions between subcortical nuclei and inferior frontal gyri during response preparation in persistent developmental stuttering​
  Metzger, F. L. ; Auer, T.; Helms, G.; Paulus, W. ; Frahm, J. ; Sommer, M.   & Neef, N. E. ​ (2018) 
  Brain Structure & Function, 223(1) pp. 165​-182​.​ DOI: https://doi.org/10.1007/s00429-017-1476-1 
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• 2019 | Journal Article
  ​ ​The impact of endurance training and table soccer on brain metabolites in schizophrenia​
  Rauchmann, B.-S.; Ghaseminejad, F.; Keeser, D.; Keller-Varady, K.; Schneider-Axmann, T.; Takahashi, S. & Karali, T. et al.​ (2019) 
  Brain Imaging and Behavior, 14(2) pp. 515​-526​.​ DOI: https://doi.org/10.1007/s11682-019-00198-1 
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• 2024 | Journal Article
  ​ ​Folate receptor α deficiency - Myelin-sensitive MRI as a reliable biomarker to monitor the efficacy and long-term outcome of a new therapeutic approach​
  Dreha-Kulaczewski, S.; Sahoo, P.; Preusse, M.; Gkalimani, I.; Dechent, P.; Helms, G. & Hofer, S. et al.​ (2024) 
  Journal of Inherited Metabolic Disease,.​ DOI: https://doi.org/10.1002/jimd.12713 
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