Hellmut Merkle

20.1k total citations · 5 hit papers
158 papers, 15.5k citations indexed

About

Hellmut Merkle is a scholar working on Radiology, Nuclear Medicine and Imaging, Spectroscopy and Cognitive Neuroscience. According to data from OpenAlex, Hellmut Merkle has authored 158 papers receiving a total of 15.5k indexed citations (citations by other indexed papers that have themselves been cited), including 127 papers in Radiology, Nuclear Medicine and Imaging, 43 papers in Spectroscopy and 40 papers in Cognitive Neuroscience. Recurrent topics in Hellmut Merkle's work include Advanced MRI Techniques and Applications (122 papers), Advanced NMR Techniques and Applications (42 papers) and Functional Brain Connectivity Studies (36 papers). Hellmut Merkle is often cited by papers focused on Advanced MRI Techniques and Applications (122 papers), Advanced NMR Techniques and Applications (42 papers) and Functional Brain Connectivity Studies (36 papers). Hellmut Merkle collaborates with scholars based in United States, Germany and Japan. Hellmut Merkle's co-authors include Kâmil Uǧurbil, Jutta Ellermann, Ravi S. Menon, David W. Tank, Michael Garwood, Satoshi Ogawa, Seong‐Gi Kim, Rolf Gruetter, Gregor Adriany and Kristy Hendrich and has published in prestigious journals such as Science, Proceedings of the National Academy of Sciences and Journal of the American Chemical Society.

In The Last Decade

Hellmut Merkle

157 papers receiving 15.2k citations

Hit Papers

5 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Intrinsic signal changes accompanying sensory stimulation: functional brain mapping with magnetic resonance imaging.

1992 2.6k citations David W. Tank, Ravi S. Menon et al. profile →
Functional brain mapping by blood oxygenation level-dependent contrast magnetic resonance imaging. A comparison of signal characteristics with a biophysical model

1993 1.3k citations Ravi S. Menon, David W. Tank et al. profile →
Simultaneousin vivo spectral editing and water suppression

1998 824 citations Hellmut Merkle, Jonathan Kirsch et al. NMR in Biomedicine profile →
Functional Magnetic Resonance Imaging of Motor Cortex: Hemispheric Asymmetry and Handedness

1993 814 citations Kristy Hendrich, Jutta Ellermann et al. profile →
7T vs. 4T: RF power, homogeneity, and signal‐to‐noise comparison in head images

2001 694 citations Michael Garwood, Lance DelaBarre et al. Magnetic Resonance in Medicine profile →

Peers

Countries citing papers authored by Hellmut Merkle

Since Specialization

Citations

This map shows the geographic impact of Hellmut Merkle's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Hellmut Merkle with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hellmut Merkle more than expected).

Fields of papers citing papers by Hellmut Merkle

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hellmut Merkle. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Hellmut Merkle. The network helps show where Hellmut Merkle may publish in the future.

Co-authorship network of co-authors of Hellmut Merkle

This figure shows the co-authorship network connecting the top 25 collaborators of Hellmut Merkle. A scholar is included among the top collaborators of Hellmut Merkle based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Hellmut Merkle. Hellmut Merkle is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

#	Work	Indexed citations
1	In vivo Metabolic Sensing of Hyperpolarized [1‐¹³C]Pyruvate in Mice Using a Recyclable Perfluorinated Iridium Signal Amplification by Reversible Exchange Catalyst 2024 ·Angewandte Chemie ·Jessica Ettedgui, Kazutoshi Yamamoto, (unknown), (unknown), Natarajan Raju, Olga Vasalatiy, Hellmut Merkle, Eduard Y. Chekmenev, Boyd M. Goodson, (unknown), Rolf E. Swenson	0
2	In vivo Metabolic Sensing of Hyperpolarized [1‐¹³C]Pyruvate in Mice Using a Recyclable Perfluorinated Iridium Signal Amplification by Reversible Exchange Catalyst 2024 ·Angewandte Chemie International Edition ·Jessica Ettedgui, Kazutoshi Yamamoto, (unknown), (unknown), Natarajan Raju, Olga Vasalatiy, Hellmut Merkle, Eduard Y. Chekmenev, Boyd M. Goodson, (unknown), Rolf E. Swenson	2
3	In Vivo Imaging of Tumor Physiological, Metabolic, and Redox Changes in Response to the Anti-Angiogenic Agent Sunitinib: Longitudinal Assessment to Identify Transient Vascular Renormalization 2014 ·Antioxidants and Redox Signaling ·Shingo Matsumoto, Keita Saito, Yoichi Takakusagi, Masayuki Matsuo, Jeeva Munasinghe, H Douglas Morris, Martin J. Lizak, Hellmut Merkle, Keiji Yasukawa, Nallathamby Devasahayam, (unknown), James B. Mitchell, Murali C. Krishna	37
4	T 2 -based fiber orientation mapping 2011 ·NeuroImage* ·Jongho Lee, Peter van Gelderen, Li‐Wei Kuo, Hellmut Merkle, Afonso C. Silva, Jeff H. Duyn	111
5	Sensitivity of MRI resonance frequency to the orientation of brain tissue microstructure (vol 107, pg 5130, 2010) 2010 ·UCL Discovery (University College London) ·(unknown), Karin Shmueli, Masaki Fukunaga, Peter van Gelderen, Hellmut Merkle, (unknown), J.H. Duyn	7
6	The effects of electrical microstimulation on cortical signal propagation 2010 ·Nature Neuroscience ·Nikos K. Logothetis, M Augath, Yusuke Murayama, Alexander Rauch, Fahad Sultan, Jozien Goense, A Oeltermann, Hellmut Merkle	259
7	Multisequence-imaging protocols to detect cortical lesions of patients with multiple sclerosis: Observations from a post-mortem 3 Tesla imaging study 2009 ·Journal of the Neurological Sciences ·Francesca Bagnato, Bing Yao, Fredric K. Cantor, Hellmut Merkle, (unknown), (unknown), (unknown), Martha Quezado, (unknown), H. Richard McFarland	30
8	BOLD and CBV‐weighted functional magnetic resonance imaging of the rat somatosensory system 2005 ·Magnetic Resonance in Medicine ·Shella Keilholz, Afonso C. Silva, Mira M. Raman, Hellmut Merkle, Alan P. Koretsky	65
9	Perfusion-based high-resolution fMRI in the primate brain using a novel vertical large-bore 7 Tesla setup 2004 ·MPG.PuRe (Max Planck Society) ·Josef Pfeuffer, Hellmut Merkle, NK Logothetis	1
10	Proton T₂ relaxation study of water, N‐acetylaspartate, and creatine in human brain using Hahn and Carr‐Purcell spin echoes at 4T and 7T 2002 ·Magnetic Resonance in Medicine ·Shalom Michaeli, Michael Garwood, Xiaohong Zhu, Lance DelaBarre, Peter Andersen, Gregor Adriany, Hellmut Merkle, Kâmil Uǧurbil, Wei Chen	170
11	Functional MR imaging of the monkey brain in a novel vertical large-bore 7 Tesla setup 2002 ·MPG.PuRe (Max Planck Society) ·Josef Pfeuffer, Hellmut Merkle, NK Logothetis	2
12	Eliminating spurious lipid sidebands in ¹H MRS of breast lesions 2002 ·Magnetic Resonance in Medicine ·Patrick J. Bolan, Lance DelaBarre, Eva H. Baker, Hellmut Merkle, Lenore I. Everson, Douglas Yee, Michael Garwood	72
13	In vitro and in vivo studies of1H NMR visibility to detect deoxyhemoglobin and deoxymyoglobin signals in myocardium 1999 ·Magnetic Resonance in Medicine ·Wei Chen, Yong‐Yeon Cho, Hellmut Merkle, Yun Ye, Yi Zhang, Guangrong Gong, Jianyi Zhang, Kâmil Uǧurbil	14
14	Localized in vivo 1H NMR detection of neurotransmitter labeling in rat brain during infusion of [1-13C] D-glucose 1999 ·Infoscience (Ecole Polytechnique Fédérale de Lausanne) ·Josef Pfeuffer, (unknown), In‐Young Choi, Hellmut Merkle, (unknown), Michael Garwood, Rolf Gruetter	77
15	Simultaneousin vivo spectral editing and water suppression breakdown → 1998 ·NMR in Biomedicine ·(unknown), Hellmut Merkle, Jonathan Kirsch, Michael Garwood, Rolf Gruetter	824
16	Resolution Improvements inin Vivo1H NMR Spectra with Increased Magnetic Field Strength 1998 ·Journal of Magnetic Resonance ·Rolf Gruetter, Sally Weisdorf, (unknown), Melissa Terpstra, Hellmut Merkle, Charles L. Truwit, Michael Garwood, Scott L. Nyberg, Kâmil Uǧurbil	154
17	An in Vivo31P Magnetic Resonance Spectroscopy Study of Uridine Excess in Rats Fed Orotic Acid 1995 ·Biochemical and Molecular Medicine ·Sally Weisdorf, Kristy Hendrich, (unknown), (unknown), Hellmut Merkle, Larry D. Bowers, Kâmil Uǧurbil	2
18	Transmural distribution of 2‐deoxyglucose uptake in normal and post‐ischemic canine myocardium 1995 ·NMR in Biomedicine ·Minoru Yoshiyama, Robert J. Bache, Hellmut Merkle, Michael Garwood, Kâmil Uǧurbil, Jianyi Zhang, (unknown)	11
19	Contrast‐enhanced first pass myocardial perfusion imaging: Correlation between myocardial blood flow in dogs at rest and during hyperemia 1993 ·Magnetic Resonance in Medicine ·Norbert Wilke, (unknown), Jianyi Zhang, Jutta Ellermann, Ya Xiong, Hellmut Merkle, G. Path, (unknown), Robert J. Bache, Kâmil Uǧurbil	268
20	Functional Brain Mapping Using Magnetic Resonance Imaging: Signal Changes Accompanying Visual Stimulation 1992 ·Investigative Radiology ·Ravi S. Menon, Seiji Ogawa, Seong‐Gi Kim, Jutta Ellermann, Hellmut Merkle, David W. Tank, Kâmil Uǧurbil	87

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact