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Alexander Hammers

Active 1996–2026

166
Papers
18,545
Citations
63
h-index
125
i10-index

Citations

Citations per year for Alexander Hammers1940: 1 citations1969: 1 citations1974: 1 citations1978: 1 citations1990: 1 citations1991: 1 citations1994: 2 citations1997: 2 citations2000: 3 citations2001: 9 citations2002: 25 citations2003: 26 citations2004: 52 citations2005: 48 citations2006: 49 citations2007: 124 citations2008: 159 citations2009: 230 citations2010: 259 citations2011: 352 citations2012: 360 citations2013: 353 citations2014: 442 citations2015: 440 citations2016: 371 citations2017: 332 citations2018: 355 citations2019: 628 citations2020: 657 citations2021: 789 citations2022: 787 citations2023: 515 citations2024: 644 citations2025: 276 citations2026: 45 citations1941–1968: no citations, so these years are not shown1970–1973: no citations, so these years are not shown1975–1977: no citations, so these years are not shown1979–1989: no citations, so these years are not shown1992–1993: no citations, so these years are not shown1995–1996: no citations, so these years are not shown1998–1999: no citations, so these years are not shown

Citation sources

Countries

World map of the countries and regions citing this authorUnited States: 2,355 citing papers, 20.6% of this breakdownUnited Kingdom: 1,425 citing papers, 12.5% of this breakdownChina: 894 citing papers, 7.8% of this breakdownGermany: 680 citing papers, 6% of this breakdownFrance: 580 citing papers, 5.1% of this breakdownCanada: 468 citing papers, 4.1% of this breakdownItaly: 429 citing papers, 3.8% of this breakdownNetherlands: 416 citing papers, 3.6% of this breakdownAustralia: 342 citing papers, 3% of this breakdownSpain: 324 citing papers, 2.8% of this breakdownSweden: 283 citing papers, 2.5% of this breakdownSwitzerland: 278 citing papers, 2.4% of this breakdown
0%20.6%Other 25.8%

Institutions

Fields

  • Medicine51.7%
  • Computer Science19.4%
  • Neuroscience18%
  • Biochemistry, Genetics and Molecular Biology3%
  • Engineering2.6%
  • Psychology1.1%
  • Other4.2%

Topics

  • Medical Image Segmentation Techniques6.1%
  • Alzheimer's disease research and treatments4.2%
  • Functional Brain Connectivity Studies4.1%
  • Dementia and Cognitive Impairment Research3.8%
  • Advanced Neuroimaging Techniques and Applications3.1%
  • Neuroinflammation and Neurodegeneration Mechanisms3%
  • Other75.7%

Coauthors

All papers

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  1. Symptom prevalence, duration, and risk of hospital admission in individuals infected with SARS-CoV-2 during periods of omicron and delta variant dominance: a prospective observational study from the ZOE COVID Study

    Authors: Cristina Menni, Ana M Valdes, Lorenzo Polidori, Michela Antonelli, Satya Penamakuri, Ana Nogal, Panayiotis Louca, Anna May, Jane C Figueiredo, Christina Hu, Erika Molteni, Liane Canas, Marc F Österdahl, Marc Modat, Carole H Sudre, Ben Fox, Alexander Hammers, Jonathan Wolf, Joan Capdevila, Andrew T Chan, Sean P David, Claire J Steves, Sebastien Ourselin, Tim D Spector - The Lancet 2022 cited by 834

  2. Three‐dimensional maximum probability atlas of the human brain, with particular reference to the temporal lobe

    Authors: Alexander Hammers, R. Allom, Matthias J. Koepp, S. L. Free, R. Myers, Louis Lemieux, Tejal N. Mitchell, David J. Brooks, John S. Duncan - Human Brain Mapping 2003 cited by 1,336

  3. GAN Augmentation: Augmenting Training Data using Generative Adversarial Networks

    Authors: Christopher Bowles, Liang Chen, Ricardo Guerrero, Paul Bentley, Roger N. Gunn, Alexander Hammers, David Alexander Dickie, Maria del C. Valdés Hernández, Joanna M. Wardlaw, Daniel Rueckert - arXiv (Cornell University), CoRR 2018 cited by 361

  4. In vivo imaging of microglial activation with [11C](R)-PK11195 PET in idiopathic Parkinson's disease

    Authors: Alexander Gerhard, Nicola Pavese, Gary Hotton, Federico Turkheimer, M. Magalh es, Alexander Hammers, Karla Eggert, Wolfgang H. Oertel, Richard B. Banati, David J. Brooks - Neurobiology of Disease 2005 cited by 1,214

  5. Random forest-based similarity measures for multi-modal classification of Alzheimer's disease

    Authors: Katherine R. Gray, Paul Aljabar, Rolf A. Heckemann, Alexander Hammers, Daniel Rueckert - NeuroImage 2012 cited by 467

  6. The effects of COVID-19 on cognitive performance in a community-based cohort: a COVID symptom study biobank prospective cohort study

    Authors: Nathan J. Cheetham, Rose Penfold, Valentina Giunchiglia, Vicky Bowyer, Carole H. Sudre, Liane S. Canas, Jie Deng, Benjamin Murray, Eric Kerfoot, Michela Antonelli, Khaled Rjoob, Erika Molteni, Marc F. Österdahl, Nicholas R. Harvey, William Trender, Michael H. Malim, Katie J. Doores, Peter J. Hellyer, Marc Modat, Alexander Hammers, Sébastien Ourselin, Emma L. Duncan, Adam Hampshire, Claire J. Steves - EClinicalMedicine 2023 cited by 96

  7. Multi-atlas based segmentation of brain images: Atlas selection and its effect on accuracy

    Authors: Paul Aljabar, Rolf A. Heckemann, Alexander Hammers, Joseph V. Hajnal, Daniel Rueckert - NeuroImage 2009 cited by 883

  8. Vaccine side-effects and SARS-CoV-2 infection after vaccination in users of the COVID Symptom Study app in the UK: a prospective observational study

    Authors: Cristina Menni, Kerstin Kläser, Anna May, Lorenzo Polidori, Joan Capdevila Pujol, Panayiotis Louca, Carole H. Sudre, Long H. Nguyen, David A. Drew, Jordi Merino, Christina Hu, Somesh Selvachandran, Michela Antonelli, Benjamin Murray, Liane S. Canas, Erika Molteni, Mark S. Graham, Marc Modat, Amit D. Joshi, Massimo Mangino, Alexander Hammers, Anna L. Goodman, Andrew T. Chan, Jonathan Wolf, Claire J. Steves, Ana M. Valdes, Sébastien Ourselin, Tim D. Spector - The Lancet Infectious Diseases 2021 cited by 1,082

  9. Illness duration and symptom profile in symptomatic UK school-aged children tested for SARS-CoV-2

    Authors: Erika Molteni, Carole H. Sudre, Liane S. Canas, Sunil Bhopal, Robert C Hughes, Michela Antonelli, Benjamin Murray, Kerstin Kläser, Eric Kerfoot, Liyuan Chen, Jie Deng, Christina Hu, Somesh Selvachandran, K. L. Q. Read, Joan Capdevila Pujol, Alexander Hammers, Tim D. Spector, Sébastien Ourselin, Claire J. Steves, Marc Modat, Michael Absoud, Emma L. Duncan - The Lancet Child & Adolescent Health 2021 cited by 435

  10. Macroanatomy and 3D probabilistic atlas of the human insula

    Authors: Isabelle Faillenot, Rolf A. Heckemann, Maud Frot, Alexander Hammers - NeuroImage 2017 cited by 175

  11. Magnetic resonance imaging of the newborn brain: Manual segmentation of labelled atlases in term-born and preterm infants

    Authors: Ioannis S. Gousias, A. David Edwards, Mary A. Rutherford, Serena J. Counsell, Joseph V. Hajnal, Daniel Rueckert, Alexander Hammers - NeuroImage 2012 cited by 227

  12. Profiling post-COVID-19 condition across different variants of SARS-CoV-2: a prospective longitudinal study in unvaccinated wild-type, unvaccinated alpha-variant, and vaccinated delta-variant populations

    Authors: Liane S. Canas, Erika Molteni, Jie Deng, Carole H. Sudre, Benjamin Murray, Eric Kerfoot, Michela Antonelli, Khaled Rjoob, Joan Capdevila Pujol, Lorenzo Polidori, Anna May, Marc F. Österdahl, Ronan Whiston, Nathan J. Cheetham, Vicky Bowyer, Tim D. Spector, Alexander Hammers, Emma L. Duncan, Sébastien Ourselin, Claire J. Steves, Marc Modat - The Lancet Digital Health 2023 cited by 67

  13. CERMEP-IDB-MRXFDG: a database of 37 normal adult human brain [18F]FDG PET, T1 and FLAIR MRI, and CT images available for research

    Authors: Inès Mérida, Julien Jung, Sandrine Bouvard, Didier Le Bars, Sophie Lancelot, F. Lávenne, Caroline Bouillot, Jérôme Redouté, Alexander Hammers, Nicolas Costes - EJNMMI Research 2021 cited by 63

  14. Mapping neurotransmitter systems to the structural and functional organization of the human neocortex

    Authors: Justine Y. Hansen, Golia Shafiei, Ross D. Markello, Kelly Smart, Sylvia M. L. Cox, Martin Nørgaard, Vincent Beliveau, Yanjun Wu, Jean‐Dominique Gallezot, Étienne Aumont, Stijn Servaes, Stephanie G. Scala, Jonathan M. DuBois, Gabriel Wainstein, Gleb Bezgin, Thomas Funck, Taylor W. Schmitz, R. Nathan Spreng, Marian Galovic, Matthias J. Koepp, John S. Duncan, Jonathan Coles, Tim D. Fryer, Franklin I. Aigbirhio, Colm J. McGinnity, Alexander Hammers, Jean-Paul R. Soucy, Sylvain Baillet, Synthia Guimond, Jarmo Hietala, Marc‐André Bédard, Marco Leyton, Eliane Kobayashi, Pedro Rosa‐Neto, Melanie Ganz, Gitte M. Knudsen, Nicola Palomero‐Gallagher, James M. Shine, Richard E. Carson, Lauri Tuominen, Alain Dagher, Bratislav Mišić - Nature Neuroscience 2021 cited by 783

  15. Microglia, amyloid, and cognition in Alzheimer's disease: An [11C](R)PK11195-PET and [11C]PIB-PET study

    Authors: Paul Edison, Hilary Archer, Alexander Gerhard, Rainer Hinz, Nicola Pavese, Federico Turkheimer, Alexander Hammers, Yen Tai, Nick C. Fox, Angus Kennedy, Martin N. Rossor, David J. Brooks - Neurobiology of Disease 2008 cited by 513

  16. Diagnostic accuracy of 18F amyloid PET tracers for the diagnosis of Alzheimer’s disease: a systematic review and meta-analysis

    Authors: Elizabeth Morris, Anastasia Chalkidou, Alexander Hammers, Janet L. Peacock, Jennifer Summers, Stephen Keevil - European Journal of Nuclear Medicine and Molecular Imaging 2015 cited by 249

  17. Pseudo-CTs from T1-weighted MRI for planning of low-intensity transcranial focused ultrasound neuromodulation: An open-source tool

    Authors: Siti N. Yaakub, Tristan A. White, Eric Kerfoot, Lennart Verhagen, Alexander Hammers, Elsa Fouragnan - Brain stimulation 2023 cited by 47

  18. Diet quality and risk and severity of COVID-19: a prospective cohort study

    Authors: Jordi Merino, Amit D. Joshi, Long H. Nguyen, Emily R. Leeming, Mohsen Mazidi, David A. Drew, Rachel Gibson, Mark S. Graham, Chun‐Han Lo, Joan Capdevila Pujol, Benjamin Murray, Christina Hu, Somesh Selvachandran, Alexander Hammers, Shilpa N Bhupathiraju, Shreela V. Sharma, Carole H. Sudre, Christina M. Astley, Jorge E. Chavarro, Sohee Kwon, Wenjie Ma, Cristina Menni, Walter C. Willett, Sébastien Ourselin, Claire J. Steves, Jonathan Wolf, Paul W. Franks, Timothy D. Spector, Sarah Berry, Andrew T. Chan - Gut 2021 cited by 209

  19. Multi-region analysis of longitudinal FDG-PET for the classification of Alzheimer's disease

    Authors: Katherine R. Gray, Robin Wolz, Rolf A. Heckemann, Paul Aljabar, Alexander Hammers, Daniel Rueckert - NeuroImage 2012 cited by 183

  20. Automatic segmentation of brain MRIs of 2-year-olds into 83 regions of interest

    Authors: Ioannis S. Gousias, Daniel Rueckert, Rolf A. Heckemann, Leigh Dyet, James P. Boardman, A. David Edwards, Alexander Hammers - NeuroImage 2007 cited by 366

  21. Diffeomorphic Registration Using B-Splines

    Authors: Daniel Rueckert, Paul Aljabar, Rolf A. Heckemann, Joseph V. Hajnal, Alexander Hammers - Lecture notes in computer science, MICCAI (2) 2006 cited by 313

  22. A multi-centre evaluation of eleven clinically feasible brain PET/MRI attenuation correction techniques using a large cohort of patients

    Authors: Claes Nøhr Ladefoged, Ian Law, Udunna Anazodo, Keith St. Lawrence, David Izquierdo-Garcia, Ciprian Catana, Ninon Burgos, M. Jorge Cardoso, Sébastien Ourselin, Brian F. Hutton, Inés Mérida, Nicolas Costes, Alexander Hammers, Didier Benoit, Søren Holm, Meher R. Juttukonda, Hongyu An, Jorge Cabello, Mathias Lukas, Stephan G. Nekolla, Sibylle Ziegler, Matthias Fenchel, Bjoern Jakoby, Michael E. Casey, Tammie L. S. Benzinger, Liselotte Højgaard, Adam Espe Hansen, Flemming Littrup Andersen - NeuroImage 2016 cited by 230

  23. Robust whole-brain segmentation: Application to traumatic brain injury

    Authors: Christian Ledig, Rolf A. Heckemann, Alexander Hammers, Juan Carlos López, Virginia F. J. Newcombe, Antonios Makropoulos, Jyrki Lötjönen, David K. Menon, Daniel Rueckert - Medical Image Analysis, Medical Image Anal. 2014 cited by 171

  24. Glutamate NMDA receptor dysregulation in Parkinson’s disease with dyskinesias

    Authors: Imtiaz Ahmed, Subrata K. Bose, Nicola Pavese, Anil Ramlackhansingh, Federico Turkheimer, Gary Hotton, Alexander Hammers, David J. Brooks - Brain 2011 cited by 208