World's Best Scientists 2026 revealed!

D-Index & Metrics

Neuroscience

D-Index
59
Citations
15282
World Ranking
3960
National Ranking
109

Kenji Ishii publication distribution in Neuroscience in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Neuroscience in 2026. The highlighted bar marks where Kenji Ishii sits on this spectrum.

38–47 publications: 18 scientists 48–57 publications: 79 scientists 58–67 publications: 193 scientists 68–77 publications: 323 scientists 78–87 publications: 406 scientists 88–97 publications: 452 scientists 98–107 publications: 539 scientists 108–117 publications: 505 scientists 118–127 publications: 522 scientists 128–137 publications: 469 scientists 138–147 publications: 456 scientists 148–157 publications: 459 scientists 158–167 publications: 397 scientists 168–177 publications: 383 scientists 178–187 publications: 350 scientists 188–197 publications: 302 scientists 198–207 publications: 306 scientists 208–217 publications: 262 scientists 218–227 publications: 242 scientists 228–237 publications: 220 scientists 238–247 publications: 203 scientists 248–257 publications: 174 scientists 258–267 publications: 176 scientists 268–277 publications: 175 scientists 278–287 publications: 125 scientists 288–297 publications: 116 scientists 298–307 publications: 127 scientists 308–317 publications: 128 scientists 318–327 publications: 99 scientists 328–337 publications: 89 scientists 338–347 publications: 78 scientists 348–357 publications: 96 scientists 358–367 publications: 66 scientists 368–377 publications: 59 scientists 378–387 publications: 65 scientists 388–397 publications: 54 scientists 398–407 publications: 48 scientists 408–417 publications: 49 scientists 418–427 publications: 34 scientists 428–437 publications: 31 scientists 438–447 publications: 30 scientists 448–457 publications: 31 scientists 458–467 publications: 36 scientists 468–477 publications: 40 scientists 478–487 publications: 35 scientists 488–497 publications: 30 scientists 498–507 publications: 23 scientists 508–517 publications: 26 scientists 518–527 publications: 20 scientists 528–537 publications: 23 scientists 538–547 publications: 20 scientists 548–557 publications: 20 scientists 558–567 publications: 17 scientists 568–577 publications: 14 scientists 578–587 publications: 20 scientists 588–597 publications: 20 scientists 598–607 publications: 19 scientists 608–617 publications: 18 scientists 618–627 publications: 17 scientists 628–637 publications: 11 scientists 638–647 publications: 11 scientists 648–657 publications: 11 scientists 658–667 publications: 8 scientists 668–677 publications: 7 scientists 678–687 publications: 11 scientists 688–697 publications: 10 scientists 698–707 publications: 4 scientists 708–717 publications: 6 scientists 718–727 publications: 5 scientists 728–737 publications: 5 scientists 738–747 publications: 9 scientists 748–757 publications: 9 scientists 758–767 publications: 3 scientists 768–777 publications: 7 scientists 778–787 publications: 7 scientists 788–797 publications: 6 scientists 798–807 publications: 2 scientists 808–817 publications: 2 scientists 818–827 publications: 7 scientists 828–837 publications: 0 scientists 838–847 publications: 9 scientists 848–857 publications: 3 scientists 858–867 publications: 1 scientists 868–877 publications: 3 scientists 878–886 publications: 6 scientists 887+ publications: 100 scientists
38 publications 887+

This scientist: 475 publications — 94th percentile

94% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 887 publications or more.

Kenji Ishii D-index placement in Neuroscience in 2026

The chart shows the D-index (discipline H-index) distribution of Neuroscience scientists ranked by Research.com in 2026. The highlighted bar marks where Kenji Ishii sits on this spectrum.

30–31 D-Index: 42 scientists 32–33 D-Index: 172 scientists 34–35 D-Index: 296 scientists 36–37 D-Index: 435 scientists 38–39 D-Index: 459 scientists 40–41 D-Index: 456 scientists 42–43 D-Index: 467 scientists 44–45 D-Index: 478 scientists 46–47 D-Index: 512 scientists 48–49 D-Index: 435 scientists 50–51 D-Index: 425 scientists 52–53 D-Index: 418 scientists 54–55 D-Index: 392 scientists 56–57 D-Index: 357 scientists 58–59 D-Index: 334 scientists 60–61 D-Index: 328 scientists 62–63 D-Index: 260 scientists 64–65 D-Index: 278 scientists 66–67 D-Index: 239 scientists 68–69 D-Index: 250 scientists 70–71 D-Index: 210 scientists 72–73 D-Index: 200 scientists 74–75 D-Index: 189 scientists 76–77 D-Index: 170 scientists 78–79 D-Index: 146 scientists 80–81 D-Index: 113 scientists 82–83 D-Index: 126 scientists 84–85 D-Index: 100 scientists 86–87 D-Index: 84 scientists 88–89 D-Index: 99 scientists 90–91 D-Index: 84 scientists 92–93 D-Index: 85 scientists 94–95 D-Index: 72 scientists 96–97 D-Index: 76 scientists 98–99 D-Index: 45 scientists 100–101 D-Index: 49 scientists 102–103 D-Index: 43 scientists 104–105 D-Index: 32 scientists 106–107 D-Index: 45 scientists 108–109 D-Index: 50 scientists 110–111 D-Index: 32 scientists 112–113 D-Index: 39 scientists 114–115 D-Index: 32 scientists 116–117 D-Index: 29 scientists 118–119 D-Index: 27 scientists 120–121 D-Index: 19 scientists 122–123 D-Index: 23 scientists 124–125 D-Index: 27 scientists 126–127 D-Index: 16 scientists 128–129 D-Index: 24 scientists 130–131 D-Index: 13 scientists 132–133 D-Index: 21 scientists 134–135 D-Index: 17 scientists 136–137 D-Index: 14 scientists 138–139 D-Index: 15 scientists 140–141 D-Index: 10 scientists 142–143 D-Index: 10 scientists 144–145 D-Index: 13 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 8 scientists 150–151 D-Index: 6 scientists 152–153 D-Index: 6 scientists 154–155 D-Index: 7 scientists 156–157 D-Index: 7 scientists 158–159 D-Index: 10 scientists 160–161 D-Index: 4 scientists 162 D-Index: 8 scientists 163+ D-Index: 100 scientists
30 D-Index 163+

This scientist: 59 D-Index — 59th percentile

59% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 163 D-Index or more.

Overview

Kenji Ishii is affiliated with Nippon Medical School in Japan and has contributed extensively to the field of medicine, with a particular focus on radiology, nuclear medicine, and imaging. Their research spans multiple subfields including psychiatry and mental health, neurology, physiology, and molecular biology.

The scientist's work addresses a range of topics, prominently featuring dementia and cognitive impairment research, Alzheimer's disease research and treatments, and various aspects of medical imaging techniques and applications. Other significant areas of investigation include glioma diagnosis and treatment, advanced MRI techniques, radiomics and machine learning in medical imaging, and advanced neuroimaging techniques and applications.

Kenji Ishii has published papers in several notable venues, with frequent publications in Clinical Nuclear Medicine, Alzheimer's & Dementia, and Annals of Nuclear Medicine. Additional publication venues include Research Square and Neuro-Oncology Advances.

Recent papers highlight a focus on neuroimaging and neurodegenerative diseases. Some examples include:

  • Parenchymal border macrophages regulate the flow dynamics of the cerebrospinal fluid, 2022, Nature
  • Cerebrospinal fluid proteomics define the natural history of autosomal dominant Alzheimer's disease, 2023, Nature Medicine
  • Predicting brain age from functional connectivity in symptomatic and preclinical Alzheimer disease, 2022, NeuroImage
  • Detection of sub-centimeter lesions using digital TOF-PET/CT system combined with Bayesian penalized likelihood reconstruction algorithm, 2020, Annals of Nuclear Medicine
  • Quantitative Evaluation of 18F-Flutemetamol PET in Patients With Cognitive Impairment and Suspected Alzheimer's Disease: A Multicenter Study, 2021, Frontiers in Neurology

Kenji Ishii has collaborated frequently with other researchers, with notable coauthors including Kenji Ishibashi, Kei Wagatsuma, Jun Toyohara, Atsushi Iwata, and Takeshi Ikeuchi.

Best Publications

  • High performance plasma amyloid-β biomarkers for Alzheimer’s disease

    Akinori Nakamura;Naoki Kaneko;Victor L Villemagne;Takashi Kato

  • Brief screening tool for mild cognitive impairment in older Japanese: Validation of the Japanese version of the Montreal Cognitive Assessment

    Yoshinori Fujiwara;Hiroyuki Suzuki;Masashi Yasunaga;Mika Sugiyama

  • Florbetaben PET imaging to detect amyloid beta plaques in Alzheimer's disease: Phase 3 study

    Osama Sabri;Marwan N. Sabbagh;John Seibyl;Henryk Barthel

  • Multimodal imaging of brain reorganization in motor areas of the contralesional hemisphere of well recovered patients after capsular stroke

    Christian Gerloff;Khalaf Bushara;Alexandra Sailer;Eric M. Wassermann

  • Modality-specific frontal and parietal areas for auditory and visual spatial localization in humans.

    Khalafalla O. Bushara;Robert A. Weeks;Kenji Ishii;Maria-Jose Catalan

  • Constraint-induced therapy in stroke: magnetic-stimulation motor maps and cerebral activation.

    George F Wittenberg;Robert Chen;Kenji Ishii;Khalafalla O Bushara

  • Aortic Wall Inflammation Due to Takayasu Arteritis Imaged with 18F-FDG PET Coregistered with Enhanced CT

    Yasushi Kobayashi;Kenji Ishii;Keiichi Oda;Tadashi Nariai

  • A PET study of sequential finger movements of varying length in patients with Parkinson's disease.

    Maria Jose Catalan;Kenji Ishii;Manabu Honda;Ali Samii

  • High performance plasma amyloid-beta biomarkers for Alzheimer's disease

    Akinori Nakamura;Naoki Kaneko;Victor L Villemagne;Takashi Kato

  • Database of normal human cerebral blood flow, cerebral blood volume, cerebral oxygen extraction fraction and cerebral metabolic rate of oxygen measured by positron emission tomography with 15O-labelled carbon dioxide or water, carbon monoxide and oxygen: a multicentre study in Japan

    Hiroshi Ito;Iwao Kanno;Chietsugu Kato;Toshiaki Sasaki

  • Usefulness of L-[methyl-11C] methionine-positron emission tomography as a biological monitoring tool in the treatment of glioma.

    Tadashi Nariai;Yoji Tanaka;Hiroaki Wakimoto;Masaru Aoyagi

  • Role of the Nondominant Hemisphere and Undamaged Area During Word Repetition in Poststroke Aphasics A PET Activation Study

    Masashi Ohyama;Michio Senda;Shin Kitamura;Kenji Ishii

  • Low density of sigma1 receptors in early Alzheimer's disease.

    Masahiro Mishina;Masashi Ohyama;Kenji Ishii;Shin Kitamura

  • Function of sigma1 receptors in Parkinson's disease

    M. Mishina;K. Ishiwata;K. Ishii;S. Kitamura

  • High occupancy of sigma-1 receptors in the human brain after single oral administration of fluvoxamine: a positron emission tomography study using [11C]SA4503.

    Masatomo Ishikawa;Kiichi Ishiwata;Kenji Ishii;Yuichi Kimura

  • Vascular Reserve in Chronic Cerebral Ischemia Measured by the Acetazolamide Challenge Test: Comparison with Positron Emission Tomography

    Tadashi Nariai;Ryuta Suzuki;Kimiyoshi Hirakawa;Taketoshi Maehara

  • Expanding the clinical phenotype of SNCA duplication carriers.

    Kenya Nishioka;Owen A. Ross;Kenji Ishii;Jennifer M. Kachergus

  • Extraction of a plasma time-activity curve from dynamic brain PET images based on independent component analysis

    M. Naganawa;Y. Kimura;K. Ishii;K. Oda

  • Adenosine A2A Receptors Measured with [11C]TMSX PET in the Striata of Parkinson's Disease Patients

    Masahiro Mishina;Kiichi Ishiwata;Mika Naganawa;Yuichi Kimura

  • Inter-rater variability of visual interpretation and comparison with quantitative evaluation of 11C-PiB PET amyloid images of the Japanese Alzheimer’s Disease Neuroimaging Initiative (J-ADNI) multicenter study

    Tomohiko Yamane;Kenji Ishii;Muneyuki Sakata;Yasuhiko Ikari

Frequent Co-Authors

Keiichi Oda
Keiichi Oda Hokkaido University of Science
Kengo Ito
Kengo Ito Nagoya University
Takeshi Iwatsubo
Takeshi Iwatsubo University of Tokyo
Mika Naganawa
Mika Naganawa Yale University
Manabu Mochizuki
Manabu Mochizuki Tokyo Medical and Dental University
Takashi Kato
Takashi Kato Nagoya University
Ryozo Kuwano
Ryozo Kuwano Niigata University
Christopher C. Rowe
Christopher C. Rowe University of Melbourne
Marwan N. Sabbagh
Marwan N. Sabbagh Lou Ruvo Brain Institute
Toru Kita
Toru Kita Kyoto University

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