World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Neuroscience 73 2234 2041 13 13 338 16243
Medicine 73 19711 18492 229 215 341 16261
Biology and Biochemistry 65 9308 8588 68 66 237 12851

Riitta Parkkola publications per year

The chart shows the history of publications by Riitta Parkkola between 1992 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Riitta Parkkola published across 35 years, from 1992 to 2026, averaging 10.5 papers a year. Output peaked at 27 publications in 2023. 8 of the 369 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1992 to 2026. Vertical axis: number of publications, 0 to 27. Peak 27 publications in 2023. 1992: 2 publications 1993: 4 publications 1994: 1 publication 1995: 1 publication 1996: 0 publications 1997: 1 publication 1998: 0 publications 1999: 3 publications 2000: 4 publications 2001: 7 publications 2002: 1 publication 2003: 3 publications 2004: 3 publications 2005: 5 publications 2006: 7 publications 2007: 16 publications 2008: 11 publications 2009: 18 publications 2010: 11 publications 2011: 14 publications 2012: 13 publications 2013: 18 publications 2014: 21 publications 2015: 17 publications 2016: 20 publications 2017: 25 publications 2018: 11 publications 2019: 17 publications 2020: 24 publications 2021: 24 publications 2022: 24 publications 2023: 27 publications 2024: 8 publications 2025: 7 publications 2026: 1 publication
1992 2026

369 publications in total across all disciplines

View publications per year as a table
Riitta Parkkola: publications per year, 1992 to 2026
Year Publications
1992 2
1993 4
1994 1
1995 1
1996 0
1997 1
1998 0
1999 3
2000 4
2001 7
2002 1
2003 3
2004 3
2005 5
2006 7
2007 16
2008 11
2009 18
2010 11
2011 14
2012 13
2013 18
2014 21
2015 17
2016 20
2017 25
2018 11
2019 17
2020 24
2021 24
2022 24
2023 27
2024 8
2025 7
2026 1
Total 369
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Riitta Parkkola 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 Riitta Parkkola sits on this spectrum.

No. of scientists
100 200 300 400 500
Bar chart with 86 bars. Horizontal axis: publications, 38–47 to 887+. Vertical axis: number of scientists, 0 to 539. Most scientists, 539, have 98–107 publications. The last bar groups every scientist with 887 publications or more. The highlighted bar, 338–347 publications, is where this scientist sits. 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 scientist 868–877 publications: 3 scientists 878–886 publications: 6 scientists 887+ publications: 100 scientists
38–47 publications 887+

This scientist: 338 publications — 87th percentile

87% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Neuroscience scientists by publication count, Research.com 2026 ranking edition. Based on 9,597 ranked scientists.
Publications Scientists This scientist
38–47 18
48–57 79
58–67 193
68–77 323
78–87 406
88–97 452
98–107 539
108–117 505
118–127 522
128–137 469
138–147 456
148–157 459
158–167 397
168–177 383
178–187 350
188–197 302
198–207 306
208–217 262
218–227 242
228–237 220
238–247 203
248–257 174
258–267 176
268–277 175
278–287 125
288–297 116
298–307 127
308–317 128
318–327 99
328–337 89
338–347 78 338
348–357 96
358–367 66
368–377 59
378–387 65
388–397 54
398–407 48
408–417 49
418–427 34
428–437 31
438–447 30
448–457 31
458–467 36
468–477 40
478–487 35
488–497 30
498–507 23
508–517 26
518–527 20
528–537 23
538–547 20
548–557 20
558–567 17
568–577 14
578–587 20
588–597 20
598–607 19
608–617 18
618–627 17
628–637 11
638–647 11
648–657 11
658–667 8
668–677 7
678–687 11
688–697 10
698–707 4
708–717 6
718–727 5
728–737 5
738–747 9
748–757 9
758–767 3
768–777 7
778–787 7
788–797 6
798–807 2
808–817 2
818–827 7
828–837 0
838–847 9
848–857 3
858–867 1
868–877 3
878–886 6
887+ 100
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Riitta Parkkola 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 Riitta Parkkola sits on this spectrum.

No. of scientists
100 200 300 400 500
Bar chart with 68 bars. Horizontal axis: D-Index, 30–31 to 163+. Vertical axis: number of scientists, 0 to 512. Most scientists, 512, have 46–47 D-Index. The last bar groups every scientist with 163 D-Index or more. The highlighted bar, 72–73 D-Index, is where this scientist sits. 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
30–31 D-Index 163+

This scientist: 73 D-Index — 78th percentile

78% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Neuroscience scientists by D-index, Research.com 2026 ranking edition. Based on 9,597 ranked scientists.
D-Index Scientists This scientist
30–31 42
32–33 172
34–35 296
36–37 435
38–39 459
40–41 456
42–43 467
44–45 478
46–47 512
48–49 435
50–51 425
52–53 418
54–55 392
56–57 357
58–59 334
60–61 328
62–63 260
64–65 278
66–67 239
68–69 250
70–71 210
72–73 200 73
74–75 189
76–77 170
78–79 146
80–81 113
82–83 126
84–85 100
86–87 84
88–89 99
90–91 84
92–93 85
94–95 72
96–97 76
98–99 45
100–101 49
102–103 43
104–105 32
106–107 45
108–109 50
110–111 32
112–113 39
114–115 32
116–117 29
118–119 27
120–121 19
122–123 23
124–125 27
126–127 16
128–129 24
130–131 13
132–133 21
134–135 17
136–137 14
138–139 15
140–141 10
142–143 10
144–145 13
146–147 9
148–149 8
150–151 6
152–153 6
154–155 7
156–157 7
158–159 10
160–161 4
162 8
163+ 100
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Overview

Riitta Parkkola is affiliated with Turku University Hospital in Finland and has a primary focus on medical research with an extensive publication record in the field of medicine. Their work spans various subfields including pediatrics, perinatology and child health, neurology, radiology, nuclear medicine and imaging, cognitive neuroscience, and psychiatry and mental health.

The central topics of Parkkola's research include neonatal and fetal brain pathology, advanced neuroimaging techniques and applications, infant development and preterm care, functional brain connectivity studies, maternal mental health during pregnancy and postpartum, Alzheimer's disease research and treatments, and dementia and cognitive impairment research.

Frequently collaborating with colleagues, Parkkola has coauthored numerous publications alongside researchers such as Jani Saunavaara, Jetro J. Tuulari, Linnéa Karlsson, Hasse Karlsson, and Tuire Lähdesmäki.

Parkkola's research articles are often published in peer-reviewed venues, with multiple contributions to journals such as bioRxiv (Cold Spring Harbor Laboratory), Research Square (Research Square), Frontiers in Neuroscience, European Journal of Neuroscience, and Human Brain Mapping.

Recent notable papers authored or coauthored by Parkkola include:

  • Infant and Child MRI: A Review of Scanning Procedures, 2021, Frontiers in Neuroscience
  • Insulin Resistance Is Associated With Enhanced Brain Glucose Uptake During Euglycemic Hyperinsulinemia: A Large-Scale PET Cohort, 2021, Diabetes Care
  • Prevalence and Risk Factors of Incidental Findings in Brain MRIs of Healthy Neonates-The FinnBrain Birth Cohort Study, 2020, Frontiers in Neurology
  • Newborn amygdalar volumes are associated with maternal prenatal psychological distress in a sex-dependent way, 2020, NeuroImage Clinical
  • Vocal Music Listening Enhances Poststroke Language Network Reorganization, 2021, eNeuro

Best Publications

  • Is emotional contagion special? An fMRI study on neural systems for affective and cognitive empathy.

    Lauri Nummenmaa;Jussi Hirvonen;Riitta Parkkola;Jari K. Hietanen

  • Magnetic resonance imaging of the discs and trunk muscles in patients with chronic low back pain and healthy control subjects

    R. Parkkola;U. Rytökoski;M. Kormano

  • Myocardial Triglyceride Content and Epicardial Fat Mass in Human Obesity: Relationship to Left Ventricular Function and Serum Free Fatty Acid Levels

    Mikko Kankaanpää;Hanna-Riikka Lehto;Jussi P Pärkkä;Markku Komu

  • PET amyloid ligand [11C]PIB uptake is increased in mild cognitive impairment.

    N. M. Kemppainen;S. Aalto;I. A. Wilson;K. Någren

  • Glucose uptake and perfusion in subcutaneous and visceral adipose tissue during insulin stimulation in nonobese and obese humans.

    Kirsi A. Virtanen;Peter Lönnroth;Riitta Parkkola;Pauliina Peltoniemi

  • Noninvasive Diagnosis of Focal Hyperinsulinism of Infancy With [18F]-DOPA Positron Emission Tomography

    Timo Otonkoski;Kirsti Näntö-Salonen;Marko Seppänen;Riitta Veijola

  • Cognitive reserve hypothesis: Pittsburgh Compound B and fluorodeoxyglucose positron emission tomography in relation to education in mild Alzheimer's disease

    Nina M. Kemppainen;Sargo Aalto;Sargo Aalto;Mira Karrasch;Kjell Någren

  • Blunted metabolic responses to cold and insulin stimulation in brown adipose tissue of obese humans

    Janne Orava;Pirjo Nuutila;Pirjo Nuutila;Tommi Noponen;Riitta Parkkola

  • Voxel-based analysis of PET amyloid ligand [11C]PIB uptake in Alzheimer disease

    N. M. Kemppainen;S. Aalto;I. A. Wilson;K. Någren

  • Obesity Is Associated with Decreased μ-Opioid But Unaltered Dopamine D2 Receptor Availability in the Brain

    Henry K. Karlsson;Lauri Tuominen;Jetro J. Tuulari;Jussi Hirvonen

  • Impaired cognitive performance in Parkinson's disease is related to caudate dopaminergic hypofunction and hippocampal atrophy

    Pekka Jokinen;Anna Brück;Sargo Aalto;Sarita Forsback

  • Amyloid PET imaging in patients with mild cognitive impairment: a 2-year follow-up study.

    J Koivunen;N Scheinin;J R Virta;S Aalto

  • Automatic attention orienting by social and symbolic cues activates different neural networks: An fMRI study

    Jari K. Hietanen;Lauri Nummenmaa;Mikko J. Nyman;Riitta Parkkola

  • Fluorine -18 -L-dihydroxyphenylalanine (18F -DOPA) positron emission tomography as a tool to localize an insulinoma or β-cell hyperplasia in adult patients

    Saila Kauhanen;Marko Seppänen;Heikki Minn;Risto Gullichsen

  • Differential Effects of Rosiglitazone and Metformin on Adipose Tissue Distribution and Glucose Uptake in Type 2 Diabetic Subjects

    Kirsi A. Virtanen;Kirsti Hällsten;Riitta Parkkola;Tuula Janatuinen

  • S -Ketamine Anesthesia Increases Cerebral Blood Flow in Excess of the Metabolic Needs in Humans

    Jaakko W. Långsjö;Anu Maksimow;Elina Salmi;Kaike Kaisti

  • Cerebral magnetic resonance imaging and ultrasonography findings after neonatal hypoglycemia.

    Anne Kinnala;Hellevi Rikalainen;Helena Lapinleimu;Riitta Parkkola

  • Human brown adipose tissue [15O]O2 PET imaging in the presence and absence of cold stimulus

    Mueez u Din;Mueez u Din;Juho Raiko;Juho Raiko;Teemu Saari;Teemu Saari;Nobu Kudomi

  • Brain White Matter Expansion in Human Obesity and the Recovering Effect of Dieting

    Lauri T. Haltia;Antti Viljanen;Riitta Parkkola;Nina Kemppainen

  • In Vivo Detection of Diffuse Inflammation in Secondary Progressive Multiple Sclerosis Using PET Imaging and the Radioligand 11C-PK11195

    Eero Rissanen;Jouni Tuisku;Johanna Rokka;Teemu Paavilainen

  • Effect of Weight Loss on Liver Free Fatty Acid Uptake and Hepatic Insulin Resistance

    Antti P. M. Viljanen;Patricia Iozzo;Patricia Iozzo;Ronald Borra;Mikko Kankaanpää

Frequent Co-Authors

Pirjo Nuutila
Pirjo Nuutila Turku University Hospital
Juha O. Rinne
Juha O. Rinne Turku University Hospital
Juhani Knuuti
Juhani Knuuti Turku University Hospital
Valtteri Kaasinen
Valtteri Kaasinen Turku University Hospital
Juho Joutsa
Juho Joutsa Turku University Hospital
Kjell Någren
Kjell Någren Odense University Hospital
Miia Kivipelto
Miia Kivipelto University of Eastern Finland
Tapani Rönnemaa
Tapani Rönnemaa Turku University Hospital
Timo E. Strandberg
Timo E. Strandberg University of Helsinki
Hilkka Soininen
Hilkka Soininen University of Eastern Finland

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