Top 100 Scientists

World Top 100 Scientists 2025

Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (873,864 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection :1
Majid Darroudi
Nanotechnology
Nanomaterials
Nanobiomaterials
Nanbioceramics
Metrics
H-Index
i10 Index
Citation
61
198
13,824
* Rankings
Ranking Based On Selection :2
Ramin Sadeghi
Nuclear Medicine
Sentinel node biopsy
Systematic review
Meta-analysis
Evidence Based Medicine
Metrics
H-Index
i10 Index
Citation
51
172
8,557
* Rankings
Ranking Based On Selection :4
S Rasoul Zakavi
Nuclear Medicine and Molecular Imaging
Thyroidology
Thyroid Cancer
Nuclear Cardiology
Metrics
H-Index
i10 Index
Citation
31
79
6,482
Kayvan Sadri
Radio Immunotherapy & Targeted Therapeutics
Cell Labeling & Stem Cell Homing
Liposome Labeling for Diagnostic & Therapeutic Purposes
Labeling peptide compounds
Metrics
H-Index
i10 Index
Citation
25
36
1,496
Mehdi Momennezhad
Nuclear Medicine
Radiotherapy
Dosimetry
Monte Carlo Simulation
Quantitative Analysis of Medical Images
Metrics
H-Index
i10 Index
Citation
14
19
655
Hosein Azimian
Radiation Biology- Radiosensitivity- Biodosimetry
Metrics
H-Index
i10 Index
Citation
12
13
464
* Rankings
Ranking Based On Selection :10
Emran Askari
Nuclear Medicine
Theranostics
Staphylococcus aureus (formerly)
Microbiology (formerly)
Metrics
H-Index
i10 Index
Citation
12
20
683
Farzaneh Nikparast
Machine Learning
Deep Learning
Medical Imaging
Medical Physics
Metrics
H-Index
i10 Index
Citation
3
2
44
Shabnam Olumi
image processing
radiation therapy
nuclear medicine
scatter correction
attenuation correction
Metrics
H-Index
i10 Index
Citation
2
0
12
Rankings
Ranking Based On Selection: 1
Majid Darroudi
Metrics
H-Index
i10 Index
Citation Counts
61
198
13,824
Nanotechnology
Nanomaterials
Nanobiomaterials
Nanbioceramics
Rankings
Ranking Based On Selection: 2
Ramin Sadeghi
Metrics
H-Index
i10 Index
Citation Counts
51
172
8,557
Nuclear Medicine
Sentinel node biopsy
Systematic review
Meta-analysis
Evidence Based Medicine
Rankings
Ranking Based On Selection: 3
Abolfazl Khajavi Rad
Metrics
H-Index
i10 Index
Citation Counts
32
75
2,707
Rankings
Ranking Based On Selection: 4
S Rasoul Zakavi
Metrics
H-Index
i10 Index
Citation Counts
31
79
6,482
Nuclear Medicine and Molecular Imaging
Thyroidology
Thyroid Cancer
Nuclear Cardiology
Rankings
Ranking Based On Selection: 5
Kayvan Sadri
Metrics
H-Index
i10 Index
Citation Counts
25
36
1,496
Radio Immunotherapy & Targeted Therapeutics
Cell Labeling & Stem Cell Homing
Liposome Labeling for Diagnostic & Therapeutic Purposes
Labeling peptide compounds
Rankings
Ranking Based On Selection: 6
Narjess Ayati
Metrics
H-Index
i10 Index
Citation Counts
14
22
664
Rankings
Ranking Based On Selection: 7
Mehdi Momennezhad
Metrics
H-Index
i10 Index
Citation Counts
14
19
655
Nuclear Medicine
Radiotherapy
Dosimetry
Monte Carlo Simulation
Quantitative Analysis of Medical Images
Rankings
Ranking Based On Selection: 8
Shokouhozaman Soleymanifard
Metrics
H-Index
i10 Index
Citation Counts
12
17
398
Rankings
Ranking Based On Selection: 9
Hosein Azimian
Metrics
H-Index
i10 Index
Citation Counts
12
13
464
Radiation Biology- Radiosensitivity- Biodosimetry
Rankings
Ranking Based On Selection: 10
Emran Askari
Metrics
H-Index
i10 Index
Citation Counts
12
20
683
Nuclear Medicine
Theranostics
Staphylococcus aureus (formerly)
Microbiology (formerly)
Rankings
Ranking Based On Selection: 11
Farzaneh Nikparast
Metrics
H-Index
i10 Index
Citation Counts
3
2
44
Machine Learning
Deep Learning
Medical Imaging
Medical Physics
Rankings
Ranking Based On Selection: 12
Golnoosh Ghooshchi
Metrics
H-Index
i10 Index
Citation Counts
2
2
36
Rankings
Ranking Based On Selection: 13
Shabnam Olumi
Metrics
H-Index
i10 Index
Citation Counts
2
0
12
image processing
radiation therapy
nuclear medicine
scatter correction
attenuation correction
Rankings
Ranking Based On Selection: 14
Niloofar Mohamadian
Metrics
H-Index
i10 Index
Citation Counts
1
1
21
Rankings
Ranking Based On Selection: 15
Omid Baziar
Metrics
H-Index
i10 Index
Citation Counts
1
0
3
Radiotherapy
IORT
Radiation Dosimetery
Rankings
Ranking Based On Selection: 16
Sonia Farhadi
Metrics
H-Index
i10 Index
Citation Counts
1
0
1