Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: Scientists Last 6 years Citation Index, Universities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025
* Total Citation Counts Rankings
Ranking Based On Selection :1
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,601
1,483
0.322
* Total Citation Counts Rankings
Ranking Based On Selection :2
Medical Physics
Medical Imaging
Radionuclide imaging
PET
SPECT
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,706
491
0.288
* Total Citation Counts Rankings
Ranking Based On Selection :3
Medical Physics
Detectors
X-ray sources
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10
10
1.000
Stephen Keevil
King's College London
London, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,601
1,483
0.322
Lefteris Livieratos
King's College London
London, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,706
491
0.288
Medical Physics
Medical Imaging
Radionuclide imaging
PET
SPECT
Thomas Primidis
King's College London
London, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10
10
1.000
Medical Physics
Detectors
X-ray sources