Katja Kojo

468 total citations
20 papers, 301 citations indexed

About

Katja Kojo is a scholar working on Radiological and Ultrasound Technology, Radiology, Nuclear Medicine and Imaging and Dermatology. According to data from OpenAlex, Katja Kojo has authored 20 papers receiving a total of 301 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in Radiological and Ultrasound Technology, 7 papers in Radiology, Nuclear Medicine and Imaging and 4 papers in Dermatology. Recurrent topics in Katja Kojo's work include Radioactivity and Radon Measurements (8 papers), Radiation Dose and Imaging (7 papers) and Skin Protection and Aging (4 papers). Katja Kojo is often cited by papers focused on Radioactivity and Radon Measurements (8 papers), Radiation Dose and Imaging (7 papers) and Skin Protection and Aging (4 papers). Katja Kojo collaborates with scholars based in Finland, Sweden and Denmark. Katja Kojo's co-authors include Anssi Auvinen, ­Eero Pukkala, Päivi Kurttio, Mika Helminen, Niklas Hammar, Vilhjálmur Rafnsson, Tor Haldorsen, Roel Vermeulen, Christoffer Johansen and Hans Kromhout and has published in prestigious journals such as Environment International, International Journal of Cancer and International Journal of Epidemiology.

In The Last Decade

Katja Kojo

17 papers receiving 287 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Katja Kojo Finland 11 79 75 60 57 41 20 301
Mirjana Moser Switzerland 5 55 0.7× 57 0.8× 36 0.6× 106 1.9× 40 1.0× 7 351
Ghazal Mortazavi Iran 11 66 0.8× 37 0.5× 12 0.2× 48 0.8× 1 0.0× 27 298
J E Deadman Canada 8 202 2.6× 48 0.6× 14 0.2× 465 8.2× 15 0.4× 11 624
M. Caldora Italy 7 72 0.9× 83 1.1× 29 0.5× 1 0.0× 9 0.2× 13 226
Karl Gerhard Blaasaas Norway 13 102 1.3× 51 0.7× 32 0.5× 265 4.6× 15 0.4× 21 500
Richard Iriye United States 8 115 1.5× 14 0.2× 24 0.4× 248 4.4× 5 0.1× 10 380
G. Mezei United States 9 127 1.6× 21 0.3× 8 0.1× 354 6.2× 16 0.4× 16 479
Anneli Påhlson Sweden 8 76 1.0× 64 0.9× 13 0.2× 430 7.5× 49 1.2× 8 682
Dana R. Friedman United States 7 94 1.2× 15 0.2× 5 0.1× 314 5.5× 80 2.0× 11 556
Satoko Ito Japan 10 22 0.3× 6 0.1× 6 0.1× 81 1.4× 58 1.4× 62 364

Countries citing papers authored by Katja Kojo

Since Specialization
Citations

This map shows the geographic impact of Katja Kojo's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Katja Kojo with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Katja Kojo more than expected).

Fields of papers citing papers by Katja Kojo

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Katja Kojo. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Katja Kojo. The network helps show where Katja Kojo may publish in the future.

Co-authorship network of co-authors of Katja Kojo

This figure shows the co-authorship network connecting the top 25 collaborators of Katja Kojo. A scholar is included among the top collaborators of Katja Kojo based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Katja Kojo. Katja Kojo is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Kojo, Katja, et al.. (2025). Short-Term Temporal Variability of Radon in Finnish Dwellings and the Use of Temporal Correction Factors. Atmosphere. 16(5). 489–489. 1 indexed citations
2.
Kojo, Katja, et al.. (2023). Radon Exposure Concentrations in Finnish Workplaces. Health Physics. 125(2). 92–101. 4 indexed citations
3.
Nevalainen, Jaakko, et al.. (2022). Lung cancer incidence attributable to residential radon exposure in Finland. Radiation and Environmental Biophysics. 62(1). 35–49. 17 indexed citations
4.
Kojo, Katja, et al.. (2021). Environmental Radiation Monitoring in Finland : Annual report 2020. STM:n Hallinnonalan avoin julkaisuarkisto (Julkari).
5.
Kojo, Katja, et al.. (2021). Radon in Finnish underground mines 2011–2019. Journal of Radiological Protection. 41(4). 619–627. 7 indexed citations
6.
Kojo, Katja, et al.. (2021). IMPROVING THE ASSESSMENT OF OCCUPATIONAL EXPOSURE TO RADON IN ABOVE-GROUND WORKPLACES. Radiation Protection Dosimetry. 196(1-2). 44–52. 10 indexed citations
7.
Tettamanti, Giorgio, Anssi Auvinen, Torbjörn Åkerstedt, et al.. (2020). Long-term effect of mobile phone use on sleep quality: Results from the cohort study of mobile phone use and health (COSMOS). Environment International. 140. 105687–105687. 39 indexed citations
8.
Bly, Ritva, Anne Kiuru, Katja Kojo, et al.. (2020). Suomalaisten keskimääräinen efektiivinen annos vuonna 2018. STM:n Hallinnonalan avoin julkaisuarkisto (Julkari).
9.
Kojo, Katja & Päivi Kurttio. (2020). Indoor Radon Measurements in Finnish Daycare Centers and Schools—Enforcement of the Radiation Act. International Journal of Environmental Research and Public Health. 17(8). 2877–2877. 17 indexed citations
10.
Auvinen, Anssi, Maria Feychting, Anders Ahlbom, et al.. (2019). Headache, tinnitus and hearing loss in the international Cohort Study of Mobile Phone Use and Health (COSMOS) in Sweden and Finland. International Journal of Epidemiology. 48(5). 1567–1579. 34 indexed citations
11.
Toledano, Mireille B., Anssi Auvinen, Giorgio Tettamanti, et al.. (2017). An international prospective cohort study of mobile phone users and health (COSMOS): Factors affecting validity of self-reported mobile phone use. International Journal of Hygiene and Environmental Health. 221(1). 1–8. 12 indexed citations
12.
Kojo, Katja. (2013). Occupational cosmic radiation exposure and cancer in airline cabin crew. Tampere University Institutional Repository (Tampere University). 1 indexed citations
13.
Kojo, Katja, Mika Helminen, ­Eero Pukkala, & Anssi Auvinen. (2013). Risk Factors for Skin Cancer among Finnish Airline Cabin Crew. The Annals of Occupational Hygiene. 57(6). 695–704. 10 indexed citations
14.
Pukkala, ­Eero, Mika Helminen, Tor Haldorsen, et al.. (2012). Cancer incidence among Nordic airline cabin crew. International Journal of Cancer. 131(12). 2886–2897. 46 indexed citations
15.
Kojo, Katja, Tapani Lahtinen, Aarne Oikarinen, et al.. (2008). Reliability and validity of a bioimpedance measurement device in the assessment of UVR damage to the skin. Archives of Dermatological Research. 300(5). 253–261. 6 indexed citations
16.
Oivanen, T., Katja Kojo, Liisa Pylkkänen, Kaija Holli, & Anssi Auvinen. (2007). Early detection of skin cancer as public health policy: Comparison of campaign and routine activity. Preventive Medicine. 46(2). 160–165. 1 indexed citations
17.
Kojo, Katja, et al.. (2007). Estimating the Cosmic Radiation Dose for a Cabin Crew With Flight Timetables. Journal of Occupational and Environmental Medicine. 49(5). 540–545. 10 indexed citations
18.
Kojo, Katja, ­Eero Pukkala, & Anssi Auvinen. (2005). Breast cancer risk among Finnish cabin attendants: a nested case-control study. Occupational and Environmental Medicine. 62(7). 488–493. 60 indexed citations
19.
20.
Kojo, Katja, et al.. (2004). Occupational radiation dose estimation for Finnish aircraft cabin attendants. Scandinavian Journal of Work Environment & Health. 30(2). 157–163. 9 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by Mirjana Moser Breakdown of academic impact, for papers by Ghazal Mortazavi Breakdown of academic impact, for papers by J E Deadman Breakdown of academic impact, for papers by M. Caldora Breakdown of academic impact, for papers by Karl Gerhard Blaasaas Breakdown of academic impact, for papers by Richard Iriye Breakdown of academic impact, for papers by G. Mezei Breakdown of academic impact, for papers by Anneli Påhlson Breakdown of academic impact, for papers by Dana R. Friedman Breakdown of academic impact, for papers by Satoko Ito
Rankless by CCL
2026