Helka Sahi

454 total citations
11 papers, 169 citations indexed

About

Helka Sahi is a scholar working on Oncology, Electrical and Electronic Engineering and Aerospace Engineering. According to data from OpenAlex, Helka Sahi has authored 11 papers receiving a total of 169 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Oncology, 10 papers in Electrical and Electronic Engineering and 7 papers in Aerospace Engineering. Recurrent topics in Helka Sahi's work include Polyomavirus and related diseases (11 papers), Full-Duplex Wireless Communications (10 papers) and Antenna Design and Analysis (7 papers). Helka Sahi is often cited by papers focused on Polyomavirus and related diseases (11 papers), Full-Duplex Wireless Communications (10 papers) and Antenna Design and Analysis (7 papers). Helka Sahi collaborates with scholars based in Finland, Sweden and Denmark. Helka Sahi's co-authors include Virve Koljonen, Tom Böhling, Harri Sihto, Sakari Knuutila, Eero Pukkala, Suvi Savola, Heikki Mäkisalo, Erkki Tukiainen, Caj Haglund and Heli Kavola and has published in prestigious journals such as British Journal of Cancer, Cancers and Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin.

In The Last Decade

Helka Sahi

11 papers receiving 168 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Helka Sahi Finland	7	155	121	103	29	15	11	169
Julie Paik Australia	4	89 0.6×	73 0.6×	67 0.7×	12 0.4×	11 0.7×	6	136
Austin Anderson United States	5	281 1.8×	219 1.8×	186 1.8×	28 1.0×	33 2.2×	9	300
Tomoko Akaike United States	7	164 1.1×	83 0.7×	75 0.7×	13 0.4×	43 2.9×	21	185
Linda Kubat Germany	5	105 0.7×	37 0.3×	33 0.3×	22 0.8×	12 0.8×	8	131
Andrew Tegeder United States	4	229 1.5×	183 1.5×	166 1.6×	33 1.1×	12 0.8×	6	249
Francisco Bernal-Cano Colombia	3	115 0.7×	83 0.7×	40 0.4×	32 1.1×	13 0.9×	6	134
Luca Carra Italy	5	106 0.7×	30 0.2×	33 0.3×	11 0.4×	8 0.5×	5	118
Sylvia Zelenka-Wang United States	4	28 0.2×	16 0.1×	14 0.1×	5 0.2×	8 0.5×	7	63
Christina Drusio Germany	2	62 0.4×	19 0.2×	16 0.2×	6 0.2×	1 0.1×	3	72
M. Avenel‐Audran France	6	24 0.2×	15 0.1×	14 0.1×	15 0.5×	18 1.2×	14	150

Countries citing papers authored by Helka Sahi

Since Specialization

Citations

This map shows the geographic impact of Helka Sahi'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 Helka Sahi with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Helka Sahi more than expected).

Fields of papers citing papers by Helka Sahi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Helka Sahi. 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 Helka Sahi. The network helps show where Helka Sahi may publish in the future.

Co-authorship network of co-authors of Helka Sahi

This figure shows the co-authorship network connecting the top 25 collaborators of Helka Sahi. A scholar is included among the top collaborators of Helka Sahi 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 Helka Sahi. Helka Sahi is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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11 of 11 papers shown

Sahi, Helka, et al.. (2020). Merkel Cell Carcinoma Treatment in Finland in 1986–2016—A Real-World Data Study. Cancers. 12(5). 1224–1224. 4 indexed citations

Sahi, Helka, et al.. (2018). The expression of terminal deoxynucleotidyl transferase and paired box gene 5 in Merkel cell carcinomas and its relation to the presence of Merkel cell polyomavirus DNA. Journal of Cutaneous Pathology. 46(1). 26–32. 12 indexed citations

Sahi, Helka, Tom Böhling, & Virve Koljonen. (2017). Merkelinsolukarsinooma - mitä uutta?. Työväentutkimus Vuosikirja. 133(24). 2365–2371. 1 indexed citations

Sahi, Helka, Harri Sihto, Miia Artama, et al.. (2016). History of chronic inflammatory disorders increases the risk of Merkel cell carcinoma, but does not correlate with Merkel cell polyomavirus infection. British Journal of Cancer. 116(2). 260–264. 22 indexed citations

Koljonen, Virve, Helka Sahi, Tom Böhling, & Heikki Mäkisalo. (2015). Post-transplant Merkel Cell Carcinoma. Acta Dermato Venereologica. 96(4). 442–447. 18 indexed citations

Koljonen, Virve, Matti Rantanen, Helka Sahi, et al.. (2015). Joint occurrence of Merkel cell carcinoma and non-Hodgkin lymphomas in four Nordic countries. Leukemia & lymphoma. 56(12). 3315–3319. 6 indexed citations

Sahi, Helka, et al.. (2014). miRNA-34a underexpressed in Merkel cell polyomavirus-negative Merkel cell carcinoma. Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin. 466(3). 289–295. 24 indexed citations

Sahi, Helka, Suvi Savola, Harri Sihto, et al.. (2014). RB1gene in Merkel cell carcinoma: hypermethylation in all tumors and concurrent heterozygous deletions in the polyomavirus-negative subgroup. Apmis. 122(12). 1157–1166. 27 indexed citations

Sahi, Helka, Virve Koljonen, Tom Böhling, et al.. (2012). Increased incidence of Merkel cell carcinoma among younger statin users. Cancer Epidemiology. 36(5). 421–424. 17 indexed citations

10.

Sahi, Helka, Virve Koljonen, Heli Kavola, et al.. (2012). Bcl-2 expression indicates better prognosis of Merkel cell carcinoma regardless of the presence of Merkel cell polyomavirus. Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin. 461(5). 553–559. 32 indexed citations

11.

Sahi, Helka, Heli Kukko, Tom Böhling, et al.. (2010). Unusually young Merkel cell carcinoma patients are Merkel cell polyomavirus positive and frequently immunocompromised. European Journal of Plastic Surgery. 33(6). 349–353. 6 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.

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