Sonja Boyd

427 total citations
22 papers, 310 citations indexed

About

Sonja Boyd is a scholar working on Hepatology, Surgery and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Sonja Boyd has authored 22 papers receiving a total of 310 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Hepatology, 13 papers in Surgery and 13 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Sonja Boyd's work include Liver Diseases and Immunity (17 papers), Gallbladder and Bile Duct Disorders (12 papers) and Cholangiocarcinoma and Gallbladder Cancer Studies (8 papers). Sonja Boyd is often cited by papers focused on Liver Diseases and Immunity (17 papers), Gallbladder and Bile Duct Disorders (12 papers) and Cholangiocarcinoma and Gallbladder Cancer Studies (8 papers). Sonja Boyd collaborates with scholars based in Finland and Sweden. Sonja Boyd's co-authors include Martti Färkkilâ, Kalle Jokelainen, Johanna Arola, Johanna Arola, Harri Mustonen, Andrea Tenca, Pedro A. B. Pereira, Lars Paulín, Velma T. E. Aho and Petri Auvinen and has published in prestigious journals such as SHILAP Revista de lepidopterología, PLoS ONE and American Journal Of Pathology.

In The Last Decade

Sonja Boyd

21 papers receiving 302 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Sonja Boyd Finland 11 184 175 149 104 57 22 310
Akihiro Okano Japan 10 171 0.9× 79 0.5× 149 1.0× 57 0.5× 64 1.1× 43 357
Kazuharu Yamamoto Japan 8 98 0.5× 224 1.3× 31 0.2× 155 1.5× 59 1.0× 18 322
Yasuni Nakanuma Japan 10 278 1.5× 163 0.9× 62 0.4× 123 1.2× 127 2.2× 17 430
Fumihiro Matsuda Japan 10 147 0.8× 252 1.4× 84 0.6× 195 1.9× 84 1.5× 15 381
Yoshinao Tanahashi Japan 8 220 1.2× 175 1.0× 108 0.7× 28 0.3× 121 2.1× 23 324
Jin Sub Choi South Korea 15 334 1.8× 319 1.8× 198 1.3× 135 1.3× 203 3.6× 22 540
Kosuke Suda Japan 7 281 1.5× 125 0.7× 160 1.1× 59 0.6× 172 3.0× 22 375
Heewon Kwak South Korea 9 103 0.6× 56 0.3× 118 0.8× 57 0.5× 76 1.3× 12 275
Yutaka Takahashi Japan 8 118 0.6× 219 1.3× 48 0.3× 98 0.9× 36 0.6× 21 287
Melissa A. Gilbert United States 11 299 1.6× 63 0.4× 209 1.4× 39 0.4× 48 0.8× 16 404

Countries citing papers authored by Sonja Boyd

Since Specialization
Citations

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

Fields of papers citing papers by Sonja Boyd

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Sonja Boyd

This figure shows the co-authorship network connecting the top 25 collaborators of Sonja Boyd. A scholar is included among the top collaborators of Sonja Boyd 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 Sonja Boyd. Sonja Boyd 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.
Boyd, Sonja, Johanna Louhimo, Soili Kytölä, et al.. (2024). Next-generation sequencing improves diagnostic accuracy of imaging and carcinoembryonic antigen alone for pancreatic cystic neoplasms. Pancreatology. 24(8). 1322–1331. 3 indexed citations
2.
Färkkilâ, Martti, Hannu Kautiainen, Kalle Jokelainen, et al.. (2024). The new definition of dominant stricture in primary sclerosing cholangitis: Prevalence and clinical significance. Liver International. 44(9). 2351–2358.
3.
4.
Arola, Johanna, et al.. (2023). The role of serology, liver function tests and imaging in screening of primary sclerosing cholangitis: the HelPSCreen score. Scandinavian Journal of Gastroenterology. 58(12). 1491–1498. 1 indexed citations
5.
Blom, Sami, Anna Knuuttila, Sonja Boyd, et al.. (2023). Deep Learning–Based Image Analysis of Liver Steatosis in Mouse Models. American Journal Of Pathology. 193(8). 1072–1080. 4 indexed citations
6.
Boyd, Sonja, et al.. (2022). Novel histological scoring for predicting disease outcome in primary sclerosing cholangitis. Histopathology. 81(2). 192–204. 8 indexed citations
7.
Boyd, Sonja, et al.. (2022). Automated image analysis of keratin 7 staining can predict disease outcome in primary sclerosing cholangitis. Hepatology Research. 53(4). 322–333. 6 indexed citations
8.
Boyd, Sonja, et al.. (2021). Chronic cholestasis detection by a novel tool: automated analysis of cytokeratin 7-stained liver specimens. Diagnostic Pathology. 16(1). 41–41. 14 indexed citations
9.
Koistinen, Hannu, Sonja Boyd, Johanna Arola, et al.. (2021). Biliary hCGβ Is a Potential Novel Marker for Prediction of Biliary Neoplasia in Primary Sclerosing Cholangitis Patients. SHILAP Revista de lepidopterología. 1(4). 322–329. 1 indexed citations
10.
Tenca, Andrea, Harri Mustonen, Eila Lantto, et al.. (2018). The role of magnetic resonance imaging and endoscopic retrograde cholangiography in the evaluation of disease activity and severity in primary sclerosing cholangitis. Liver International. 38(12). 2329–2339. 23 indexed citations
11.
Hakkarainen, Antti, Reetta Kivisaari, Sonja Boyd, et al.. (2017). Metabolic profile of liver damage in non-cirrhotic virus C and autoimmune hepatitis: A proton decoupled 31 P-MRS study. European Journal of Radiology. 90. 205–211. 6 indexed citations
12.
Pereira, Pedro A. B., Velma T. E. Aho, Johanna Arola, et al.. (2017). Bile microbiota in primary sclerosing cholangitis: Impact on disease progression and development of biliary dysplasia. PLoS ONE. 12(8). e0182924–e0182924. 72 indexed citations
13.
Boyd, Sonja, Kalle Jokelainen, Helena Isoniemi, et al.. (2017). Suspicious brush cytology is an indication for liver transplantation evaluation in primary sclerosing cholangitis. World Journal of Gastroenterology. 23(33). 6147–6154. 13 indexed citations
14.
Hakkarainen, Antti, Reetta Kivisaari, Sonja Boyd, et al.. (2017). 31Phosphorus magnetic resonance spectroscopy of the liver for evaluating inflammation and fibrosis in autoimmune hepatitis. Scandinavian Journal of Gastroenterology. 52(8). 886–892. 6 indexed citations
15.
Boyd, Sonja, et al.. (2016). Value of brush cytology for optimal timing of liver transplantation in primary sclerosing cholangitis. Liver International. 37(5). 735–742. 13 indexed citations
16.
Boyd, Sonja, et al.. (2016). Prognostic value of clinical variables and liver histology for development of fibrosis and cirrhosis in autoimmune hepatitis. Scandinavian Journal of Gastroenterology. 52(3). 321–327. 6 indexed citations
17.
Boyd, Sonja, Harri Mustonen, Andrea Tenca, et al.. (2016). Surveillance of primary sclerosing cholangitis with ERC and brush cytology: risk factors for cholangiocarcinoma. Scandinavian Journal of Gastroenterology. 52(2). 242–249. 21 indexed citations
18.
Kylänpää, Leena, Sonja Boyd, Ari Ristimäki, et al.. (2015). A prospective randomised study of dense Infinity cytological brush versus regularly used brush in pancreaticobiliary malignancy. Scandinavian Journal of Gastroenterology. 51(5). 590–593. 13 indexed citations
19.
Boyd, Sonja, Susanna Virolainen, Jenita Pärssinen, et al.. (2009). MMP‐10 (Stromelysin‐2) and MMP‐21 in human and murine squamous cell cancer. Experimental Dermatology. 18(12). 1044–1052. 21 indexed citations
20.
Boyd, Sonja, et al.. (2007). Differential expression of stromal MMP-1, MMP-9 and TIMP-1 in basal cell carcinomas of immunosuppressed patients and controls. Archiv für Pathologische Anatomie und Physiologie und für Klinische Medicin. 452(1). 83–90. 23 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 Akihiro Okano Breakdown of academic impact, for papers by Kazuharu Yamamoto Breakdown of academic impact, for papers by Yasuni Nakanuma Breakdown of academic impact, for papers by Fumihiro Matsuda Breakdown of academic impact, for papers by Yoshinao Tanahashi Breakdown of academic impact, for papers by Jin Sub Choi Breakdown of academic impact, for papers by Kosuke Suda Breakdown of academic impact, for papers by Heewon Kwak Breakdown of academic impact, for papers by Yutaka Takahashi Breakdown of academic impact, for papers by Melissa A. Gilbert
Rankless by CCL
2026