S A Koopal

1.7k total citations
9 papers, 167 citations indexed

About

S A Koopal is a scholar working on Oncology, Surgery and Molecular Biology. According to data from OpenAlex, S A Koopal has authored 9 papers receiving a total of 167 indexed citations (citations by other indexed papers that have themselves been cited), including 5 papers in Oncology, 4 papers in Surgery and 2 papers in Molecular Biology. Recurrent topics in S A Koopal's work include Cutaneous Melanoma Detection and Management (4 papers), Nonmelanoma Skin Cancer Studies (2 papers) and Melanoma and MAPK Pathways (2 papers). S A Koopal is often cited by papers focused on Cutaneous Melanoma Detection and Management (4 papers), Nonmelanoma Skin Cancer Studies (2 papers) and Melanoma and MAPK Pathways (2 papers). S A Koopal collaborates with scholars based in Netherlands. S A Koopal's co-authors include Christiaan Hoff, A.T.M.G. Tiebosch, Harald J. Hoekstra, John Th. M. Plukker, Heimen Schraffordt Koops, W. J. H. J. Meijerink, Marc J. van Det, Jean-Pierre E. N. Pierie, E. Christiaan Boerma and Wido Heeman and has published in prestigious journals such as Cancer, Surgical Endoscopy and Scandinavian Journal of Gastroenterology.

In The Last Decade

S A Koopal

9 papers receiving 159 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
S A Koopal Netherlands	5	69	61	37	37	26	9	167
Jennifer Hasenyager Smith United States	9	32 0.5×	62 1.0×	40 1.1×	21 0.6×	17 0.7×	14	293
Lakshmi Ramanathan United States	7	47 0.7×	32 0.5×	32 0.9×	7 0.2×	14 0.5×	8	160
Maximilian Thormann Germany	8	45 0.7×	43 0.7×	64 1.7×	24 0.6×	48 1.8×	42	207
Rebecca K. Viscusi United States	9	62 0.9×	118 1.9×	29 0.8×	20 0.5×	5 0.2×	12	287
S. Yukiko Asaki United States	9	21 0.3×	35 0.6×	21 0.6×	25 0.7×	33 1.3×	22	247
John Organtzis Greece	9	48 0.7×	97 1.6×	22 0.6×	8 0.2×	16 0.6×	20	282
Tomoko Kagawa Japan	9	24 0.3×	28 0.5×	58 1.6×	17 0.5×	37 1.4×	44	250
Mi Tang China	9	40 0.6×	57 0.9×	21 0.6×	11 0.3×	26 1.0×	41	222
Cătălin Constantinescu Romania	7	69 1.0×	18 0.3×	16 0.4×	26 0.7×	9 0.3×	27	186

Countries citing papers authored by S A Koopal

Since Specialization

Citations

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

Fields of papers citing papers by S A Koopal

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by S A Koopal. 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 S A Koopal. The network helps show where S A Koopal may publish in the future.

Co-authorship network of co-authors of S A Koopal

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

All Works

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9 of 9 papers shown

1.

Heeman, Wido, et al.. (2019). Application of laser speckle contrast imaging in laparoscopic surgery. Biomedical Optics Express. 10(4). 2010–2010. 43 indexed citations

2.

Det, Marc J. van, et al.. (2011). The learning effect of intraoperative video-enhanced surgical procedure training. Surgical Endoscopy. 25(7). 2261–2267. 48 indexed citations

3.

Hoff, Christiaan, et al.. (2009). Small intestinal‐colorectal anastomotic fistula developing during endo‐sponge treatment. Colorectal Disease. 12(10Online). e337–8. 2 indexed citations

4.

Koopal, S A, et al.. (2005). Biliary obstruction due to isolated pancreatic tuberculosis.. PubMed. 6(6). 603–4. 1 indexed citations

5.

Koopal, S A, et al.. (2004). Extra nodal growth as a prognostic factor in malignant melanoma. European Journal of Surgical Oncology. 31(1). 88–94. 4 indexed citations

6.

Koopal, S A, A.T.M.G. Tiebosch, P. L. Jager, et al.. (2002). New diagnostic techniques in staging in the surgical treatment of cutaneous malignant melanoma. European Journal of Surgical Oncology. 28(7). 692–700. 15 indexed citations

7.

Koopal, S A, et al.. (2000). Frozen section analysis of sentinel lymph nodes in melanoma patients. Cancer. 89(8). 1720–1725. 1 indexed citations

8.

Koopal, S A, et al.. (2000). Frozen section analysis of sentinel lymph nodes in melanoma patients. Cancer. 89(8). 1720–1725. 48 indexed citations

9.

Koopal, S A, et al.. (1997). Metastasized Malignant Fibrous Histiocytoma as a Cause of Gastrointestinal Tract Haemorrhage. Scandinavian Journal of Gastroenterology. 32(12). 1272–1274. 5 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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