J. R. Siewert

707 total citations
21 papers, 530 citations indexed

About

J. R. Siewert is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, J. R. Siewert has authored 21 papers receiving a total of 530 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Surgery, 9 papers in Pulmonary and Respiratory Medicine and 5 papers in Oncology. Recurrent topics in J. R. Siewert's work include Gastric Cancer Management and Outcomes (8 papers), Esophageal Cancer Research and Treatment (6 papers) and Radiomics and Machine Learning in Medical Imaging (3 papers). J. R. Siewert is often cited by papers focused on Gastric Cancer Management and Outcomes (8 papers), Esophageal Cancer Research and Treatment (6 papers) and Radiomics and Machine Learning in Medical Imaging (3 papers). J. R. Siewert collaborates with scholars based in Germany. J. R. Siewert's co-authors include Heinz Höfler, Tibor Schuster, Karen Becker, H. Nekarda, Kurt Ulm, Jan Friederichs, Matthias Maak, Ralf Gertler, Robert Rosenberg and Karl‐Friedrich Becker and has published in prestigious journals such as Journal of Clinical Oncology, Annals of Surgery and European Journal of Cancer.

In The Last Decade

J. R. Siewert

19 papers receiving 517 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
J. R. Siewert Germany 9 313 252 217 113 83 21 530
M. Barsoum Egypt 7 185 0.6× 146 0.6× 125 0.6× 82 0.7× 65 0.8× 14 490
Francesca Erroi Italy 14 328 1.0× 307 1.2× 189 0.9× 113 1.0× 15 0.2× 32 587
John Theodorus Plukker Netherlands 11 131 0.4× 244 1.0× 161 0.7× 77 0.7× 43 0.5× 26 458
Megumu Fujiwara Japan 10 147 0.5× 117 0.5× 102 0.5× 52 0.5× 38 0.5× 37 389
Agustín Seoane Spain 13 257 0.8× 189 0.8× 204 0.9× 151 1.3× 13 0.2× 40 524
Hongyu Wu United States 3 252 0.8× 163 0.6× 501 2.3× 101 0.9× 10 0.1× 4 661
Pemberton Jh United States 7 362 1.2× 254 1.0× 119 0.5× 95 0.8× 44 0.5× 13 494
Wen‐Yih Liang Taiwan 10 202 0.6× 153 0.6× 80 0.4× 103 0.9× 17 0.2× 17 353
M. Boisserie-Lacroix France 12 135 0.4× 88 0.3× 99 0.5× 239 2.1× 151 1.8× 55 478
Osamu Nakahara Japan 13 232 0.7× 183 0.7× 133 0.6× 61 0.5× 18 0.2× 42 392

Countries citing papers authored by J. R. Siewert

Since Specialization
Citations

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

Fields of papers citing papers by J. R. Siewert

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. R. Siewert. 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 J. R. Siewert. The network helps show where J. R. Siewert may publish in the future.

Co-authorship network of co-authors of J. R. Siewert

This figure shows the co-authorship network connecting the top 25 collaborators of J. R. Siewert. A scholar is included among the top collaborators of J. R. Siewert 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 J. R. Siewert. J. R. Siewert 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.
Lorenzen, Sylvie, Stephanie V. Blank, K. Becker, et al.. (2011). Prediction of response and prognosis by a score including only pretherapeutic parameters in 410 neoadjuvant treated gastric cancer patients.. Journal of Clinical Oncology. 29(15_suppl). 4037–4037. 1 indexed citations
2.
Lorenzen, Sylvie, Benjamin Panzram, R. Rosenberg, et al.. (2010). Prognostic significance of free peritoneal tumor cells in the peritoneal cavity before and after neoadjuvant chemotherapy in patients with gastric cancer undergoing a potentially curative resection.. Journal of Clinical Oncology. 28(15_suppl). 4156–4156. 1 indexed citations
3.
Sendler, A. & J. R. Siewert. (2008). Aktuelle Therapie des Magenkarzinoms. DMW - Deutsche Medizinische Wochenschrift. 125(12). 359–362.
4.
Rosenberg, Robert, Jan Friederichs, Tibor Schuster, et al.. (2008). Prognosis of Patients With Colorectal Cancer Is Associated With Lymph Node Ratio. Annals of Surgery. 248(6). 968–978. 215 indexed citations
5.
Herrmann, Ken, Katja Ott, Andreas K. Buck, et al.. (2007). Imaging Gastric Cancer with PET and the Radiotracers 18F-FLT and 18F-FDG: A Comparative Analysis. Journal of Nuclear Medicine. 48(12). 1945–1950. 90 indexed citations
6.
Bumm, R., Marcus Feith, Florian Lordick, Peter Herschbach, & J. R. Siewert. (2007). Impact of multidisciplinary tumor boards on diagnosis and treatment of esophageal cancer. European surgery. Supplement/European surgery. 39(3). 136–140. 30 indexed citations
7.
Engel, Jutta, Jacqueline Kerr, Renate Eckel, et al.. (2005). Influence of hospital volume on local recurrence and survival in a population sample of rectal cancer patients. European Journal of Surgical Oncology. 31(5). 512–520. 28 indexed citations
8.
Lordick, Florian, Katja Ott, Wolfgang Weber, et al.. (2005). Individualized indication for neoadjuvant treatment based on metabolic response Assessed by 18-fluorodeoxyglucose positron emission tomography (FDG-PET) in adenocarcinoma of the esophago-gastric junction (AEG). Journal of Clinical Oncology. 23(16_suppl). 4041–4041. 3 indexed citations
9.
Stein, H. J., Burkhard H.A. von Rahden, Heinz Höfler, & J. R. Siewert. (2003). [Carcinoma of the oesophagogastric junction and Barrett's esophagus: an almost clear oncologic model?].. PubMed. 74(8). 703–8. 8 indexed citations
10.
Rahden, Burkhard H.A. von, H. J. Stein, Robert E. Reiter, Ingrid Becker, & J. R. Siewert. (2003). Delayed aortic rupture after radiochemotherapy and esophagectomy for esophageal cancer. Diseases of the Esophagus. 16(4). 346–349. 3 indexed citations
11.
Höfler, Heinz, M. Stolte, Ell C, et al.. (2003). Early Carcinomas of the Upper GI-Tract, Abstract 339–346, Symposium. Pathology - Research and Practice. 199(4). 267–269. 1 indexed citations
12.
Wieder, Hinrich, Katja Ott, Frank Zimmermann, et al.. (2002). PET imaging with [11C]methyl-L-methionine for therapy monitoring in patients with rectal cancer. European Journal of Nuclear Medicine and Molecular Imaging. 29(6). 789–796. 23 indexed citations
13.
Stier, A., H. J. Stein, J. R. Siewert, & Markus Schwaiger. (2000). Image processing in esophageal scintigraphy: topography of transit times. Diseases of the Esophagus. 13(2). 152–160. 6 indexed citations
14.
Sendler, A., H. J. Stein, U. Fink, & J. R. Siewert. (2000). Neue Therapieansätze bei Tumoren des oberen Gastrointestinaltrakts (Oesophagus, Magen). Der Chirurg. 71(12). 1447–1457. 3 indexed citations
15.
Schröder, Wolfgang, et al.. (1997). Duodenal microgastrinomas associated with Zollinger-Ellison syndrome.. PubMed. 43(12). 1465–9. 13 indexed citations
16.
Schröder, Wolfgang, et al.. (1996). [Surgical therapy of gastrinoma with associated Zollinger-Ellison syndrome].. PubMed. 34(8). 465–72. 2 indexed citations
17.
Keller, Gisela, Michael C. Rotter, H. Vogelsang, et al.. (1995). Microsatellite instability in adenocarcinomas of the upper gastrointestinal tract. Relation to clinicopathological data and family history.. PubMed. 147(3). 593–600. 79 indexed citations
18.
Siewert, J. R.. (1993). Prognostic factors in esophageal carcinoma. European Journal of Cancer. 29. S29–S29. 1 indexed citations
19.
Roder, J. D. & J. R. Siewert. (1992). [Analysis of prognosis-associated factors in pancreatic head and peri-ampullary cancer].. PubMed. 63(5). 410–5. 5 indexed citations
20.
Müller‐Lissner, S., et al.. (1981). Duodenogastric reflux in the fasting dog: role of pylorus and duodenal motility. American Journal of Physiology-Gastrointestinal and Liver Physiology. 241(2). G159–G162. 15 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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