Kaja Ludwig

1.4k total citations
59 papers, 893 citations indexed

About

Kaja Ludwig is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, Kaja Ludwig has authored 59 papers receiving a total of 893 indexed citations (citations by other indexed papers that have themselves been cited), including 41 papers in Surgery, 23 papers in Pulmonary and Respiratory Medicine and 17 papers in Oncology. Recurrent topics in Kaja Ludwig's work include Gastric Cancer Management and Outcomes (13 papers), Colorectal Cancer Surgical Treatments (11 papers) and Gastrointestinal Tumor Research and Treatment (11 papers). Kaja Ludwig is often cited by papers focused on Gastric Cancer Management and Outcomes (13 papers), Colorectal Cancer Surgical Treatments (11 papers) and Gastrointestinal Tumor Research and Treatment (11 papers). Kaja Ludwig collaborates with scholars based in Germany, United States and Austria. Kaja Ludwig's co-authors include Günther Klautke, Dietmar Lorenz, J. Bernhardt, Friedrich Prall, Thomas Foitzik, Hans‐Michael Steffen, E. Klar, Rainer Fietkau, Ute Küchenmeister and Georg Kähler and has published in prestigious journals such as Journal of Clinical Oncology, British Journal of Cancer and Gastrointestinal Endoscopy.

In The Last Decade

Kaja Ludwig

54 papers receiving 859 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Kaja Ludwig Germany 16 680 448 354 189 68 59 893
Martine Goergen Luxembourg 14 754 1.1× 555 1.2× 389 1.1× 186 1.0× 34 0.5× 42 1.1k
P Tondelli Switzerland 16 849 1.2× 379 0.8× 364 1.0× 91 0.5× 64 0.9× 73 1.0k
Tarek Debs France 16 663 1.0× 242 0.5× 120 0.3× 132 0.7× 24 0.4× 55 778
Masayuki Hotokezaka Japan 16 424 0.6× 185 0.4× 145 0.4× 94 0.5× 42 0.6× 61 597
Graciela Valero-Navarro Spain 14 817 1.2× 211 0.5× 535 1.5× 44 0.2× 31 0.5× 33 998
Manousos Christodoulakis Greece 16 573 0.8× 78 0.2× 192 0.5× 60 0.3× 26 0.4× 42 702
Mario Solej Italy 15 379 0.6× 253 0.6× 178 0.5× 71 0.4× 61 0.9× 40 565
Nathaniel J. Soper United States 6 567 0.8× 494 1.1× 216 0.6× 56 0.3× 133 2.0× 8 725
Andrew Hindmarsh United Kingdom 12 600 0.9× 362 0.8× 75 0.2× 192 1.0× 27 0.4× 22 703
R. Timmer Netherlands 15 779 1.1× 224 0.5× 427 1.2× 366 1.9× 23 0.3× 32 924

Countries citing papers authored by Kaja Ludwig

Since Specialization
Citations

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

Fields of papers citing papers by Kaja Ludwig

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kaja Ludwig

This figure shows the co-authorship network connecting the top 25 collaborators of Kaja Ludwig. A scholar is included among the top collaborators of Kaja Ludwig 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 Kaja Ludwig. Kaja Ludwig 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.
Ludwig, Kaja, et al.. (2020). Evidenz in der minimal-invasiven onkologischen Chirurgie des Magens. Der Chirurg. 92(4). 304–315. 1 indexed citations
2.
Mönig, Stefan, Katja Ott, Ines Gockel, et al.. (2020). S3-Leitlinie Magenkarzinom – Diagnostik und Therapie der Adenokarzinome des Magens und ösophagogastralen Übergangs. Der Chirurg. 91(1). 37–40. 20 indexed citations
3.
Ludwig, Kaja, et al.. (2019). Appendektomie: offen vs. laparoskopisch vs. Single-Port: Evidenz der operativen Verfahrenswahl. Chirurg. 90(3). 186–193.
4.
Schneider‐Burrus, Sylke, et al.. (2014). Clinical NOTES appendectomy study: comparison of transvaginal NOTES appendectomy in hybrid technique with laparoscopic appendectomy. International Journal of Colorectal Disease. 30(2). 259–267. 11 indexed citations
5.
6.
Patrzyk, Maciej, et al.. (2013). Improved laparoscopic treatment of symptomatic urachal anomalies. World Journal of Urology. 31(6). 1475–1481. 10 indexed citations
7.
Schober, Hans‐Christof, et al.. (2012). Radiograph-Based Study of Gender-Specific Vertebral Area Gain in Healthy Children and Adolescents as a Function of Age, Height, and Weight. Journal of Clinical Densitometry. 15(4). 443–453. 1 indexed citations
8.
Ludwig, Kaja, et al.. (2011). Minimal-invasive Magenchirurgie. Der Chirurg. 83(1). 16–22. 2 indexed citations
9.
Raue, Wieland, Corinna Langelotz, Vittorio Paolucci, et al.. (2010). Problems of randomization to open or laparoscopic sigmoidectomy for diverticular disease. International Journal of Colorectal Disease. 26(3). 369–375. 6 indexed citations
10.
Bernhardt, J., et al.. (2009). Chirurgische Perspektiven in der NOTES-Entwicklung. 25(3). 144–147.
11.
Stroh, Christine, Dieter Birk, Miriam Frenken, et al.. (2008). Studie zur Qualitätskontrolle der operativen Therapie der Adipositas – Ergebnisse der Jahre 2005 und 2006. Zentralblatt für Chirurgie - Zeitschrift für Allgemeine Viszeral- Thorax- und Gefäßchirurgie. 133(5). 473–478. 10 indexed citations
12.
Fietkau, Rainer, M Barten, Günther Klautke, et al.. (2006). Postoperative Chemotherapy May Not Be Necessary for Patients With ypN0-Category After Neoadjuvant Chemoradiotherapy of Rectal Cancer. Diseases of the Colon & Rectum. 49(9). 1284–1292. 84 indexed citations
13.
Klautke, Günther, Ute Küchenmeister, Thomas Foitzik, et al.. (2006). Concurrent chemoradiation with capecitabine and weekly irinotecan as preoperative treatment for rectal cancer: results from a phase I/II study. British Journal of Cancer. 94(7). 976–981. 64 indexed citations
14.
Ludwig, Kaja, et al.. (2005). Minimally invasive and local treatment for mucosal early gastric cancer. Surgical Endoscopy. 19(10). 1362–1366. 50 indexed citations
15.
Bernhardt, J., H Bernhardt, M Knoke, & Kaja Ludwig. (2004). Influence of voriconazole and fluconazole on reconstituted multilayered oesophageal epithelium infected by Candida albicans. Mycoses. 47(7). 330–337. 5 indexed citations
16.
Klautke, Günther, Thomas Foitzik, Kaja Ludwig, E. Klar, & Rainer Fietkau. (2004). Intensified neoadjuvant chemoradiotherapy (CRT) with capecitabine and irinotecan in patients with locally advanced rectal cancer (LARC): A phase I/II study. Journal of Clinical Oncology. 22(14_suppl). 3693–3693. 8 indexed citations
17.
Bernhardt, J., Kaja Ludwig, H. Ptok, et al.. (2003). Minimalinvasive Optionen bei Magentumoren. Zentralblatt für Chirurgie - Zeitschrift für Allgemeine Viszeral- Thorax- und Gefäßchirurgie. 128(7). 566–572.
18.
Steffen, Hans‐Michael, et al.. (2003). Laparoskopische Behandlung eines Dünndarmileus mit mehrfacher Invagination, Volvulus und Appendizitis bei Meckel'schem Divertikel. Zentralblatt für Chirurgie - Zeitschrift für Allgemeine Viszeral- Thorax- und Gefäßchirurgie. 128(2). 99–101. 4 indexed citations
19.
Ludwig, Kaja, J. Bernhardt, Hans‐Michael Steffen, & Dietmar Lorenz. (2002). Contribution of intraoperative cholangiography to incidence and outcome of common bile duct injuries during laparoscopic cholecystectomy. Surgical Endoscopy. 16(7). 1098–1104. 102 indexed citations
20.
Ludwig, Kaja, et al.. (2002). Prospektive Analyse zur Outcomebewertung nach laparoskopischer versus konventioneller Cholecystektomie. Zentralblatt für Chirurgie - Zeitschrift für Allgemeine Viszeral- Thorax- und Gefäßchirurgie. 127(1). 41–46. 8 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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