N. Heyder

1.4k total citations · 1 hit paper
42 papers, 903 citations indexed

About

N. Heyder is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, N. Heyder has authored 42 papers receiving a total of 903 indexed citations (citations by other indexed papers that have themselves been cited), including 31 papers in Surgery, 18 papers in Pulmonary and Respiratory Medicine and 10 papers in Oncology. Recurrent topics in N. Heyder's work include Gallbladder and Bile Duct Disorders (13 papers), Pancreatitis Pathology and Treatment (9 papers) and Pancreatic and Hepatic Oncology Research (8 papers). N. Heyder is often cited by papers focused on Gallbladder and Bile Duct Disorders (13 papers), Pancreatitis Pathology and Treatment (9 papers) and Pancreatic and Hepatic Oncology Research (8 papers). N. Heyder collaborates with scholars based in Germany. N. Heyder's co-authors include Michael Sivak, Charles J. Lightdale, Meinhard Classen, Henryk Dancygier, Laurent Palazzo, José Botet, Kenjiro Yasuda, V. Schusdziarra, Gregory A. Boyce and Thomas Rösch and has published in prestigious journals such as New England Journal of Medicine, The Lancet and Gut.

In The Last Decade

N. Heyder

33 papers receiving 847 citations

Hit Papers

Localization of Pancreatic Endocrine Tumors by Endoscopic... 1992 2026 2003 2014 1992 100 200 300 400
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Localization of Pancreatic Endocrine Tumors by Endoscopic Ultrasonography
    1992 494 citations Thomas Rösch, Charles J. Lightdale et al. New England Journal of Medicine profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
N. Heyder Germany 12 499 442 427 257 172 42 903
Wolfram Wermke Germany 15 322 0.6× 242 0.5× 416 1.0× 184 0.7× 39 0.2× 50 742
Hyo Won Eun South Korea 21 479 1.0× 193 0.4× 510 1.2× 394 1.5× 44 0.3× 38 899
Elias Mallas Greece 15 199 0.4× 310 0.7× 181 0.4× 130 0.5× 122 0.7× 25 621
M.-G. Lee South Korea 14 199 0.4× 175 0.4× 351 0.8× 190 0.7× 58 0.3× 21 775
J M Wihlm France 14 199 0.4× 110 0.2× 566 1.3× 381 1.5× 152 0.9× 39 992
Gaetano Luglio Italy 19 664 1.3× 303 0.7× 739 1.7× 317 1.2× 22 0.1× 80 1.2k
Maria Gabriella Brizi Italy 18 427 0.9× 198 0.4× 1.1k 2.5× 425 1.7× 47 0.3× 37 1.5k
T. Kuroiwa Japan 16 192 0.4× 185 0.4× 408 1.0× 268 1.0× 52 0.3× 35 824
PC Freeny United States 15 166 0.3× 98 0.2× 322 0.8× 226 0.9× 46 0.3× 20 591
Moon-Gyu Lee South Korea 15 161 0.3× 259 0.6× 528 1.2× 304 1.2× 13 0.1× 18 829

Countries citing papers authored by N. Heyder

Since Specialization
Citations

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

Fields of papers citing papers by N. Heyder

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of N. Heyder

This figure shows the co-authorship network connecting the top 25 collaborators of N. Heyder. A scholar is included among the top collaborators of N. Heyder 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 N. Heyder. N. Heyder 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.
Heyder, N., et al.. (2008). Polypoide Läsionen der Gallenblase. DMW - Deutsche Medizinische Wochenschrift. 115(7). 243–247. 11 indexed citations
2.
Ell, Christian, N. Heyder, E Günter, et al.. (2008). Piezoelektrische Lithotripsie von Gallensteinen: Erste klinische Erfahrungen. DMW - Deutsche Medizinische Wochenschrift. 113(39). 1503–1507.
3.
Becker, D., E Günter, Eckart G. Hahn, & N. Heyder. (2008). Darstellung der Tumorvaskularisation von hepatozellulären Karzinomen mit Ultraschall-Angiographie. Ultraschall in der Medizin - European Journal of Ultrasound. 16(3). 109–112.
4.
Schneider, H. T., C. Ell, J Benninger, et al.. (2008). Bildgebende Verfahren vor extrakorporaler Stoßwellenlithotripsie von Gallenblasensteinen. DMW - Deutsche Medizinische Wochenschrift. 116(4). 128–133. 1 indexed citations
5.
Lang, Werner, et al.. (2008). Verlaufskontrolle von Kavaschirmen mit der Farbdopplersonographie. Ultraschall in der Medizin - European Journal of Ultrasound. 15(6). 312–316.
6.
Günter, E, et al.. (2008). Stichkanalmetastase nach sonographisch gezielter Punktion einer mesenterialen Lymphknotenmetastase bei Pancoast-Tumor. DMW - Deutsche Medizinische Wochenschrift. 117(3). 88–90. 2 indexed citations
7.
Becker, D., E Günter, Jörg Marienhagen, et al.. (2008). Diagnostik der Phlebothrombose durch farbkodierte Duplexsonographie: Ein prospektiver Vergleich mit der Phlebographie. DMW - Deutsche Medizinische Wochenschrift. 119(14). 495–500.
8.
Heyder, N., et al.. (2008). Polypoide Läsionen der Gallenblasenwand. DMW - Deutsche Medizinische Wochenschrift. 109(27). 1068–1072. 1 indexed citations
9.
10.
Ernst, Hans, E. G. Hahn, Thomas Balzer, Reinhard Schlief, & N. Heyder. (1996). Color Doppler ultrasound of liver lesions: Signal enhancement after intravenous injection of the ultrasound contrast agent Levovist®. Journal of Clinical Ultrasound. 24(1). 31–35. 71 indexed citations
11.
Rösch, Thomas, Charles J. Lightdale, José Botet, et al.. (1992). Localization of Pancreatic Endocrine Tumors by Endoscopic Ultrasonography. New England Journal of Medicine. 326(26). 1721–1726. 494 indexed citations breakdown →
12.
Ell, C., et al.. (1989). Tissue reactions under piezoelectric shockwave application for the fragmentation of biliary calculi.. Gut. 30(5). 680–685. 26 indexed citations
13.
Ell, Ch., et al.. (1989). Extracorporeal Piezoelectric Shockwave Lithotripsy of Multiple Pancreatic Duct Stones under Ultrasonographic Control. Endoscopy. 21(5). 229–231. 16 indexed citations
14.
Ell, Ch., et al.. (1989). Fragmentation of biliary calculi by means of extracorporeally generated piezoelectric shock waves. Digestive Diseases and Sciences. 34(7). 1006–1010. 17 indexed citations
15.
Heyder, N., Helmut W. Flügel, & Wolfram Domschke. (1988). Catheter Drainage of Pancreatic Pseudocysts into the Stomach. Endoscopy. 20(2). 75–77. 18 indexed citations
16.
Heyder, N.. (1987). Endoscopic ultrasonography of tumours of the oesophagus and the stomach. Surgical Endoscopy. 1(1). 17–23. 11 indexed citations
17.
Lutz, H., et al.. (1987). Ultrasound findings in Crohn's disease and ulcerative colitis: A prospective study. Journal of Clinical Ultrasound. 15(3). 153–163. 78 indexed citations
18.
19.
Heyder, N., et al.. (1983). Endoscopic-Radiological Findings in Metastatic Obstructive Jaundice. Endoscopy. 15(1). 12–15. 1 indexed citations
20.
Lux, G., et al.. (1983). Transgastric sonography in pancreatic diseases.. PubMed. Suppl 2. 465–7. 2 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 Wolfram Wermke Breakdown of academic impact, for papers by Hyo Won Eun Breakdown of academic impact, for papers by Elias Mallas Breakdown of academic impact, for papers by M.-G. Lee Breakdown of academic impact, for papers by J M Wihlm Breakdown of academic impact, for papers by Gaetano Luglio Breakdown of academic impact, for papers by Maria Gabriella Brizi Breakdown of academic impact, for papers by T. Kuroiwa Breakdown of academic impact, for papers by PC Freeny Breakdown of academic impact, for papers by Moon-Gyu Lee
Rankless by CCL
2026