J Koops

1.4k total citations · 1 hit paper
9 papers, 1.1k citations indexed

About

J Koops is a scholar working on Cardiology and Cardiovascular Medicine, Pulmonary and Respiratory Medicine and Surgery. According to data from OpenAlex, J Koops has authored 9 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 4 papers in Cardiology and Cardiovascular Medicine, 3 papers in Pulmonary and Respiratory Medicine and 2 papers in Surgery. Recurrent topics in J Koops's work include Phonocardiography and Auscultation Techniques (3 papers), Hemodynamic Monitoring and Therapy (2 papers) and Nuclear physics research studies (2 papers). J Koops is often cited by papers focused on Phonocardiography and Auscultation Techniques (3 papers), Hemodynamic Monitoring and Therapy (2 papers) and Nuclear physics research studies (2 papers). J Koops collaborates with scholars based in Netherlands and United States. J Koops's co-authors include Jan Baan, Arjan D. van Dijk, Enno T. van der Velde, Joan M. Senden, G. Smeenk, B. Buis, Hein G. de Bruin, P.W.M. Glaudemans, Rudolf J. Moene and Peter L. M. Kerkhof and has published in prestigious journals such as Circulation, Cardiovascular Research and The European Physical Journal A.

In The Last Decade

J Koops

7 papers receiving 1.1k citations

Hit Papers

align trajectories

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.

Continuous measurement of left ventricular volume in animals and humans by conductance catheter.

1984 728 citations Jan Baan, Enno T. van der Velde et al. Circulation profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
J Koops Netherlands	6	705	336	215	142	113	9	1.1k
Karl Q. Schwarz United States	20	553 0.8×	277 0.8×	618 2.9×	441 3.1×	90 0.8×	67	1.5k
Lorie R. Pelc United States	16	344 0.5×	478 1.4×	108 0.5×	361 2.5×	13 0.1×	35	1.2k
Peter W. Pflugfelder Canada	22	705 1.0×	819 2.4×	305 1.4×	316 2.2×	16 0.1×	49	1.4k
José Dizon United States	23	1.6k 2.3×	530 1.6×	258 1.2×	344 2.4×	26 0.2×	77	1.9k
George J. Taylor United States	26	1.5k 2.1×	725 2.2×	298 1.4×	1.1k 8.0×	21 0.2×	51	2.5k
W. Küpper Germany	18	538 0.8×	246 0.7×	157 0.7×	352 2.5×	15 0.1×	90	1000
William H. Lee Mexico	25	158 0.2×	264 0.8×	186 0.9×	27 0.2×	337 3.0×	83	1.9k
J Sipponen Finland	20	87 0.1×	374 1.1×	147 0.7×	413 2.9×	102 0.9×	50	1.2k
José Katz United States	19	664 0.9×	113 0.3×	54 0.3×	493 3.5×	48 0.4×	30	1.1k
THOMAS W. MOIR United States	14	421 0.6×	177 0.5×	103 0.5×	237 1.7×	5 0.0×	26	694

Countries citing papers authored by J Koops

Since Specialization

Citations

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

Fields of papers citing papers by J Koops

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of J Koops

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

All Works

Sort: Min cites: Since: Top N: Style:

9 of 9 papers shown

1.

Koops, J, et al.. (1988). Origin of the components of the first heart sound studied by biaxial esophageal phonocardiography.. PubMed. 43(3). 283–7.

2.

Koops, J, et al.. (1987). Investigation of Cardiovascular Sound withEsophageal Phonocardiography. American Journal of Noninvasive Cardiology. 1(6). 360–368.

3.

Koops, J, et al.. (1986). Technical aspects and clinical results of an esophageal pick-up for better recording of posteriorly generated heart sounds.. PubMed. 11(1). 5–15. 1 indexed citations

4.

Baan, Jan, Enno T. van der Velde, Hein G. de Bruin, et al.. (1984). Continuous measurement of left ventricular volume in animals and humans by conductance catheter.. Circulation. 70(5). 812–823. 728 indexed citations breakdown →

5.

Baan, Jan, Peter L. M. Kerkhof, Rudolf J. Moene, et al.. (1981). Continuous stroke volume and cardiac output from intra-ventricular dimensions obtained with impedance catheter. Cardiovascular Research. 15(6). 328–334. 226 indexed citations

6.

Meyer, R. A., et al.. (1978). Multiparticle configurations in the odd-neutron nucleiNi61andZn67populated by decay ofCu61,Cu67, andGa67. Physical Review C. 17(5). 1822–1831. 15 indexed citations

7.

Koops, J & P.W.M. Glaudemans. (1977). Shell-model calculations on Ni and Cu isotopes. The European Physical Journal A. 280(2). 181–209. 109 indexed citations

8.

Koops, J, et al.. (1970). Circulatory effects of body acceleration given synchronously with the heart beat (BASH).. PubMed. 26. 180–7. 7 indexed citations

9.

Koops, J, et al.. (1967). Photo-analysis of the condition of implanted pacemakers and electrode circuits. I.. PubMed. 70(4). 419–33 contd. 12 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