R.E. Keen

847 total citations
17 papers, 633 citations indexed

About

R.E. Keen is a scholar working on Radiology, Nuclear Medicine and Imaging, Molecular Biology and Cardiology and Cardiovascular Medicine. According to data from OpenAlex, R.E. Keen has authored 17 papers receiving a total of 633 indexed citations (citations by other indexed papers that have themselves been cited), including 10 papers in Radiology, Nuclear Medicine and Imaging, 5 papers in Molecular Biology and 4 papers in Cardiology and Cardiovascular Medicine. Recurrent topics in R.E. Keen's work include Advanced MRI Techniques and Applications (7 papers), Medical Imaging Techniques and Applications (4 papers) and Metabolism and Genetic Disorders (4 papers). R.E. Keen is often cited by papers focused on Advanced MRI Techniques and Applications (7 papers), Medical Imaging Techniques and Applications (4 papers) and Metabolism and Genetic Disorders (4 papers). R.E. Keen collaborates with scholars based in United States, Australia and Russia. R.E. Keen's co-authors include Sung‐Cheng Huang, Jorge R. Barrio, Michael E. Phelps, Jorge R. Barrio, Michael E. Phelps, Herbert Hansen, Carl Selin, Heinrich R. Schelbert, Randall A. Hawkins and John C. Mazziotta and has published in prestigious journals such as Journal of the American College of Cardiology, Circulation Research and Analytical Biochemistry.

In The Last Decade

R.E. Keen

17 papers receiving 606 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
R.E. Keen United States 12 351 135 122 61 61 17 633
J. Katz United States 11 333 0.9× 161 1.2× 301 2.5× 44 0.7× 86 1.4× 26 838
Anne‐Marie L. Seymour United Kingdom 16 241 0.7× 245 1.8× 273 2.2× 30 0.5× 40 0.7× 46 799
Karen C. Rosenspire United States 13 831 2.4× 187 1.4× 513 4.2× 51 0.8× 130 2.1× 28 1.5k
David L. Yudilevich Chile 13 84 0.2× 247 1.8× 89 0.7× 101 1.7× 50 0.8× 22 891
Michiel ten Hove United Kingdom 17 245 0.7× 299 2.2× 381 3.1× 37 0.6× 27 0.4× 24 809
J. S. Ingwall United States 13 250 0.7× 371 2.7× 513 4.2× 39 0.6× 35 0.6× 20 958
Joseph J. Sikora United States 13 87 0.2× 148 1.1× 96 0.8× 18 0.3× 39 0.6× 25 640
Ian A. Bailey United Kingdom 9 211 0.6× 166 1.2× 121 1.0× 32 0.5× 28 0.5× 13 451
Igor Khait United States 13 65 0.2× 291 2.2× 38 0.3× 76 1.2× 27 0.4× 27 545
R Schindler Germany 8 189 0.5× 128 0.9× 199 1.6× 29 0.5× 41 0.7× 24 443

Countries citing papers authored by R.E. Keen

Since Specialization
Citations

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

Fields of papers citing papers by R.E. Keen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of R.E. Keen

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

All Works

17 of 17 papers shown
1.
Barrio, Jorge R., Mohammad Namavari, R.E. Keen, & Nagichettiar Satyamurthy. (1998). The elusive 8-fluoroadenosine. Tetrahedron Letters. 39(40). 7231–7234. 9 indexed citations
2.
3.
Levene, Harold B., et al.. (1990). Characterization of Albunex®. The Journal of the Acoustical Society of America. 87(S1). S69–S70. 2 indexed citations
4.
Keen, R.E., Jorge R. Barrio, Sung‐Cheng Huang, Randall A. Hawkins, & Michael E. Phelps. (1989). In vivo Cerebral Protein Synthesis Rates with Leucyl-Transfer RNA Used as a Precursor Pool: Determination of Biochemical Parameters to Structure Tracer Kinetic Models for Positron Emission Tomography. Journal of Cerebral Blood Flow & Metabolism. 9(4). 429–445. 50 indexed citations
5.
Hawkins, Randall A., Sung‐Cheng Huang, Jorge R. Barrio, et al.. (1989). Estimation of Local Cerebral Protein Synthesis Rates with L-[1-11C]Leucine and PET: Methods, Model, and Results in Animals and Humans. Journal of Cerebral Blood Flow & Metabolism. 9(4). 446–460. 67 indexed citations
6.
Barrio, Jorge R., Nagichettiar Satyamurthy, Sung‐Cheng Huang, et al.. (1989). 3-(2'-[18F]Fluoroethyl)Spiperone: In vivo Biochemical and Kinetic Characterization in Rodents, Nonhuman Primates, and Humans. Journal of Cerebral Blood Flow & Metabolism. 9(6). 830–839. 71 indexed citations
7.
Wyns, W., Markus Schwaiger, Denis B. Buxton, et al.. (1989). Effects of inhibition of fatty acid oxidation on myocardial kinetics of 11C-labeled palmitate.. Circulation Research. 65(6). 1787–1797. 16 indexed citations
8.
Krivokapich, Janine, R.E. Keen, Michael E. Phelps, K. I. Shine, & Jorge R. Barrio. (1987). Effects of anoxia on kinetics of [13N] glutamate and 13NH3 metabolism in rabbit myocardium.. Circulation Research. 60(4). 505–516. 13 indexed citations
9.
Keen, R.E., Janine Krivokapich, Michael E. Phelps, Kenneth I. Shine, & Jorge R. Barrio. (1986). Nitrogen-13 flux from L-[13N]glutamate in the isolated rabbit heart: effect of substrates and transminase inhibition. Biochimica et Biophysica Acta (BBA) - General Subjects. 884(3). 531–544. 5 indexed citations
10.
Schwaiger, Markus, Heinrich R. Schelbert, R.E. Keen, et al.. (1985). Retention and clearance of C-11 palmitic acid in ischemic and reperfused canine myocardium. Journal of the American College of Cardiology. 6(2). 311–320. 74 indexed citations
11.
Jimenez, M., et al.. (1984). Colorimetric Measurement of Glycosylated Protein in Whole Blood, Red Blood Cells, Plasma and Dried Blood. Annals of Clinical Biochemistry International Journal of Laboratory Medicine. 21(6). 477–483. 86 indexed citations
12.
Phelps, Michael E., et al.. (1984). Criteria for the tracer kinetic measurement of cerebral protein synthesis in humans with positron emission tomography. Annals of Neurology. 15(S1). 192–202. 37 indexed citations
13.
Krivokapich, Janine, Jorge R. Barrio, M.E. Phelps, et al.. (1984). Kinetic characterization of 13NH3 and [13N]glutamine metabolism in rabbit heart. American Journal of Physiology-Heart and Circulatory Physiology. 246(2). H267–H273. 18 indexed citations
14.
15.
Schelbert, Heinrich R., E. Henze, R.E. Keen, et al.. (1983). C-11 palmitate for the noninvasive evaluation of regional myocardial fatty acid metabolism with positron-computed tomography. IV. In vivo evaluation of acute demand-induced ischemia in dogs. American Heart Journal. 106(4). 736–750. 58 indexed citations
16.
Barrio, Jorge R., R.E. Keen, Jim Ropchan, et al.. (1983). L-[1-11C]leucine: routine synthesis by enzymatic resolution.. PubMed. 24(6). 515–21. 31 indexed citations
17.
Barrio, Jorge R., S.C. Huang, R.E. Keen, et al.. (1982). Positron-emitting labeled L-amino acids for measurement of protein synthesis. Transactions of the American Nuclear Society. 41. 1 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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