Keiko Nojima

494 total citations
19 papers, 391 citations indexed

About

Keiko Nojima is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Cardiology and Cardiovascular Medicine. According to data from OpenAlex, Keiko Nojima has authored 19 papers receiving a total of 391 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Surgery, 8 papers in Pulmonary and Respiratory Medicine and 6 papers in Cardiology and Cardiovascular Medicine. Recurrent topics in Keiko Nojima's work include Congenital Heart Disease Studies (5 papers), Kawasaki Disease and Coronary Complications (4 papers) and Cardiac Structural Anomalies and Repair (4 papers). Keiko Nojima is often cited by papers focused on Congenital Heart Disease Studies (5 papers), Kawasaki Disease and Coronary Complications (4 papers) and Cardiac Structural Anomalies and Repair (4 papers). Keiko Nojima collaborates with scholars based in Japan and Pakistan. Keiko Nojima's co-authors include Ken Ueda, Akihiro Saito, Hiroyuki Nakano, Atsuyoshi Takao, Y Imai, Mitsuru Nakazawa, Toshio Nakanishi, Hiromi Kurosawa, Masaharu Sumii and Ken Haruma and has published in prestigious journals such as Circulation, Gastroenterology and The American Journal of Cardiology.

In The Last Decade

Keiko Nojima

18 papers receiving 361 citations

Peers

Keiko Nojima

SURGE

PRM

CCM

EPIDE

Masahiko Kuinose Japan

Luigi D’Orsogna Australia

Pacifico Ad

Lawrence H. Cohn United States

Ashby B. Taylor United States

Katsunori Tatara Japan

H.‐H. Sievers Germany

Robert L. Hynecek United States

M Kaneko Japan

Murat Özeren Türkiye

Masahiko Kuinose Japan

Keiko Nojima

251 ×0.8

SURGE

177 ×0.6

PRM

196 ×1.3

CCM

80 ×1.0

EPIDE

36 ×1.4

Citations per year, relative to Keiko Nojima Keiko Nojima (= 1×) peers Masahiko Kuinose

Countries citing papers authored by Keiko Nojima

Since Specialization

Citations

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

Fields of papers citing papers by Keiko Nojima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Keiko Nojima

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

All Works

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19 of 19 papers shown

Saito, Hisamitsu, et al.. (2009). Influence of Dorsal Hippocampal Stimulation and Dorsal Fornix Lesions on Hepatic Glucose Metabolism in Rabbits. Experimental and Clinical Endocrinology & Diabetes. 96(4). 113–116.

Sumii, Koji, Masanori Kawano, Keiko Nojima, et al.. (2003). Gastric juice nitrite and vitamin C in patients with gastric cancer and atrophic gastritis. European Journal of Gastroenterology & Hepatology. 15(9). 987–993. 26 indexed citations

Sumii, Koji, Masanori Kawano, Keiko Nojima, et al.. (2002). Helicobacter pylori Infection Increases Serum Nitrate and Nitrite More Prominently Than Serum Pepsinogens. Helicobacter. 7(1). 9–13. 10 indexed citations

Nojima, Keiko, Koji Sumii, Masaharu Sumii, et al.. (2000). Acid-Sensitive and Alkaline-Sensitive Sensory Neurons Regulate pH Dependent Gastrin Secretion in Rat. Digestive Diseases and Sciences. 45(6). 1217–1226. 10 indexed citations

Kawano, Masanori, Koji Sumii, Kotaro Kodama, et al.. (1998). Role of nitric oxide in lipopolysaccharide-induced inhibition of gastric gastrin secretion. Gastroenterology. 114. A172–A172. 1 indexed citations

Sakamoto, Kisaburo, et al.. (1991). [Absent pulmonary valve syndrome: surgical approach for the worst group included in symptomatic neonates].. PubMed. 44(4). 273–8; discussion 278. 3 indexed citations

Nakazawa, Mitsuru, Hiroshi Katayama, Y Imai, et al.. (1991). A quantitative analysis of hemodynamic effects of the right ventricle included in the circulation of the Fontan procedure.. Circulation. 83(3). 822–826. 10 indexed citations

Nakanishi, Toshio, et al.. (1989). Inotropic effect of phenylephrine and myocardial alpha-adrenergic receptor in newborn and adult animals. Journal of Molecular and Cellular Cardiology. 21(10). 975–985. 14 indexed citations

Nakazawa, Mitsuru, Kotaro Oyama, Y Imai, et al.. (1988). Criteria for two-staged arterial switch operation for simple transposition of great arteries.. Circulation. 78(1). 124–131. 28 indexed citations

10.

Nakazawa, Mitsuru, Keiko Nojima, Hidenobu Okuda, et al.. (1987). Flow dynamics in the main pulmonary artery after the Fontan procedure in patients with tricuspid atresia or single ventricle.. Circulation. 75(6). 1117–1123. 25 indexed citations

11.

Saito, Akihiro, et al.. (1986). Clinical characteristics of myocardial infarction following Kawasaki disease: Report of 11 cases. The Journal of Pediatrics. 108(2). 198–203. 40 indexed citations

12.

Nojima, Keiko, et al.. (1986). The applicability of noninvasive his bundle electrogram to assessing the effect of digitalis on atrioventricular conduction. Clinical Cardiology. 9(5). 203–208. 1 indexed citations

13.

Nakano, Hiroyuki, Keiko Nojima, Akihiro Saito, & Ken Ueda. (1985). High incidence of aortic regurgitation following Kawasaki disease. The Journal of Pediatrics. 107(1). 59–63. 38 indexed citations

14.

Nakano, Hiroyuki, Ken Ueda, Akihiro Saito, & Keiko Nojima. (1985). Left ventricular systolic function in children with coronary arterial lesion following Kawasaki disease. Heart and Vessels. 1(2). 89–93. 11 indexed citations

15.

Nakano, Hiroyuki, Ken Ueda, Akihiro Saito, & Keiko Nojima. (1985). Repeated quantitative angiograms in coronary arterial aneurysm in Kawasaki disease. The American Journal of Cardiology. 56(13). 846–851. 139 indexed citations

16.

Nojima, Keiko, K. Otsuka, K. Seto, & Hiroki Mori. (1985). Noninvasive recording of his bundle electrograms using vectorial leads system. Clinical Cardiology. 8(1). 11–18. 4 indexed citations

17.

Matsuo, Yoshimi, et al.. (1984). Biomechanical study of a knee-ankle-foot-orthosis for hemiplegic patients. Prosthetics and Orthotics International. 8(2). 97–99. 12 indexed citations

18.

Ueda, Ken, Keiko Nojima, Akihiro Saito, et al.. (1984). Modified blalock-taussig shunt operation without cardiac catheterization: Two-dimensional echocardiographic preoperative assessment in cyanotic infants. The American Journal of Cardiology. 54(10). 1296–1299. 16 indexed citations

19.

Saito, Aya, Keiko Nojima, K. Uéda, & Hirofumi Nakano. (1982). New approach to visualize the left coronary artery using two-dimensional echocardiography.. PubMed. 12(4). 963–71. 3 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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