Hiroki Okada

425 total citations
35 papers, 278 citations indexed

About

Hiroki Okada is a scholar working on Surgery, Gastroenterology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Hiroki Okada has authored 35 papers receiving a total of 278 indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Surgery, 20 papers in Gastroenterology and 7 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Hiroki Okada's work include Gastroesophageal reflux and treatments (16 papers), Esophageal and GI Pathology (11 papers) and Eosinophilic Esophagitis (7 papers). Hiroki Okada is often cited by papers focused on Gastroesophageal reflux and treatments (16 papers), Esophageal and GI Pathology (11 papers) and Eosinophilic Esophagitis (7 papers). Hiroki Okada collaborates with scholars based in Japan, Philippines and United States. Hiroki Okada's co-authors include Haruhiro Inoue, Hironari Shiwaku, Jiro Fujita, Jiro Takahara, Suguru Hasegawa, Tsutomu Araki, Kyoko Yokota, Yoko Fukunaga, Takashi Kondo and Keiichi Ishigame and has published in prestigious journals such as SHILAP Revista de lepidopterología, Gastroenterology and FEBS Letters.

In The Last Decade

Hiroki Okada

30 papers receiving 272 citations

Peers

Hiroki Okada

SURGE

GASTR

PRM

PHYSI

Orly Eshach‐Adiv Israel

B. Germanà Italy

Fadi Abu Baker Israel

Hala M. Imam Egypt

Sok-Won Han South Korea

David Friedel United States

W Rösch Germany

P. Ch. Schmid Switzerland

Peter H. DeRidder United States

Jack Leya United States

Orly Eshach‐Adiv Israel

Hiroki Okada

131 ×0.7

SURGE

95 ×0.7

GASTR

44 ×0.6

PRM

12 ×0.3

21 ×0.7

PHYSI

Citations per year, relative to Hiroki Okada Hiroki Okada (= 1×) peers Orly Eshach‐Adiv

Countries citing papers authored by Hiroki Okada

Since Specialization

Citations

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

Fields of papers citing papers by Hiroki Okada

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hiroki Okada

This figure shows the co-authorship network connecting the top 25 collaborators of Hiroki Okada. A scholar is included among the top collaborators of Hiroki Okada 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 Hiroki Okada. Hiroki Okada 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:

20 of 20 papers shown

Shimamura, Yuto, Haruhiro Inoue, H. Tanaka, et al.. (2024). Endoscopic pressure study integrated system using an ultrathin gastroscope for the functional assessment of the lower esophageal sphincter. Digestive Endoscopy. 36(11). 1225–1231. 1 indexed citations

Yamamoto, Kazuki, Haruhiro Inoue, Ippei Tanaka, et al.. (2024). Closure in antireflux mucoplasty using anchor prong clips: dead space–eliminating technique. VideoGIE. 9(7). 303–308. 7 indexed citations

Nishikawa, Yohei, Haruhiro Inoue, Yuto Shimamura, et al.. (2023). Endoscopic pressure study integrated system for the diagnosis of achalasia. Digestive Endoscopy. 36(5). 565–572. 2 indexed citations

Inoue, Haruhiro, Yuto Shimamura, Kazuki Yamamoto, et al.. (2023). Hood-attached versus conventional triangular tip-jet knife in peroral endoscopic myotomy: a propensity score matching cohort study. Gastrointestinal Endoscopy. 99(5). 688–693. 1 indexed citations

Tanaka, Ippei, Yuto Shimamura, Haruhiro Inoue, et al.. (2023). Feasibility and safety of per‐oral endoscopic septotomy for Killian‐Jamieson diverticulum: Case series with video. Digestive Endoscopy. 36(8). 895–903. 3 indexed citations

Inoue, Haruhiro, Kazuki Yamamoto, Yuto Shimamura, et al.. (2023). Pilot study on anti‐reflux mucoplasty: Advancing endoscopic anti‐reflux therapy for gastroesophageal reflux disease. Digestive Endoscopy. 36(6). 690–698. 16 indexed citations

Shiwaku, Hironari, Hiroki Okada, Kenji Maki, et al.. (2023). Endoscopic ligation technique for refractory gastrotracheal fistula. SHILAP Revista de lepidopterología. 4(1). e320–e320. 2 indexed citations

Abe, Hirofumi, Shinwa Tanaka, Hiroki Sato, et al.. (2022). Risk scoring system for the preprocedural prediction of the clinical failure of peroral endoscopic myotomy: a multicenter case–control study. Endoscopy. 55(3). 217–224. 8 indexed citations

Fukuda, Hisashi, Hiroki Sato, Yusuke Fujiyoshi, et al.. (2022). Risks of refractory chest pain after peroral endoscopic myotomy in achalasia-related esophageal motility disorders: short-term results from a multicenter study in Japan. Gastrointestinal Endoscopy. 96(4). 620–629.e4. 6 indexed citations

10.

Okada, Hiroki, et al.. (2021). Efficacy and safety of peroral endoscopic myotomy in 100 older patients. Esophagus. 19(2). 324–331. 4 indexed citations

11.

Okada, Hiroki, et al.. (2016). Does catheter shape influence the success of right adrenal venous sampling? The interaction of catheter shape to anatomical factors on CT. Japanese Journal of Radiology. 34(11). 707–717. 5 indexed citations

12.

Yamashita, Kanefumi, Hironari Shiwaku, Hideki Shimaoka, et al.. (2016). Efficacy and safety of endoscopic submucosal dissection under general anesthesia. World Journal of Gastrointestinal Endoscopy. 8(13). 466–466. 25 indexed citations

13.

Okada, Hiroki, et al.. (2014). Factors affecting the use of complementary and alternative medicine among Japanese university students. Journal of Complementary and Integrative Medicine. 12(1). 89–94. 4 indexed citations

14.

Okada, Hiroki, et al.. (2013). Abdominal Pressing Maneuver During Adrenal Venous Sampling for Stabilization of Catheter Position. CardioVascular and Interventional Radiology. 37(2). 498–501. 4 indexed citations

15.

Hori, Masaaki, Katsuhiro Sano, Keiichi Ishigame, et al.. (2010). Can Balloon-occluded Retrograde Transvenous Obliteration Be Performed for Gastric Varices without Gastrorenal Shunts?. Journal of Vascular and Interventional Radiology. 21(5). 663–670. 21 indexed citations

16.

Tsuzuki, Toyonori, Hiroki Okada, Keisuke Hori, et al.. (2008). S1088 Predictors of Success and Quality of Life Assessment in Step-Down OMEPRAZOLE Therapy for Gastro-Esophageal Reflux Disease: A Multi-Center Prospective Clinical Trial in Japan. Gastroenterology. 134(4). A–174. 1 indexed citations

17.

Kawahara, Yoshiro, Masafumi Mizuno, Takashi Yoshino, et al.. (2005). HLA-DQA1*0103-DQB1*0601 Haplotype and Helicobacter pylori–Positive Gastric Mucosa–Associated Lymphoid Tissue Lymphoma. Clinical Gastroenterology and Hepatology. 3(9). 865–868. 14 indexed citations

18.

Fujita, J, K Takahashi, Hiroki Okada, et al.. (1999). Tc-99m Technegas scintigraphy to evaluate the lung ventilation in patients with oral corticosteroid-dependent bronchial asthma. Annals of Nuclear Medicine. 13(4). 247–251. 7 indexed citations

19.

Murao, Koji, Hitomi Imachi, Hiroyuki Nakamura, et al.. (1999). Thiazolidinedione inhibits production of RANTES in a cytokine‐treated human lung epithelial cell line. FEBS Letters. 452(3). 301–304. 15 indexed citations

20.

Okada, Hiroki, et al.. (1986). CLINICAL EVALUATION OF HEAT PROBE METHOD AS ENDOSCOPIC HEMOSTASIS FOR UPPER GI BLEEDING. Acta gastro-enterologica belgica. 28(7). 1537–1545. 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.

Explore authors with similar magnitude of impact