Nana Hayashi

2.5k total citations
34 papers, 1.3k citations indexed

About

Nana Hayashi is a scholar working on Pulmonary and Respiratory Medicine, Oncology and Surgery. According to data from OpenAlex, Nana Hayashi has authored 34 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 32 papers in Pulmonary and Respiratory Medicine, 17 papers in Oncology and 13 papers in Surgery. Recurrent topics in Nana Hayashi's work include Gastric Cancer Management and Outcomes (32 papers), Metastasis and carcinoma case studies (13 papers) and Colorectal Cancer Screening and Detection (12 papers). Nana Hayashi is often cited by papers focused on Gastric Cancer Management and Outcomes (32 papers), Metastasis and carcinoma case studies (13 papers) and Colorectal Cancer Screening and Detection (12 papers). Nana Hayashi collaborates with scholars based in Japan, United States and Australia. Nana Hayashi's co-authors include Shinji Tanaka, Kazuaki Chayama, Shiro Oka, Motomi Terasaki, Kenjiro Shigita, Naoki Asayama, S Nishiyama, Koji Arihiro, Yuki Ninomiya and Yuzuru Tamaru and has published in prestigious journals such as SHILAP Revista de lepidopterología, Gastrointestinal Endoscopy and Digestive Diseases and Sciences.

In The Last Decade

Nana Hayashi

34 papers receiving 1.2k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Nana Hayashi Japan 20 1.1k 702 538 363 89 34 1.3k
Sayo Ito Japan 18 890 0.8× 459 0.7× 614 1.1× 410 1.1× 56 0.6× 123 1.2k
Koichi Nakadoi Japan 15 800 0.7× 522 0.7× 380 0.7× 288 0.8× 98 1.1× 23 958
Teppei Akimoto Japan 22 863 0.8× 226 0.3× 714 1.3× 618 1.7× 35 0.4× 71 1.1k
Norimasa Fukushima Japan 17 1.3k 1.2× 284 0.4× 597 1.1× 807 2.2× 40 0.4× 46 1.5k
Yuzuru Tamaru Japan 13 485 0.4× 304 0.4× 297 0.6× 160 0.4× 41 0.5× 44 571
Osamu Hosokawa Japan 13 618 0.6× 394 0.6× 571 1.1× 164 0.5× 57 0.6× 26 819
Yoichi Akazawa Japan 13 280 0.3× 161 0.2× 328 0.6× 183 0.5× 76 0.9× 53 558
Katsuro Ichimasa Japan 16 436 0.4× 561 0.8× 283 0.5× 63 0.2× 57 0.6× 63 719
Naoto Tamai Japan 17 516 0.5× 474 0.7× 282 0.5× 136 0.4× 36 0.4× 60 721
I. J. Adam United Kingdom 8 304 0.3× 923 1.3× 733 1.4× 55 0.2× 82 0.9× 8 1.1k

Countries citing papers authored by Nana Hayashi

Since Specialization
Citations

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

Fields of papers citing papers by Nana Hayashi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Nana Hayashi

This figure shows the co-authorship network connecting the top 25 collaborators of Nana Hayashi. A scholar is included among the top collaborators of Nana Hayashi 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 Nana Hayashi. Nana Hayashi 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.
Okamoto, Yuki, Shiro Oka, Shinji Tanaka, et al.. (2021). Effect of educational lecture on the diagnostic accuracy of Japan NBI Expert Team classification for colorectal lesions. BMC Gastroenterology. 21(1). 110–110. 3 indexed citations
2.
Hirano, Daiki, Shiro Oka, Shinji Tanaka, et al.. (2017). Clinicopathologic and endoscopic features of early-stage colorectal serrated adenocarcinoma. BMC Gastroenterology. 17(1). 158–158. 5 indexed citations
3.
Ninomiya, Yuki, Shinji Tanaka, Ken Yamashita, et al.. (2017). Clinical impact of surveillance colonoscopy using magnification without diminutive polyp removal. Digestive Endoscopy. 29(7). 773–781. 12 indexed citations
4.
Sumimoto, Kyoku, Shinji Tanaka, Kenjiro Shigita, et al.. (2017). Diagnostic performance of Japan NBI Expert Team classification for differentiation among noninvasive, superficially invasive, and deeply invasive colorectal neoplasia. Gastrointestinal Endoscopy. 86(4). 700–709. 55 indexed citations
5.
Sumimoto, Kyoku, Shinji Tanaka, Kenjiro Shigita, et al.. (2016). Clinical impact and characteristics of the narrow-band imaging magnifying endoscopic classification of colorectal tumors proposed by the Japan NBI Expert Team. Gastrointestinal Endoscopy. 85(4). 816–821. 98 indexed citations
6.
Asayama, Naoki, Shiro Oka, Shinji Tanaka, et al.. (2016). Clinical usefulness of a single-use splinting tube for poor endoscope operability in deep colonic endoscopic submucosal dissection. SHILAP Revista de lepidopterología. 4(6). E614–E617. 16 indexed citations
7.
Tamaru, Yuzuru, Shiro Oka, Shinji Tanaka, et al.. (2016). Endoscopic submucosal dissection for anorectal tumor with hemorrhoids close to the dentate line: a multicenter study of Hiroshima GI Endoscopy Study Group. Surgical Endoscopy. 30(10). 4425–4431. 30 indexed citations
8.
Shigita, Kenjiro, Shiro Oka, Shinji Tanaka, et al.. (2016). Long-term outcomes after endoscopic submucosal dissection for superficial colorectal tumors. Gastrointestinal Endoscopy. 85(3). 546–553. 64 indexed citations
9.
Ninomiya, Yuki, Shiro Oka, Shinji Tanaka, et al.. (2016). Clinical impact of dual red imaging in colorectal endoscopic submucosal dissection: a pilot study. Therapeutic Advances in Gastroenterology. 9(5). 679–683. 24 indexed citations
10.
Asayama, Naoki, Shiro Oka, Shinji Tanaka, et al.. (2015). Long-term outcomes after treatment for T1 colorectal carcinoma. International Journal of Colorectal Disease. 31(3). 571–578. 35 indexed citations
11.
Ninomiya, Yuki, Shinji Tanaka, S Nishiyama, et al.. (2015). Risk of bleeding after endoscopic submucosal dissection for colorectal tumors in patients with continued use of low-dose aspirin. Journal of Gastroenterology. 50(10). 1041–1046. 27 indexed citations
12.
Tamaru, Yuzuru, Shiro Oka, Shinji Tanaka, et al.. (2015). Early Squamous Cell Carcinoma of the Anal Canal Resected by Endoscopic Submucosal Dissection. Case Reports in Gastroenterology. 9(1). 120–125. 11 indexed citations
13.
Asayama, Naoki, Shiro Oka, Shinji Tanaka, et al.. (2015). Endoscopic Submucosal Dissection as Total Excisional Biopsy for Clinical T1 Colorectal Carcinoma. Digestion. 91(1). 64–69. 38 indexed citations
14.
Nishiyama, S, Shiro Oka, Shinji Tanaka, et al.. (2014). Is It Possible to Discriminate Between Neoplastic and Nonneoplastic Lesions in Ulcerative Colitis by Magnifying Colonoscopy?. Inflammatory Bowel Diseases. 20(3). 508–513. 21 indexed citations
15.
Nakadoi, Koichi, Shiro Oka, Shinji Tanaka, et al.. (2013). Condition of muscularis mucosae is a risk factor for lymph node metastasis in T1 colorectal carcinoma. Surgical Endoscopy. 28(4). 1269–1276. 42 indexed citations
16.
Hayashi, Nana, Shinji Tanaka, David G. Hewett, et al.. (2013). Endoscopic prediction of deep submucosal invasive carcinoma: validation of the Narrow-Band Imaging International Colorectal Endoscopic (NICE) classification. Gastrointestinal Endoscopy. 78(4). 625–632. 318 indexed citations
17.
Tanaka, Shinji, Nana Hayashi, S Nishiyama, et al.. (2013). Risk factors for vertical incomplete resection in endoscopic submucosal dissection as total excisional biopsy for submucosal invasive colorectal carcinoma. International Journal of Colorectal Disease. 28(9). 1247–1256. 20 indexed citations
18.
Hayashi, Nana, Shinji Tanaka, S Nishiyama, et al.. (2013). Predictors of incomplete resection and perforation associated with endoscopic submucosal dissection for colorectal tumors. Gastrointestinal Endoscopy. 79(3). 427–435. 134 indexed citations
19.
Tanaka, Shinji, Motomi Terasaki, Nana Hayashi, Shiro Oka, & Kazuaki Chayama. (2012). Warning for unprincipled colorectal endoscopic submucosal dissection: Accurate diagnosis and reasonable treatment strategy. Digestive Endoscopy. 25(2). 107–116. 66 indexed citations
20.
Nakadoi, Koichi, Shinji Tanaka, Nana Hayashi, et al.. (2012). Clinical outcomes of endoscopic submucosal dissection for rectal tumor close to the dentate line. Gastrointestinal Endoscopy. 76(2). 444–450. 22 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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