Ryoichi Narita

585 total citations
30 papers, 257 citations indexed

About

Ryoichi Narita is a scholar working on Hepatology, Epidemiology and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Ryoichi Narita has authored 30 papers receiving a total of 257 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Hepatology, 13 papers in Epidemiology and 9 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Ryoichi Narita's work include Liver Disease Diagnosis and Treatment (9 papers), Hepatitis C virus research (8 papers) and Hepatitis B Virus Studies (6 papers). Ryoichi Narita is often cited by papers focused on Liver Disease Diagnosis and Treatment (9 papers), Hepatitis C virus research (8 papers) and Hepatitis B Virus Studies (6 papers). Ryoichi Narita collaborates with scholars based in Japan and United States. Ryoichi Narita's co-authors include Akinari Tabaru, Shintaro Abe, Makoto Otsuki, Yasuyuki Kihara, Toshiharu Akiyama, Ichiro Yoshikawa, Keiichiro Kume, Tsutomu Daa, Kenshi Yao and Shinji Yano and has published in prestigious journals such as Journal of Clinical Oncology, Journal of Hepatology and The American Journal of Gastroenterology.

In The Last Decade

Ryoichi Narita

29 papers receiving 246 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ryoichi Narita Japan 8 104 97 97 44 36 30 257
İnci̇ Süleymanlar Türkiye 10 90 0.9× 124 1.3× 46 0.5× 32 0.7× 27 0.8× 22 286
Edip Torun Türkiye 12 110 1.1× 104 1.1× 70 0.7× 24 0.5× 33 0.9× 19 306
Abed Zaitoun United Kingdom 6 136 1.3× 225 2.3× 118 1.2× 43 1.0× 34 0.9× 8 378
Aaron Walfish United States 9 112 1.1× 72 0.7× 102 1.1× 23 0.5× 17 0.5× 46 249
Haruyo Iwadate Japan 11 92 0.9× 40 0.4× 87 0.9× 25 0.6× 27 0.8× 25 316
Carl May United Kingdom 8 128 1.2× 114 1.2× 148 1.5× 32 0.7× 11 0.3× 16 332
Girish Subbarao United States 10 81 0.8× 148 1.5× 88 0.9× 73 1.7× 40 1.1× 15 370
Şafak Kızıltaş Türkiye 10 195 1.9× 70 0.7× 95 1.0× 34 0.8× 25 0.7× 28 381
Sumio Mukaihara Japan 11 123 1.2× 184 1.9× 114 1.2× 97 2.2× 98 2.7× 35 426
Maciej Adler Belgium 8 197 1.9× 127 1.3× 182 1.9× 26 0.6× 20 0.6× 16 307

Countries citing papers authored by Ryoichi Narita

Since Specialization
Citations

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

Fields of papers citing papers by Ryoichi Narita

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryoichi Narita

This figure shows the co-authorship network connecting the top 25 collaborators of Ryoichi Narita. A scholar is included among the top collaborators of Ryoichi Narita 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 Ryoichi Narita. Ryoichi Narita 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.
Narita, Ryoichi, et al.. (2020). Factors Raising Serum Ammonia Level During Lenvatinib Treatment of Patients With Hepatocellular Carcinoma. Anticancer Research. 40(9). 5271–5276. 2 indexed citations
2.
3.
Kusakabe, Atsunori, Masayuki Kurosaki, Jun Itakura, et al.. (2019). THU-150-Factors associated with treatment failure with SOF+RBV in patients with genotype 2 chronic hepatitis C and consideration of retreatment with GLE+PIB in patients not responding to SOF+RBV. Journal of Hepatology. 70(1). e227–e228. 1 indexed citations
4.
Oe, Shinji, Michihiko Shibata, Hiroshi Mitsuoka, et al.. (2014). Refractory Primary Hepatic Actinomycosis with Direct Infiltration to the Diaphragm and Thorax: The Usefulness of Contrast-enhanced Ultrasonography. Internal Medicine. 53(18). 2073–2078. 3 indexed citations
5.
Ishida, Tetsuya, et al.. (2014). Suspected de novo Hepatitis B in a Patient Receiving Anti-Tumor Necrosis Factor Alpha Therapy for the Treatment of Crohn's Disease. Case Reports in Gastroenterology. 8(1). 44–50. 1 indexed citations
6.
Ueo, Tetsuya, Hirotoshi Yonemasu, Naomi Yada, et al.. (2012). White opaque substance represents an intracytoplasmic accumulation of lipid droplets: Immunohistochemical and immunoelectron microscopic investigation of 26 cases. Digestive Endoscopy. 25(2). 147–155. 44 indexed citations
7.
Narita, Ryoichi, Shintaro Abe, Akinari Tabaru, et al.. (2010). Acute hepatic failure secondary to extensive hepatic replacement by metastatic amelanotic melanoma: an autopsy case report. Clinical Journal of Gastroenterology. 3(6). 327–331. 3 indexed citations
8.
Narita, Ryoichi, et al.. (2010). A case of severe acute hepatitis C and delayed antibody production due to rituximab therapy. Clinical Journal of Gastroenterology. 3(5). 254–258. 1 indexed citations
9.
Kume, Keiichiro, Masahiro Yamasaki, Ryoichi Narita, & Ichiro Yoshikawa. (2009). A case of Brunner's gland hyperplasia with features of duodenal cancer. Gastroenterology Insights. 1(1). 8–8. 3 indexed citations
10.
Abe, Shintaro, et al.. (2008). Increased soluble IL-2 receptor levels during interferon and ribavirin treatment are associated with a good response in genotype 2a/2b patients with chronic hepatitis C. European Journal of Gastroenterology & Hepatology. 20(5). 373–378. 4 indexed citations
11.
Narita, Ryoichi, Shintaro Abe, Akinari Tabaru, & Makoto Otsuki. (2007). Impact of Steatosis on Insulin Secretion in Chronic Hepatitis C Patients. The American Journal of Gastroenterology. 102(10). 2173–2180. 6 indexed citations
12.
Abe, Shintaro, et al.. (2006). Effect of combination therapy with ribavirin and high‐dose interferon‐α2b for 24 weeks in chronic hepatitis C. Journal of Gastroenterology and Hepatology. 21(1). 308–312. 4 indexed citations
13.
Tabaru, Akinari, et al.. (2005). Efficacy of Short-Term Interferon Therapy for Patients Infected with Hepatitis C Virus Genotype 2a. The American Journal of Gastroenterology. 100(4). 862–867. 12 indexed citations
14.
Narita, Ryoichi, Shintaro Abe, Yasuyuki Kihara, et al.. (2004). Insulin resistance and insulin secretion in chronic hepatitis C virus infection. Journal of Hepatology. 41(1). 132–138. 79 indexed citations
15.
Kume, Keiichiro, Mitsuo Tashiro, Yoko Sugihara, et al.. (2003). Early stage esophageal carcinoma in an epiphrenic diverticulum. Gastrointestinal Endoscopy. 57(7). 980–982. 15 indexed citations
16.
Narita, Ryoichi, Shintaro Abe, Akinari Tabaru, et al.. (2002). Biliary obstruction caused by intrabiliary transplantation from hepatocellular carcinoma. Journal of Gastroenterology. 37(1). 55–58. 14 indexed citations
17.
Yamasaki, Takuji, et al.. (2002). Ileocecal ulcer caused by chemotherapy. Gastrointestinal Endoscopy. 55(3). 411–411. 5 indexed citations
18.
Narita, Ryoichi, et al.. (1996). Two cases of pancreatic cancer associated with skin metastases.. PubMed. 91(2). 410–1. 14 indexed citations
19.
Matsumoto, Mika, et al.. (1984). [Guaiazulene mouthwash for diseases of the oral mucosa].. PubMed. 63(4). 843–9. 1 indexed citations
20.
Narita, Ryoichi, et al.. (1969). Behavior of Pigeons Infected with Newcastle Disease Virus. Journal of the Japan Veterinary Medical Association. 22(12). 600–605. 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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