M. Ichiyama

684 total citations
14 papers, 505 citations indexed

About

M. Ichiyama is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Oncology. According to data from OpenAlex, M. Ichiyama has authored 14 papers receiving a total of 505 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Surgery, 10 papers in Pulmonary and Respiratory Medicine and 3 papers in Oncology. Recurrent topics in M. Ichiyama's work include Gallbladder and Bile Duct Disorders (10 papers), Cholangiocarcinoma and Gallbladder Cancer Studies (9 papers) and Pediatric Hepatobiliary Diseases and Treatments (9 papers). M. Ichiyama is often cited by papers focused on Gallbladder and Bile Duct Disorders (10 papers), Cholangiocarcinoma and Gallbladder Cancer Studies (9 papers) and Pediatric Hepatobiliary Diseases and Treatments (9 papers). M. Ichiyama collaborates with scholars based in Japan. M. Ichiyama's co-authors include Kiichi Tamada, Takahiro Tomiyama, K. Ido, Takashi Nishizono, Shinichi Wada, Toshiyuki Aizawa, Ken Kimura, S. Tano, N Ueno and Kazuo Kimura and has published in prestigious journals such as Gastrointestinal Endoscopy, Endoscopy and PubMed.

In The Last Decade

M. Ichiyama

14 papers receiving 490 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
M. Ichiyama Japan	9	495	468	228	12	6	14	505
Glen A. Lehman United States	9	466 0.9×	399 0.9×	268 1.2×	18 1.5×	5 0.8×	12	486
M. Delhaye Belgium	6	396 0.8×	241 0.5×	228 1.0×	17 1.4×	5 0.8×	7	402
Akira Oohashi Japan	7	324 0.7×	303 0.6×	139 0.6×	9 0.8×	4 0.7×	8	329
Laura Lazzell–Pannell United States	10	644 1.3×	596 1.3×	489 2.1×	33 2.8×	2 0.3×	15	704
Lois Bucksot United States	8	464 0.9×	422 0.9×	311 1.4×	9 0.8×		19	486
M. Dohmoto Germany	10	454 0.9×	177 0.4×	403 1.8×	20 1.7×	2 0.3×	19	515
Takao Nishikawa Japan	11	286 0.6×	272 0.6×	168 0.7×	15 1.3×	2 0.3×	23	314
Z Döbrönte Hungary	6	263 0.5×	215 0.5×	184 0.8×	33 2.8×	16 2.7×	26	351
Dharmendra Verma United States	8	382 0.8×	352 0.8×	283 1.2×	44 3.7×	2 0.3×	11	450
R Chiche France	7	211 0.4×	176 0.4×	84 0.4×	12 1.0×	5 0.8×	13	230

Countries citing papers authored by M. Ichiyama

Since Specialization

Citations

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

Fields of papers citing papers by M. Ichiyama

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of M. Ichiyama

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

All Works

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14 of 14 papers shown

Tamada, Kiichi, Takeshi Tomiyama, M. Ichiyama, et al.. (1998). Influence of biliary drainage catheter on bile duct wall thickness as measured by intraductal ultrasonography. Gastrointestinal Endoscopy. 47(1). 28–32. 45 indexed citations

Ueno, N, Takashi Nishizono, Kiichi Tamada, et al.. (1997). Diagnosing Extrahepatic Bile Duct Stones Using Intraductal Ultrasonography: A Case Series. Endoscopy. 29(5). 356–360. 33 indexed citations

Tamada, Kiichi, Nobuyuki Kanai, N Ueno, et al.. (1997). Limitations of Intraductal Ultrasonography in Differentiating between Bile Duct Cancer in Stage T1 and Stage T2: In-vitro and In-vivo Studies. Endoscopy. 29(8). 721–725. 46 indexed citations

Tamada, Kiichi, Kenichi Ido, Norio Ueno, et al.. (1996). Assessment of the course and variations of the hepatic artery in bile duct cancer by intraductal ultrasonography. Gastrointestinal Endoscopy. 44(3). 249–256. 29 indexed citations

Tamada, Kiichi, N Ueno, M. Ichiyama, et al.. (1996). Assessment of Pancreatic Parenchymal Invasion by Bile Duct Cancer Using Intraductal Ultrasonography. Endoscopy. 28(6). 492–496. 43 indexed citations

Tamada, Kiichi, K. Ido, N Ueno, et al.. (1995). Assessment of Portal Vein Invasion by Bile Duct Cancer Using Intraductal Ultrasonography. Endoscopy. 27(8). 573–578. 61 indexed citations

Tamada, Kiichi, K. Ido, N Ueno, et al.. (1995). Assessment of Hepatic Artery Invasion by Bile Duct Cancer Using Intraductal Ultrasonography. Endoscopy. 27(8). 579–583. 56 indexed citations

Tamada, Kiichi, K. Ido, Naoyuki Ueno, et al.. (1995). Preoperative staging of extrahepatic bile duct cancer with intraductal ultrasonography.. PubMed. 90(2). 239–46. 105 indexed citations

Noda, Takahiro, Kiichi Tamada, M. Ichiyama, et al.. (1994). A case of chronic pancreatitis with pseudocysts complicated by infection and obstructive jaundice.. PubMed. 89(11). 2066–9. 6 indexed citations

10.

Tamada, Kiichi, N Ueno, M. Ichiyama, et al.. (1994). [Assessment of tumor extent in extrahepatic bile duct cancers--utility of intraductal ultrasonography].. PubMed. 91(4). 863–74. 4 indexed citations

11.

Ido, Kenichi, N Ueno, Kiichi Tamada, et al.. (1994). A case of anomalous arrangement of the pancreaticobiliary ductal system demonstrated by intraductal ultrasonography.. PubMed. 89(10). 1893–5. 8 indexed citations

12.

Ueno, Norio, Kiichi Tamada, M. Ichiyama, et al.. (1994). A Case of Anomalous Arrangement of the Pancreatico-biliary Ductal System Demonstrated by Intraductal Ultrasonography. 44(0). 143–146. 8 indexed citations

13.

Ohashi, Akiyoshi, Hiroaki Seki, Kiichi Tamada, et al.. (1991). Diagnosis of Biliary Diseases via a Naso-biliary Catheter. Endoscopy. 23(2). 79–82. 5 indexed citations

14.

Tamada, Kiichi, Hiroaki Seki, Kouichi Sato, et al.. (1991). Efficacy of Endoscopic Retrograde Cholecystoendoprosthesis (ERCCE) for Cholecystitis. Endoscopy. 23(1). 2–3. 56 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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