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Researcher · Jichi Medical University · Japan

Masahiko Ichiyama

Masahiko Ichiyama publishes mostly in Surgery, Pulmonary and Respiratory Medicine and Oncology, on topics such as Gallbladder and Bile Duct Disorders, Cholangiocarcinoma and Gallbladder Cancer Studies and Pediatric Hepatobiliary Diseases and Treatments.

OpenAlex
World rank
#2,106,524
of 7,710,434 ranked researchers
Rank in Japan
#39,208
of 383,136
Works
19
Citations
685
Citations per work
36.1
h-index
10
i10-index 11Top 49% in Surgery
Masahiko Ichiyama

What does Masahiko Ichiyama research?

Masahiko Ichiyama's work is mostly in Medicine (98%), Dentistry (2%).

Health Sciences: 19 works · 100.0% of their workMedicine: 19 works · 98.0% of their workSurgery: 10 works · 52.9% of their workPulmonary and Respiratory Medicine: 6 works · 29.4% of their workOncology: 1 works · 7.8% of their workHepatology: 1 works · 5.9% of their workOrthopedics and Sports Medicine: 0 works · 2.0% of their workDentistry: 0 works · 2.0% of their workOral Surgery: 0 works · 2.0% of their workTHEIR WORKMasahiko Ichiyama19works
Health Sciences100%

Their six largest subfields, inside their fields and domains; the grey slice is everything else they publish. The interactive view splits every one of their works down to single topics.

The fields and subfields, with their numbers
    1. Medicine1998.0%
    2. Dentistry02.0%
  1. 1Surgery53% of their works
  2. 2Pulmonary and Respiratory Medicine29% of their works
  3. 3Oncology8% of their works
  4. 4Hepatology6% of their works
  5. 5Oral Surgery2% of their works
  6. 6Orthopedics and Sports Medicine2% of their works

Research topics

Which keywords describe Masahiko Ichiyama's research?

The keywords of their largest research topics: Cholangiocarcinoma, Epidemiology, Surgical Management, Cholecystitis, ERCP, Biliary Tract Cancer, Intrahepatic Cholangiocarcinoma and Alagille Syndrome.

Size is their works in the topics tagged with each word, from their 8 largest topics. Each links to the topic it comes from most.

All 21 words, with their numbers
  1. Cholangiocarcinoma212 topics
  2. Epidemiology163 topics
  3. Surgical Management122 topics
  4. Cholecystitis111 topic
  5. ERCP111 topic
  6. Biliary Tract Cancer101 topic
  7. Intrahepatic Cholangiocarcinoma101 topic
  8. Alagille Syndrome61 topic
  9. Biliary Atresia61 topic
  10. Diagnosis62 topics
  11. Treatment62 topics
  12. Intussusception41 topic
  13. Meckel's Diverticulum41 topic
  14. Pancreatic Cancer41 topic
  15. Surgical Complications41 topic
  16. Acute Pancreatitis21 topic
  17. Bouveret's Syndrome21 topic
  18. Chronic Pancreatitis21 topic
  19. Gallstone Ileus21 topic
  20. Hepatocellular Carcinoma21 topic
  21. Liver Cancer21 topic

Where does Masahiko Ichiyama work?

Masahiko Ichiyama's main affiliation in the publication record is Jichi Medical University, Japan.

How many publications and citations does Masahiko Ichiyama have?

OpenAlex counts 19 works and 685 citations for Masahiko Ichiyama, an h-index of 10, ranking #2,106,524 of 7,710,434 researchers worldwide on the quality score.

Ranked on field-normalised excellence (50%), output (30%) and citations (20%). Counts come from OpenAlex author records, which occasionally merge different people who share a name or split one person into several.

Papers, co-authors, who cited this work and researchers on the nearest topics have tabs of their own, above. Is this your page? Claim it with your ORCID iD, or request a correction or removal.

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