Masafumi Chiba

Profile Information

Affiliation: (MD., PhD), Department of Endoscopy, Jikei University School of Medicine, Tokyo, Japan

Degree: PhD(May, 2017, Jikei University)

Researcher number: 50814646
ORCID ID: https://orcid.org/0000-0002-2947-0298
J-GLOBAL ID: 202001019825373526
researchmap Member ID: R000000373

Research Interests

Research Areas

Life sciences / Gastroenterology /

Research History

Apr, 2017 - Present

assistant teacher (MD., PhD), Department of Endoscopy, The Jikei University School of Medicine
Apr, 2016 - Mar, 2017

assistant teacher (MD), division of gastroenterology and hepatology, The Jikei University School of Medicine Hospital
Apr, 2012 - Mar, 2016

Digestive Internal Medicine Graduate School, Digestive Internal Medicine Graduate School, The Jikei University School of Medicine
Apr, 2010 - Mar, 2012

assistant teacher, division of gastroenterology and hepatology, The Jikei University School of Medicine Third Hospital
Apr, 2008 - Mar, 2010

assistant teacher, division of gastroenterology and hepatology, The Jikei University School of Medicine Hospital
Apr, 2006 - Mar, 2009

residency in internal medicine (MD), The JIkei University School of Medicine Hospital
Apr, 2007 - Mar, 2008

Dr (MD), gastroenterology, Atsugi city Hospital, Kanagawa, Japan
Apr, 2004 - Mar, 2006

initial resident, The JIkei University School of Medicine Third Hospital

Education

Apr, 2012 - Mar, 2016

Gastroenterology, Graduate School of Medicine, The Jikei University of Medicine
Apr, 1998 - Mar, 2004

The Jikei University School of Medicine

Committee Memberships

Apr, 2021 - Present

Councilor, Kanto Branch, Japan Society for Digestive Endoscopy

Major Awards

Oct, 2018

慈恵医師会研究奨励賞受賞, 超音波内視鏡ガイド下穿刺吸引細胞診を組み合わせた膵癌診断におけるS100Pタンパクの新しい定量解析法, 慈恵医師会

千葉允文

Major Papers

Analysis of variation in learning curves for achieving competency in convex endoscopic ultrasound training: A prospective cohort study using a standardized assessment tool

Masafumi Chiba, Masayuki Kato, Yuji Kinoshita, Takafumi Akasu, Hiroaki Matsui, Nana Shimamoto, Youichi Tomita, Takahiro Abe, Keisuke Kanazawa, Shintaro Tsukinaga …

Gastrointestinal Endoscopy, Nov 4, 2022 Peer-reviewedLead authorCorresponding author
Diagnostic Dilemma of Biliopancreatic Contrast-Enhanced Harmonic Endoscopic Ultrasonography

Keisuke Kanazawa†, Masafumi Chiba†, Masayuki Kato, Yuji Kinoshita, Takafumi Akasu, Hiroaki Matsui, Nana Shimamoto, Youichi Tomita, Takahiro Abe, Shintaro Tsukinaga …

Diagnostics, Aug 16, 2022 Peer-reviewedLead authorCorresponding author
Potential Significance of Uncovered Self-Expandable Metal Stents for Distal Malignant Biliary Obstruction: A Propensity Score-Adjusted Competing Risk Regression Analysis

Yuichi Torisu#, Masafumi Chiba#, Masayuki Kato, Yuji Kinoshita, Takafumi Akasu, Tomoya Kanai, Yoichi Tomita, Nana Shimamoto, Takahiro Abe, Keisuke Kanazawa, Shintaro Tsukinaga, Masanori Nakano, Chisato Saeki, Kazuki Sumiyama, Masayuki Saruta. #These authors contributed equally to this work.

DEN Open, Aug, 2022 Peer-reviewedLead author
Best period to replace or change plastic stents with self-expandable metallic stents using multivariate competing risk regression analysis

Masafumi Chiba, Masayuki Kato, Yuji Kinoshita, Nana Shimamoto, Youichi Tomita, Takahiro Abe, Yosuke Kawahara, Seita Koyama, Keisuke Kanazawa, Kazuki Takakura …

Scientific Reports, 10(1) 13080-13080, Dec, 2020 Peer-reviewedLead authorCorresponding author
The milestone for preventing post-ERCP pancreatitis using novel simplified predictive scoring system: a propensity score analysis

Masafumi Chiba, Masayuki Kato, Yuji Kinoshita, Nana Shimamoto, Youichi Tomita, Takahiro Abe, Keisuke Kanazawa, Shintaro Tsukinaga, Masanori Nakano, Yuichi Torisu …

Surgical Endoscopy, 35(12) 6696-6707, Nov 30, 2020 Peer-reviewedLead authorCorresponding author
Novel quantitative analysis of the S100P protein combined with endoscopic ultrasound-guided fine needle aspiration cytology in the diagnosis of pancreatic adenocarcinoma

Masafumi Chiba, Hiroo Imazu, Masayuki Kato, Keiichi Ikeda, Hiroshi Arakawa, Tomohiro Kato, Kazuki Sumiyama, Sadamu Homma

Oncology Reports, 37(4) 1943-1952, Apr 1, 2017 Peer-reviewedLead authorCorresponding author

Major Misc.

【処置具を使いこなす】胆・膵内視鏡胆道ドレナージ経乳頭胆管ドレナージに用いる処置具(Metallic Stent)を使いこなすコツ．

今津博雄, 千葉允文

消化器内視鏡, 27(8) 1437-1440, 2015 Last author

Books and Other Publications

膵臓症候群（第2版）－その他の膵臓疾患を含めて－

千葉允文 (Role: Contributor, 高アミラーゼ血症/マクロアミラーゼ血症)

日本臨牀社, Jul, 2011

Major Presentations

胆管Plastic stentの限界留置期間とSelf-expandable metallic stentへの切り替え最適期間の検証:多変量競合リスク回帰分析

千葉允文, 加藤正之, 月永真太郎, 鳥巣勇一, 炭山和毅

第113回日本消化器内視鏡学会関東支部例会, Dec 4, 2021
胆膵超音波内視鏡描出習得のためのアセスメントツールの開発とその検証: 単施設前向きコホート研究

千葉允文, 加藤正之, 月永真太郎, 鳥巣勇一, 炭山和毅

第 112 回日本消化器内視鏡学会関東支部例会, Jun 12, 2021
The milestone for preventing post-ERCP pancreatitis using novel simplified predictive scoring system

Masafumi Chiba, Masayuki Kato, Kazuki Sumiyama

The 101st Congress of the Japan Gastroenterological Endoscopy Society, May 16, 2021
内視鏡的逆行性胆管造影(ERC)下胆管ブラシ細胞診における液状化細胞診の有用性

千葉允文, 今津博雄, 梅澤敬

第89回日本消化器内視鏡学会総会, May 29, 2015
Impact of preoperative endoscopic biliary drainage on postoperative complications after pancreaticoduodenectomy for periampullary cancer. United European Gastroenterology

Chiba M, Imazu H, Shimamoto N, Kanazawa K, Mori N, Toyoizumi H, Tajiri H

United European Gastroenterology (UEGW2014), Oct 21, 2014
The utility of the second-generation multibending backward-oblique viewing duodenoscope in endoscopic retrograde cholangiopancreatography

Chiba M, Imazu H, Kanazawa K, Mori N, Toyoizumi1 H, Tajiri H

United European Gastroenterology (UEGW2013), Oct 21, 2013
ERCP関連手技における第2世代マルチベンディング後方斜視十二指腸スコープ（M-Dスコープ）の有用性に関する検討

千葉允文, 今津博雄, 金澤慶典, 森直樹, 池田圭一, 田尻久雄

第85回日本消化器内視鏡学会総会, May 10, 2013
自己免疫性膵炎の治療効果判定に拡散強調画像の拡散係数値は有効か？検討と新たな工夫．

千葉允文, 西野博一, 鳥巣勇一, 田尻久雄

第42回日本膵臓学会大会, Jul 29, 2011
Comparative Discussion of Country-specific Diagnostic Criteria of Autoimmune Pancreatitis on Our Hospital’s 14 patients

Chiba M, Torisu Y, Seearashi Y, Nishino H, Tajiri H

Joint Meeting of the 14th Meeting of the International Association of Pancreatology (IAP), Jul 12, 2010

Professional Memberships

May, 2010 - Present

Japan Pancreas Society
Oct, 2009 - Present

The Japanese Society of Gastroenterology
Aug, 2009 - Present

Japan Gastroenterological Endoscopy Society
Sep, 2004 - Present

The Japanese Society of Internal Medicine

Research Projects

Clinical Trial of Rapid Diagnostic System for Protein Expression in Pancreatic Cancer Using Ultrasonic Endoscopic Fine Needle Aspiration Samples

Japan Agency for Medical Research and Development, Apr, 2022 - Mar, 2023

Masafumi Chiba, Masayuki Kato, Kazuki Sumiyma

Profile Information

Research Interests

Research Areas

Research History

Education

Committee Memberships

Major Awards

Major Papers

Major Misc.

Books and Other Publications

Major Presentations

Professional Memberships

Research Projects

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Coauthors