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KOIWAI Keiichiro

Academic OrganizationAcademic Assembly School of Medicine and Health Sciences Institute of MedicineTEL
Education and Research OrganizationUniversity Hospital RadiologyFAX
PositionAssociate ProfessorMail Address
Address3-1-1, Asahi, Matsumoto City 390-8621Web site

Profile

Research Field
Radiation Oncology
Academic Background
Graduate School
2011
Research Career
Research Career
2017-2021 , Senior Assistant Professor
2011-2017 , Assistant Professor

Research

Books, Articles, etc.
Articles
Impact of low-dose tadalafil on adverse events after low-dose-rate brachytherapy for prostate cancer: A bi-center randomized open-label trial
INTERNATIONAL JOURNAL OF UROLOGY,28(4):432-438 2021(Apr.)
Author:Minagawa, Tomonori; Oguchi, Tomohiko; Saitou, Tetsuichi; Fukazawa, Ayumu; Hashida, Iwao; Koiwai, Keiichiro; Iijima, Kazuyoshi; Kato, Haruaki; Ogawa, Teruyuki; Ishizuka, Osamu;
Keywords:adverse events; low‐ dose‐ rate brachytherapy; prostate cancer; tadalafil; tamsulosin;


Nursing of patients with prostate cancer treated by brachytherapy : Needs of patients requiring from the nursing
,48(1):14-17 2021(Mar.)
Keywords:前立腺癌;密封小線源永久挿入療法;患者のニーズ


Ten-Year Experience of Stereotactic Body Radiotherapy at a Single Institution: Impact of Technological Development on the Outcome of Patients With Early Lung Cancer
TECHNOLOGY IN CANCER RESEARCH & TREATMENT,19 2020
Author:Koiwai, Keiichiro; Endo, Yuuki; Mizuhata, Kai; Ina, Hironobu; Fukazawa, Ayumu; Ozawa, Takesumi; Fujinaga, Yasunari;


Proton Beam Therapy for Adolescent Primary Central Nervous System Lymphoma With Residual Tumor After Intensive Chemotherapy: A Case Report
PRACTICAL RADIATION ONCOLOGY,9(5):333-337 2019
Author:Komori, Kazutoshi; Saito, Shoji; Araya, Masayuki; Morita, Daisuke; Kurata, Takashi; Hirabayashi, Koichi; Tanaka, Miyuki; Koiwai, Keiichiro; Tauchi, Katsunori; Masaki, Hidekazu; Nakazawa, Yozo;


Texture irregularity of pretreatment contrast-enhanced computed tomography as a predictive factor for developing esophageal stricture after chemoradiation therapy for esophageal squamous cell carcinoma
Medical Imaging and Radiology,6(1):1-5 2018(Jun. 21)
Author:Keiichiro Koiwai, Hironobu Ina, Ayumu Fukazawa, Takesumi Ozawa and Masumi Kadoya


Predictive Factors for Deterioration of Lower Urinary Tract Symptoms After Iodine-125 Brachytherapy in Prostate Cancer Patients
信州医学雑誌,66(2):131-137 2018(Apr. 10)
Author:Fukazawa, Ayumu; Koiwai, Keiichiro; Ozawa, Takesumi; Matsushita, Hirohide; Kadoya, Masumi


Bronchial Mucoepidermoid Carcinoma Successfully Treated with Radiation Therapy: A Case Report
Oncology and Cancer Case Reports,3(2):1-4 2017(Jul. 03)
Author:Kenichi Nishie, Masanori Yasuo, Hidekazu Takahashi, Yoko Ozawa, Kazunari Tateishi, Hiroshi Yamamoto, Keiichiro Koiwai, Takeshi Uehara, Gen Ideura and Masayuki Hanaoka


Dosimetric Comparisons of Volumetric Modulated Arc Therapy with Three-Dimensional Conformal Radiation Therapy for Locally Advanced Non-Small Cell Lung Cancer
信州医学雑誌,65(2):93-98 2017(Apr. 10)
Author:Ozawa, Takesumi; Koiwai, Keiichiro; Matsushita, Hirohide; Kadoya, Masumi


Outcomes of uterine cervical cancer patients with pelvic lymph node metastases after radiotherapy without boost irradiation of metastases
JOURNAL OF OBSTETRICS AND GYNAECOLOGY RESEARCH,43(4):718-722 2017(Apr.)
Author:Yoshizawa, Eriko; Koiwai, Keiichiro; Ina, Hironobu; Fukazawa, Ayumu; Sakai, Katsuya; Ozawa, Takesumi; Matsushita, Hirohide; Kadoya, Masumi;


子宮癌における放射線治療の現状(技術報告)
INNERVISION,32(12):84-85 2017
Author:小岩井慶一郎


子宮癌における放射線治療の現状(臨床報告)
INNERVISION,32(11):74-75 2017
Author:小岩井慶一郎


ABO血液型不一致腎移植における移植腎放射線照射
信州医学雑誌,64(3):147-151 2016(Jun.)
Author:松下 大秀, 小岩井 慶一郎, 角谷 眞澄


Palliative radiotherapy for Japanese patients with malignant melanoma: a single-institution experience
JAPANESE JOURNAL OF RADIOLOGY,34(2):125-129 2016(Feb.)
Author:Koiwai, Keiichiro; Sasaki, Shigeru; Yoshizawa, Eriko; Ina, Hironobu; Fukazawa, Ayumu; Sakai, Katsuya; Ozawa, Takesumi; Matsushita, Hirohide; Kadoya, Masumi;


ABO血液型不一致腎移植における移植腎放射線照射
信州医学雑誌,64(3):147-151 2016
Author:松下 大秀; 小岩井 慶一郎; 角谷 眞澄;
Keywords:ABO血液型不一致腎移植; 移植腎放射線照射; 溶血性貧血;


Successful Concurrent Chemoradiotherapy with Cisplatin plus Vinorelbine for Locally Advanced Thymic Carcinoma
Case Reports in Oncology,7:65–69 2014(Jan. 24)
Author:Toshirou Fukushimaa, Kazunari Tateishia, Masayuki Hanaokaa, Keiichirou Koiwai, Shigeru Sasakic, and Tomonobu Koizumi


Validity of reduced radiation dose for localized diffuse large B-cell lymphoma showing a good response to chemotherapy
JOURNAL OF RADIATION RESEARCH,55(2):359-363 2014
Author:Koiwai, K; Sasaki, S; Yoshizawa, E; Ina, H; Fukazawa, A; Sakai, K; Ozawa, T; Matsushita, H; Kadoya, M


子宮癌腔内照射を受ける患者の看護~患者の苦痛に焦点をあてて~
信州大学医学部附属病院看護研究集録,41(1):1-4 2013(Mar. 01)
Author:柳揮裕子、窪田里絵、遠山理江、細田かず子、小岩井慶一郎


子宮癌腔内照射を受ける患者の看護 : 患者の苦痛に焦点をあてて
信州大学医学部附属病院看護研究集録,41(1):1-4 2013(Mar.)
Author:柳澤 裕子; 窪田 里絵; 遠山 理江; 細田 かず子; 小岩井 慶一郎;
Keywords:子宮頸癌; 腔内照射; 苦痛;


Treatment outcome of elderly patients with glioblastoma who received combination therapy
Am J Clin Oncol,35:486-489 2012
Author:Shikama N, Sasaki S, Shinoda A, Koiwai K


Validation of the total dysphagia risk score (TDRS) as a predictive measure for acute swallowing dysfunction induced by chemoradiotherapy for head and neck cancers
Radiother Oncol,97:132-135 2010
Author:Koiwai, Keiichiro; Shikama, Naoto; Sasaki, Shigeru; Shinoda, Atsunori; Kadoya, Masumi


P-2-34 放射線化学療法に抵抗性で外科的切除により根治が得られた食道癌リンパ節再発の1例(食道 術後合併症および再発,一般演題(ポスター),第64回日本消化器外科学会総会)
日本消化器外科学会雑誌,42(7) 2009(Jul. 01)
Author:中山 中; 久保 直樹; 竹内 信道; 辻本 和雄; 伊藤 憲雄; 小岩井 慶一郎;


Risk Factors for Severe Dysphagia after Concurrent Chemoradiotherapy for Head and Neck Cancers
JAPANESE JOURNAL OF CLINICAL ONCOLOGY,39(7):413-417 2009(Jul.)
Author:Koiwai, Keiichiro; Shikama, Naoto; Sasaki, Shigeru; Shinoda, Atsunori; Kadoya, Masumi


Relationship between the response to treatment and the prognosis of patients with aggressive lymphomas treated with chemotherapy followed by involved-field radiotherapy: Radiographic assessment
JAPANESE JOURNAL OF CLINICAL ONCOLOGY,38(1):43-48 2008(Jan.)
Author:Sasaki, Shigeru; Shikama, Naoto; Koiwai, Keiichiro; Kadoya, Masumi;


Successful treatment of primary cardiac angiosarcoma with docetaxel and radiotherapy
ANGIOLOGY,59(3):368-371 2008
Author:Nakamura-Horigome, Miki; Koyama, Jun; Eizawa, Takayuki; Kasai, Hiroki; Kumazaki, Setsuo; Tsutsui, Hiroshi; Koiwai, Keiichiro; Oguchi, Kazuhiro; Kinoshita, Osamu; Ikeda, Uichi;


Clinicopathologic features and histochemical analyses of proliferative activity and angiogenesis in small cell carcinoma of the esophagus
JOURNAL OF GASTROENTEROLOGY,42(12):932-938 2007(Dec.)
Author:Koide, Naohiko; Saito, Hiroyasu; Suzuki, Akira; Sato, Toshiyuki; Koiwai, Keiichiro; Nakamura, Naoshi; Miyagawa, Shinichi;


Dummy run for a phase II multi-institute trial of chemoradiotherapy for unresectable pancreatic cancer: Inter-observer variance in contour delineation
ANTICANCER RESEARCH,27(4C):2965-2971 2007
Author:Yamazaki, Hideya; Nishiyama, Kinji; Tanaka, Eiichi; Koiwai, Keiichiro; Shikama, Nacto; Ito, Yoshinori; Arahira, Satoko; Tamamoto, Tetsuro; Shibata, Toru; Tamaki, Yoshio; Kodaira, Takeshi; Oguchi, Masahiko;


胃悪性リンパ腫における照射方法の検討
日本放射線腫瘍学会誌,18(3):135-139 2006(Jul. 25)
Author:小岩井慶一郎、佐々木茂、鹿間直人


What's going on 放射線 Locoregional radiation therapy in patients with high-risk breast cancer receiving adjuvant chemotherapy: 20-year results of the British Columbia randomized trial. Ragaz J, Olivotto IA, Spinelli JJ, Phillips N, Jackson SM, Wilson KS, Knowling MA, Coppin CM, Weir L, Gelmon K, Le N, Durand R, Coldman AJ, Manji M. J Natl Cancer Inst. 2005; 97: 116-26. PMID: 15657341.--閉経前でリンパ節転移を有する高リスク乳癌症例において、術後化学療法に加え術後照射を行うことで生存率が改善することを無作為化比較試験で示した論文
Mebio oncology,2(4):96-98 2005
Author:小岩井 慶一郎; 鹿間 直人;


頭蓋内胚細胞腫に対する放射線治療
The Journal of JASTRO = 日本放射線腫瘍学会誌,15(3):165-170 2003(Sep. 25)
Author:鹿間 直人; 佐々木 茂; 西川 敦; 小岩井 慶一郎; 小口 正彦;
Keywords:Germinoma; Brain tumor; Radiotherapy;


消化管間葉系腫瘍(GIST)の画像診断 : CTによる悪性度の評価
日本醫學放射線學會雜誌,63(5):210-213 2003(May 25)
Author:望月 健太郎; 植田 瑞穂; 塩沢 哲; 石亀 廣樹; 長谷川 実; 小岩井 慶一郎; 渡辺 俊一; 角谷 眞澄;
Keywords:GIST; gastrointestinal stromal tumor; CT finding;


消化管間葉系腫瘍(GIST)の画像診断:CTによる悪性度の評価
日本医学放射線学会雑誌,63(5):210-213 2003(May 25)
Author:望月 健太郎; 植田 瑞穂; 塩沢 哲; 石亀 廣樹; 長谷川 実; 小岩井 慶一郎; 渡辺 俊一; 角谷 眞澄; モチズキ ケンタロウ; ウエダ ミズホ; シオザワ サトシ; イシガメ ヒロキ; ハセガワ ミノル; コイワイ ケイイチロウ; ワタナベ トシカズ; カドヤ マスミ; Mochizuki Kentaro; Ueda Mizuho; Shiozawa Satoshi; Ishigame Hiroki; Hasegawa Minoru; Koiwai Keiichiro; Watanabe Toshikazu; Kadoya Masumi;


上咽頭癌における60Gyまでの照射期間が放射線治療成績に与える影響
日本医学放射線学会雑誌,63(1):41-46 2003(Jan. 25)
Author:荒川 和清; 鹿間 直人; 佐々木 茂; 篠田 充功; 西川 敦; 小岩井 慶一郎; 平瀬 雄一; 岡嵜 洋一; 小口 正彦; 角谷 眞澄; アラカワ カズキヨ; シカマ ナオト; ササキ シゲル; シノダ アツノリ; ニシカワ アツシ; コイワイ ケイイチロウ; ヒラセ ユウイチ; オカザキ ヨウイチ; オグチ マサヒコ; カドヤ マスミ; Arakawa Kazukiyo; Shikama Naoto; Sasaki Shigeru; Shinoda Atusunori; Nishikawa Ausushi; Koiwai Keiichirou; Hirase Yuichi; Okazaki Youichi; Oguchi Masahiko; Kadoya Masumi;


Risk Factors for Local-Regional Recurrence Following Preoperative Radiation Therapy and Surgery for Head and Neck Cancer (Stage II–IVB)
Radiology,228(3):789-94 2003(Jan. 14)
Author:Naoto Shikama, Shigeru Sasaki, Atsushi Nishikawa, Keiichirou Koiwai, Fuyumi Yoshino, Yuichi Hirase, Rei Kawakami, Masumi Kadoya, and Masahiko Oguchi


鼻腔原発非ホジキンリンパ腫における中枢神経浸潤の評価
日本医学放射線学会雑誌,61(7):342-346 2001(Jun. 25)
Author:鹿間 直人; 小口 正彦; 佐々木 茂; 篠田 充功; 西川 敦; 荒川 和清; 小岩井 慶一郎; 望月 健太郎; 山田 哲; 渡辺 智治; 角谷 眞澄; シカマ ナオト; オグチ マサヒロ; ササキ シゲル; シノダ アツノリ; ニシカワ アツシ; アラカワ カズキヨ; コイワイ ケイイチロウ; モチズキ ケンタロウ; ヤマダ アキラ; ワタナベ トモハル; カドヤ マスミ; Shikama Naoto; Oguchi Masahiko; Sasaki Sigeru; Shinoda Atsunori; Nishiwaka Atsushi; Arakawa Kazukiyo; Koiwai Keiichirou; Mochizuki Kentarou; Yamada Akira; Watanabe Tomoharu; Kadoya Masumi;


131I-MIBGが全く集積しなかった褐色細胞腫の1例
臨床核医学,34(3):40-42 2001(May 01)
Author:小岩丼慶一郎、百瀬充浩、渡辺智治、佐々木茂、角谷員澄


14.肺線維症に合併した肺癌の検討(第77回 中部肺癌学会)
肺癌,40(7) 2000(Dec. 20)
Author:小岩井 慶一郎; 川上 聡; 高島 庄太夫; 斉藤 彰俊;