Impact of upgraded radiotherapy system on outcomes in postoperative head and neck squamous cell carcinoma patients Reports of Practical Oncology and Radiotherapy,27(6):954-962 2022(Dec.) Author:Keiichiro Koiwai1, Dai Hirasawa1, Miyu Sugimura1, Yuuki Endo1, Kai Mizuhata1, Hironobu Ina1, Ayumu Fukazawa1, Ryosuke Kitoh2, Hironori Sakai3, Yasunari Fujinaga1
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;
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;
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;
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
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
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;
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;
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;
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