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Natsuo Oya

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Tomohiko Matsuyama; Kasei Kogo; Natsuo Oya
Clinical outcomes of biological effective dose-based fractionated stereotactic radiation therapy for metastatic brain tumors from non-small cell lung cancer.
Ryo Toya; Naoko Tsujita; Morikatsu Yoshida; Koichi Kawanaka; Ryuji Murakami; Yuji Nakaguchi; Natsuo Oya; Fumi Sakamoto; Shinya Shiraishi; Kuniyuki Tashiro; Seiji Tomiguchi; Yasuyuki Yamashita
FDG-PET/CT-based gross tumor volume contouring for radiation therapy planning: an experimental phantom study.
Tetsuo Saito; Takashi Sakamoto; Natsuo Oya
Effect of gating window width on lung dosimetric parameters and on treatment time at gated radiotherapy for lung cancer.

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All Publications

2013: Tomohiko Matsuyama; Kasei Kogo; Natsuo Oya
Clinical outcomes of biological effective dose-based fractionated stereotactic radiation therapy for metastatic brain tumors from non-small cell lung cancer.
International journal of radiation oncology, biology, physics 2013;85(4):984-90.
2012: Ryo Toya; Naoko Tsujita; Morikatsu Yoshida; Koichi Kawanaka; Ryuji Murakami; Yuji Nakaguchi; Natsuo Oya; Fumi Sakamoto; Shinya Shiraishi; Kuniyuki Tashiro; Seiji Tomiguchi; Yasuyuki Yamashita
FDG-PET/CT-based gross tumor volume contouring for radiation therapy planning: an experimental phantom study.
Journal of radiation research 2012;53(2):338-41.
2011: Tetsuo Saito; Takashi Sakamoto; Natsuo Oya
Effect of gating window width on lung dosimetric parameters and on treatment time at gated radiotherapy for lung cancer.
Acta oncologica (Stockholm, Sweden) 2011;50(8):1246-9.
2011: Hiroshi Takamori; Keiichiro Kanemitsu; Masahiko Hirota; Osamu Ikeda; Hiroshi Tanaka; Toru Beppu; Yasuyuki Yamashita; Natsuo Oya; Hideo Baba
Perioperative intra-arterial and systemic chemotherapy for pancreatic cancer.
Annals of surgical oncology 2011;18(4):1110-5.
2011: Keiko Shibuya; Natsuo Oya; Takashi Fujii; Ryuichiro Doi; Akira Nakamura; Yukinori Matsuo; Michihide Mitsumori; Masahiro Hiraoka
Phase II study of radiation therapy combined with weekly low-dose gemcitabine for locally advanced, unresectable pancreatic cancer.
American journal of clinical oncology 2011;34(2):115-9.
2011: Katsuyuki Sakanaka; Takashi Mizowaki; Yoshiki Arakawa; Norio Araki; Natsuo Oya; Jun A Takahashi; Nobuhiro Mikuni; Susumu Miyamoto; Nobuo Hashimoto; Masahiro Hiraoka
Hypofractionated stereotactic radiotherapy for acoustic neuromas: safety and effectiveness over 8 years of experience.
International journal of clinical oncology 2011;16(1):27-32.
2010: Kenji Shiraishi; Hiroaki Nomori; Yasuomi Ohba; Masahiro Kaji; Takeshi Mori; Hidekatsu Shibata; Natsuo Oya; Jiichiro Sasaki
Repeat FDG-PET for predicting pathological tumor response and prognosis after neoadjuvant treatment in nonsmall cell lung cancer: comparison with computed tomography.
Annals of thoracic and cardiovascular surgery : official journal of the Association of Thoracic and Cardiovascular Surgeons of Asia 2010;16(6):394-400.
2010: Tetsuo Saito; Takashi Sakamoto; Natsuo Oya
Predictive factors for lung dose reduction by respiratory gating at radiotherapy for lung cancer.
Journal of radiation research 2010;51(6):691-8.
2009: Tetsuo Saito; Takashi Sakamoto; Natsuo Oya
Comparison of gating around end-expiration and end-inspiration in radiotherapy for lung cancer.
Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology 2009;93(3):430-5.
2009: Takashi Sakamoto; Natsuo Oya; Keiko Shibuya; Yasushi Nagata; Masahiro Hiraoka
Dose-response relationship and dose optimization in radiotherapy of postoperative keloids.
Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology 2009;91(2):271-6.
2009: Ryo Toya; Ryuji Murakami; Tadamasa Yasunaga; Yuji Baba; Ryuichi Nishimura; Shoji Morishita; Junko Nishi; Toru Beppu; Hideo Baba; Yasuyuki Yamashita; Natsuo Oya
Radiation therapy for lymph node metastases from hepatocellular carcinoma.
Hepato-gastroenterology 2009;56(90):476-80.
2007: hideyuki kano; Jun A Takahashi; Takahisa Katsuki; Norio Araki; Natsuo Oya; Masahiro Hiraoka; Nobuo Hashimoto
Stereotactic radiosurgery for atypical and anaplastic meningiomas.
Journal of neuro-oncology 2007;84(1):41-7.
2006: Tsuneo Saga; Hidekazu Kawashima; Norio Araki; Jun A Takahashi; Yasuaki Nakashima; Tatsuya Higashi; Natsuo Oya; Takahiro Mukai; Masato Hojo; Nobuo Hashimoto; Toshiaki Manabe; Masahiro Hiraoka; Kaori Togashi
Evaluation of primary brain tumors with FLT-PET: usefulness and limitations.
Clinical nuclear medicine 2006;31(12):774-80.
2006: Tomokazu Aoki; Jun A Takahashi; Tetsuya Ueba; Natsuo Oya; Masahiro Hiraoka; Kunihiko Matsui; Tsugiya Fukui; Yasuaki Nakashima; Masatsune Ishikawa; Nobuo Hashimoto
Phase II study of nimustine, carboplatin, vincristine, and interferon-beta with radiotherapy for glioblastoma multiforme: experience of the Kyoto Neuro-Oncology Group.
Journal of neurosurgery 2006;105(3):385-91.
2006: Masato Sakamoto; Natsuo Oya; Takashi Mizowaki; Norio Araki; Yasushi Nagata; Kenji Takayama; Jun A Takahashi; hideyuki kano; Takahisa Katsuki; Nobuo Hashimioto; Masahiro Hiraoka
Initial experiences of palliative stereotactic radiosurgery for recurrent brain lymphomas.
Journal of neuro-oncology 2006;77(1):53-8.
2006: Masaru Narabayashi; Michihide Mitsumori; Norio Araki; Chikako Yamauchi; Sachiko Kawamura; Takashi Sakamoto; Seiji Tachiiri; Natsuo Oya; Yasushi Nagata; Masahiro Hiraoka; Keiichi Mise; Hiroshi Kodama
A case of metachronous bilateral breast cancer with bilateral radiation pneumonitis after breast-conserving therapy.
Breast cancer (Tokyo, Japan) 2006;13(3):313-6.
2006: Natsuo Oya; Keisuke Sasai; Seiji Tachiiri; Takashi Sakamoto; Yasushi Nagata; Takashi Okada; Shinsuke Yano; Takayuki Ishikawa; Takashi Uchiyama; Masahiro Hiraoka
Influence of radiation dose rate and lung dose on interstitial pneumonitis after fractionated total body irradiation: acute parotitis may predict interstitial pneumonitis.
International journal of hematology 2006;83(1):86-91.
2006: Natsuo Oya; Keiko Shibuya; Takashi Sakamoto; Takashi Mizowaki; Ryuichiro Doi; Koji Fujimoto; Masayuki Imamura; Yasushi Nagata; Masahiro Hiraoka
Chemoradiotherapy in patients with pancreatic carcinoma: phase-I study with a fixed radiation dose and escalating doses of weekly gemcitabine.
Pancreatology : official journal of the International Association of Pancreatology (IAP) ... [et al.] 2006;6(1-2):109-16.
2006: Seiji Tachiiri; Toyomasa Katagiri; Tatsuhiko Tsunoda; Natsuo Oya; Masahiro Hiraoka; Yusuke Nakamura
Analysis of gene-expression profiles after gamma irradiation of normal human fibroblasts.
International journal of radiation oncology, biology, physics 2006;64(1):272-9.
2005: Tomitaka Nakayama; Tadao Tsuboyama; Junya Toguchida; Chiaki Tanaka; Natsuo Oya; Masahiro Hiraoka; Takashi Nakamura
Recurrence of osteosarcoma after intraoperative radiation therapy.
Orthopedics 2005;28(10):1195-7.
2004: Setsuko Okumura; Michihide Mitsumori; Chikako Yamauchi; Sachiko Kawamura; Natsuo Oya; Yasushi Nagata; Masahiro Hiraoka; Masaki Kokubo; Keiichi Mise; Hiroshi Kodama
Feasibility of breast-conserving therapy for macroscopically multiple ipsilateral breast cancer.
International journal of radiation oncology, biology, physics 2004;59(1):146-51.
2004: Tetsuya Aoki; Yasushi Nagata; Yoshiharu Negoro; Kenji Takayama; Takashi Mizowaki; Masaki Kokubo; Natsuo Oya; Michihide Mitsumori; Masahiro Hiraoka
Evaluation of lung injury after three-dimensional conformal stereotactic radiation therapy for solitary lung tumors: CT appearance.
Radiology 2004;230(1):101-8.
2003: Masakazu Ogura; Michihide Mitsumori; Setsuko Okumura; Chikako Yamauchi; Sachiko Kawamura; Natsuo Oya; Yasushi Nagata; Masahiro Hiraoka
Radiation therapy for brain metastases from breast cancer.
Breast cancer (Tokyo, Japan) 2003;10(4):349-55.
2003: Setsuko Okumura; Michihide Mitsumori; Masaki Kokubo; Chikako Yamauchi; Sachiko Kawamura; Natsuo Oya; Yasushi Nagata; Masahiro Hiraoka
Late skin and subcutaneous soft tissue changes after 10-gy boost for breast conserving therapy.
Breast cancer (Tokyo, Japan) 2003;10(2):129-33.
2002: Natsuo Oya; Yuta Shibamoto; Yasushi Nagata; Yoshiharu Negoro; Masahiro Hiraoka
Postoperative radiotherapy for intracranial ependymoma: analysis of prognostic factors and patterns of failure.
Journal of neuro-oncology 2002;56(1):87-94.
2001: Natsuo Oya; Masaki Kokubo; Takashi Mizowaki; Yuta Shibamoto; Yasushi Nagata; Keisuke Sasai; Yasumasa Nishimura; Tadao Tsuboyama; Junya Toguchida; Tetsuya Nakamura; Masahiro Hiraoka
Definitive intraoperative very high-dose radiotherapy for localized osteosarcoma in the extremities.
International journal of radiation oncology, biology, physics 2001;51(1):87-93.
2001: Yuta Shibamoto; Keisuke Sasai; Natsuo Oya; Masahiro Hiraoka
Intracranial germinoma: radiation therapy with tumor volume-based dose selection.
Radiology 2001;218(2):452-6.
2001: H Yu ; Michihide Mitsumori; Yasushi Nagata; Y Katakura; Masaki Kokubo; Natsuo Oya; S Fujishiro; Keisuke Sasai; Masahiro Hiraoka; Norimichi Kan
Meningeal carcinomatosis in patients with breast cancer: report of 8 patients.
Breast cancer (Tokyo, Japan) 2001;8(1):74-8.
2000: Seiji Tachiiri; Keisuke Sasai; Natsuo Oya; Masahiro Hiraoka
Enhanced cell killing by overexpression of dominant-negative phosphatidylinositol 3-kinase subunit, Deltap85, following genotoxic stresses.
Japanese journal of cancer research : Gann 2000;91(12):1314-8.
2000: Keisuke Sasai; H Yamabe; Masaki Kokubo; Toru Shibata; Natsuo Oya; Yasushi Nagata; Masahiro Hiraoka
Head-and-neck stages I and II extranodal non-Hodgkin's lymphomas: real classification and selection for treatment modality.
International journal of radiation oncology, biology, physics 2000;48(1):153-60.
2000: Masaki Kokubo; Yuta Shibamoto; Jun A Takahashi; Keisuke Sasai; Natsuo Oya; Nobuo Hashimoto; Masahiro Hiraoka
Efficacy of conventional radiotherapy for recurrent meningioma.
Journal of neuro-oncology 2000;48(1):51-5.
2000: Masaki Kokubo; Keisuke Sasai; Yuta Shibamoto; T Aoki; Natsuo Oya; M Mitsumori; Jun A Takahashi; Nobuo Hashimoto; Masahiro Hiraoka
Long-term results of radiation therapy for pituitary adenoma.
Journal of neuro-oncology 2000;47(1):79-84.
1999: GZ Guo; Keisuke Sasai; Natsuo Oya; Toru Shibata; Keiko Shibuya; Masahiro Hiraoka
A significant correlation between clonogenic radiosensitivity and the simultaneous assessment of micronucleus and apoptotic cell frequencies.
International journal of radiation biology 1999;75(7):857-64.
1999: Yuta Shibamoto; Keisuke Sasai; Natsuo Oya; Masahiro Hiraoka
Systemic chemotherapy with vincristine, cyclophosphamide, doxorubicin and prednisolone following radiotherapy for primary central nervous system lymphoma: a phase II study.
Journal of neuro-oncology 1999;42(2):161-7.
1998: Keisuke Sasai; GZ Guo; Keiko Shibuya; Natsuo Oya; Toru Shibata; Y Nagata; Masahiro Hiraoka
Effects of SN-38 (an active metabolite of CPT-11) on responses of human and rodent cells to irradiation.
International journal of radiation oncology, biology, physics 1998;42(4):785-8.
1998: T Takagi; Keisuke Sasai; Y Shibamoto; K Akagi; Natsuo Oya; Toru Shibata; J Kim; Masahiro Hiraoka
The influence of DNA ploidy of a human tumor cell line on the frequencies of micronuclei or chromosome aberrations after irradiation.
Mutation research 1998;418(1):49-57.
1998: GZ Guo; Keisuke Sasai; Natsuo Oya; T Takagi; Keiko Shibuya; Masahiro Hiraoka
Simultaneous evaluation of radiation-induced apoptosis and micronuclei in five cell lines.
International journal of radiation biology 1998;73(3):297-302.
1996: Yuta Shibamoto; R Murata; S Miyauchi; M Hirohashi; T Takagi; Keisuke Sasai; Toru Shibata; Natsuo Oya; M Takahashi
Combined effect of clinically relevant doses of emitefur, a new 5-fluorouracil derivative, and radiation in murine tumours.
British journal of cancer 1996;74(11):1709-13.
1996: R Murata; Yuta Shibamoto; S Miyauchi; M Hirohashi; T Takagi; Keisuke Sasai; Natsuo Oya; Masahiro Hiraoka
The combined antitumour effect of a new 5-fluorouracil derivative, BOF-A2, and radiation in vivo.
The British journal of cancer. Supplement 1996;27():S114-6.
1996: Toru Shibata; Yuta Shibamoto; Keisuke Sasai; Natsuo Oya; R Murata; T Takagi; Masahiro Hiraoka; M Takahashi; M Abe
Tirapazamine: hypoxic cytotoxicity and interaction with radiation as assessed by the micronucleus assay.
The British journal of cancer. Supplement 1996;27():S61-4.
1996: R Murata; Yuta Shibamoto; Keisuke Sasai; Natsuo Oya; Toru Shibata; T Takagi; M Abe
Reoxygenation after single irradiation in rodent tumors of different types and sizes.
International journal of radiation oncology, biology, physics 1996;34(4):859-65.
1996: Natsuo Oya; Y Nagata; Nagara Tamaki; T Takagi; R Murata; Yasuhiro Magata; M Abe; Junji Konishi
FDG-PET evaluation of therapeutic effects on VX2 liver tumor.
Journal of nuclear medicine : official publication, Society of Nuclear Medicine 1996;37(2):296-302.
1996: Toru Shibata; Yuta Shibamoto; Keisuke Sasai; Natsuo Oya; R Murata; T Takagi; Masahiro Hiraoka; M Abe
Comparison of in vivo efficacy of hypoxic cytotoxin tirapazamine and hypoxic cell radiosensitizer KU-2285 in combination with single and fractionated irradiation.
Japanese journal of cancer research : Gann 1996;87(1):98-104.
1995: Natsuo Oya; Yuta Shibamoto; Keisuke Sasai; Toru Shibata; R Murata; T Takagi; H Iwai; T Suzuki; M Abe
Optical isomers of a new 2-nitroimidazole nucleoside analog (PR-350 series): radiosensitization efficiency and toxicity.
International journal of radiation oncology, biology, physics 1995;33(1):119-27.
1995: Toru Shibata; Yuta Shibamoto; Keisuke Sasai; Natsuo Oya; T Takagi; R Murata; M Abe
Assessment of micronucleus induction in SCCVII cells treated with bioreductive agents, WIN 59075 (SR 4233) and mitomycin C, under aerobic and hypoxic conditions.
Mutation research 1995;342(3-4):171-7.
1994: Natsuo Oya; Yuta Shibamoto; Toru Shibata; Keisuke Sasai; T Sugiyama; M Abe
Combined cytokinesis-block micronucleus and chromosomal aberration assay for the evaluation of radiosensitizers at low radiation doses.
International journal of radiation oncology, biology, physics 1994;30(5):1153-9.
1994: Yasumasa Nishimura; Koji Ono; K Tsutsui; Natsuo Oya; K Okajima; Masahiro Hiraoka; M Abe
Esophageal cancer treated with radiotherapy: impact of total treatment time and fractionation.
International journal of radiation oncology, biology, physics 1994;30(5):1099-105.
1994: Natsuo Oya; Yuta Shibamoto; Toru Shibata; R Murata; H Iwai; T Sugiyama; M Abe
KIN-804 vs. KU-2285 as a radiosensitizer for clinical use.
International journal of radiation oncology, biology, physics 1994;29(3):595-600.
1994: Toru Shibata; Yuta Shibamoto; Natsuo Oya; Keisuke Sasai; R Murata; T Ishigaki; M Abe
Comparison of radiosensitizing effect of KU-2285 and SR-2508 at low drug concentrations and doses.
International journal of radiation oncology, biology, physics 1994;29(3):587-90.
1994: Yuta Shibamoto; Y Kitakabu; R Murata; Natsuo Oya; Toru Shibata; Keisuke Sasai; M Takahashi; M Abe
Reoxygenation in the SCCVII tumor after KU-2285 sensitization plus single or fractionated irradiation.
International journal of radiation oncology, biology, physics 1994;29(3):583-6.
1994: Keisuke Sasai; H Iwai; T Yoshizawa; Sei-ichi Nishimoto; Yuta Shibamoto; Natsuo Oya; Toru Shibata; M Abe
Fluorinated 2-nitroimidazole derivative hypoxic cell radiosensitizers: radiosensitizing activities and pharmacokinetics.
International journal of radiation oncology, biology, physics 1994;29(3):579-82.
1993: Natsuo Oya; Yuta Shibamoto; Keisuke Sasai; T Sugiyama; M Abe
In vivo radiosensitization efficacy of KU-2285 and etanidazole at clinically relevant low radiation doses.
International journal of radiation oncology, biology, physics 1993;27(5):1113-9.
1993: Natsuo Oya; Y Nagata; T Ishigaki; M Abe; Nagara Tamaki; Yasuhiro Magata; Junji Konishi
Evaluation of experimental liver tumors using fluorine-18-2-fluoro-2-deoxy-D-glucose PET.
Journal of nuclear medicine : official publication, Society of Nuclear Medicine 1993;34(12):2124-9.
1992: Keisuke Sasai; H Iwai; T Yoshizawa; Sei-ichi Nishimoto; Yuta Shibamoto; Y Kitakabu; Natsuo Oya; M Takahashi; M Abe
Pharmacokinetics of fluorinated 2-nitroimidazole hypoxic cell radiosensitizers in murine peripheral nervous tissue.
International journal of radiation biology 1992;62(2):221-7.
1992: Yuta Shibamoto; C Streffer; Keisuke Sasai; Natsuo Oya; M Abe
Radiosensitization efficacy of KU-2285, RP-170 and etanidazole at low radiation doses: assessment by in vitro cytokinesis-block micronucleus assay.
International journal of radiation biology 1992;61(4):473-8.