放射線腫瘍科

研究業績

2024年度

• Kanayama N, Ikawa T, Takano K, Arita H, Morimoto M, Hirata T, Ogawa K, Teshima T, Konishi K. Association of increasing gross tumor volume dose with tumor volume reduction and local control in fractionated stereotactic radiosurgery for unresected brain metastases. Radiat Oncol. 2024 Jul 27;19(1):95.
• Ikawa T, Kanayama N, Arita H, Takano K, Sakai M, Morimoto M, Tanaka K, Yoshino Y, Tamenaga S, Konishi K. Multifraction stereotactic radiotherapy utilizing inhomogeneous dose distribution for brainstem metastases: a single-center retrospective analysis. J Radiat Res. 2024 Sep 24;65(5):658-666.
• Nagayasu Y, Ohira S, Ikawa T, Masaoka A, Kanayama N, Nishi T, Kazunori T, Yoshino Y, Miyazaki M, Ueda Y, Konishi K. Enhancing the Contouring Efficiency for Head and Neck Cancer Radiotherapy Using Atlas-based Auto-segmentation and Scripting. In Vivo. 2024 Jul-Aug;38(4):1712-1718.
• Nitta Y, Ueda Y, Ohira S, Isono M, Hirose A, Inui S, Murata S, Minami H, Sagawa T, Nagayasu Y, Miyazaki M, Konishi K. Feasibility of a portable respiratory training system with a gyroscope sensor. Br J Radiol. 2024 May 29;97(1158):1162-1168.
• Kihara S, Ohira S, Kanayama N, Ikawa T, Ueda Y, Inui S, Minami H, Sagawa T, Miyazaki M, Koizumi M, Konishi K. The effects of distance between the imaging isocenter and brain center on the image quality of cone-beam computed tomography for brain stereotactic irradiation. Phys Eng Sci Med. 2024 Jun;47(2):597-609.
• Ueda Y, Ikezawa K, Sagawa T, Isono M, Ohira S, Miyazaki M, Takada R, Yamai T, Ohkawa K, Teshima T, Konishi K. Dosimetric characteristics of self-expandable metallic and plastic stents for transpapillary biliary decompression in external beam radiotherapy. Phys Eng Sci Med. 2024 Dec;47(4):1323-1335.
• Nagayasu Y, Inui S, Ueda Y, Masaoka A, Tominaga M, Miyazaki M, Konishi K. Retrospective Comparison of Geometrical Accuracy among Atlas-based Auto-segmentation, Deep Learning Auto-segmentation, and Deformable Image Registration in the Treatment Replanning for Adaptive Radiotherapy of Head-and-Neck Cancer. J Med Phys. 2024 Jul-Sep;49(3):335-342.
• Kihara S, Ohira S, Kanayama N, Ikawa T, Inui S, Isono M, Nitta Y, Ueda Y, Nishio T, Konishi K. Effects of Institutional Experience on Plan Quality in Stereotactic Radiotherapy Using HyperArc for Brain Metastases. In Vivo. 2025 Jan-Feb;39(1):210-217.

2023年度

• Ikawa T, Kanayama N, Arita H, Ohira S, Takano K, Hirata T, Morimoto M, Teshima T, Konishi K. Linear accelerator-based stereotactic radiotherapy for brain metastases, including multiple and large lesions, carries a low incidence of acute toxicities: a retrospective analysis. Radiat Oncol. 2023 May 10;18(1):80.
• Ohira S, Ikawa T, Kanayama N, Inui S, Ueda Y, Miyazaki M, Nishio T, Koizumi M, Konishi K. Dose reduction of hippocampus using HyperArc planning in postoperative radiotherapy for primary brain tumors. Med Dosim. 2023 Summer;48(2):67-72.
• Inui S, Takahashi Y, Ueda Y, Ohira S, Washio H, Ono S, Miyazaki M, Nishio T, Koizumi M, Konishi K. Dosimetric Comparison of Helical Tomotherapy and HyperArc Treatment Plans for Angiosarcoma of the Scalp. Anticancer Res. 2023 Jul;43(7):3079-3087.
• Ohira S, Ikawa T, Inui S, Kanayama N, Ueda Y, Miyazaki M, Nishio T, Koizumi M, Konishi K. Improvement of target coverage using automated non-coplanar volumetric modulated arc therapy planning in stereotactic radiotherapy for cervical metastatic spinal tumors. Med Dosim. 2023 Autumn;48(3):197-201.
• Ueda H, Ueda Y, Ikawa T, Ohira S, Miyazaki M, Enomoto K, Sakai K, Konishi K. Effect of topical agents on skin surface dose in volumetric modulated arc therapy for head and neck cancer. J Radiat Res. 2023 Jul 18;64(4):644-650.
• Ueda Y, Fukunaga JI, Kamima T, Shimizu Y, Kubo K, Doi H, Monzen H. Standardization of knowledge-based volumetric modulated arc therapy planning with a multi-institution model (broad model) to improve prostate cancer treatment quality. Phys Eng Sci Med. 2023 Sep;46(3):1091-1100.
• Ohira S, Ikawa T, Kanayama N, Minamitani M, Kihara S, Inui S, Ueda Y, Miyazaki M, Yamashita H, Nishio T, Koizumi M, Nakagawa K, Konishi K. Dual-energy computed tomography-based iodine concentration as a predictor of histopathological response to preoperative chemoradiotherapy for pancreatic cancer. J Radiat Res. 2023 Nov 21;64(6):940-947.
• Yamamoto Y, Ohira S, Kanayama N, Inui S, Ueda Y, Koike Y, Miyazaki M, Nishio T, Koizumi M, Konishi K. Comparison of dosimetric parameters and robustness for rotational errors in fractionated stereotactic irradiation using automated noncoplanar volumetric modulated arc therapy for patients with brain metastases: single- versus multi-isocentric technique. Radiol Phys Technol. 2023 Jun;16(2):310-318.
• Ohira S, Suzuki Y, Washio H, Yamamoto Y, Tateishi S, Inui S, Kanayama N, Kawamata M, Miyazaki M, Nishio T, Koizumi M, Nakanishi K, Konishi K. Impact of magnetic resonance imaging-related geometric distortion of dose distribution in fractionated stereotactic radiotherapy in patients with brain metastases. Strahlenther Onkol. 2024 Jan;200(1):39-48.

2022年度

• Kanayama N, Ikawa T, Ohira S, Hirata T, Morimoto M, Ogawa K, Teshima T, Konishi K. Volumetric reduction of brain metastases after stereotactic radiotherapy: Prognostic factors and effect on local control. Cancer Med. 2022 Dec;11(24):4806-4815.
• Sagawa T, Ueda Y, Tsuru H, Kamima T, Ohira S, Tamura M, Miyazaki M, Monzen H, Konishi K. Dosimetric potential of knowledge-based planning model trained with HyperArc plans for brain metastases. J Appl Clin Med Phys. 2023 Feb;24(2):e13836.
• Ohira S, Inui S, Kanayama N, Ueda Y, Miyazaki M, Koizumi M, Konishi K. Automated Non-coplanar Volumetric Modulated Arc Therapy Planning for Maxillary Sinus Carcinoma. In Vivo. 2023 Jan-Feb;37(1):417-423.
• Ohira S, Komiyama R, Kanayama N, Sakai K, Hirata T, Yoshikata K, Ueda Y, Miyazaki M, Nakayama M, Koizumi M, Konishi K. Improvement in bladder volume reproducibility using A-mode portable ultrasound bladder scanner in moderate-hypofractionated volumetric modulated arc therapy for prostate cancer patients. J Appl Clin Med Phys. 2022 Apr;23(4):e13546.
• Ohira S, Komiyama R, Kanayama N, Ueda Y, Inui S, Miyazaki M, Koizumi M, Konishi K. Intra-fractional motion error during HyperArc stereotactic radiosurgery on patients with brain metastases: Comparison of open and full-face clamshell-style immobilization devices. J Appl Clin Med Phys. 2022 Apr;23(4):e13536.