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Article
Open AccessSimultaneous boost radiotherapy versus conventional dose radiotherapy for patients with newly diagnosed glioblastoma: a multi-institutional analysis
We compared survival outcomes of high-dose concomitant boost radiotherapy (HDCBRT) and conventional dose radiotherapy (CRT) for newly diagnosed glioblastoma (GB). Patients treated with intensity-modulated radi...
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Article
Open AccessDaily irradiation versus irradiation at two- to three-day intervals in stereotactic radiotherapy for patients with 1-5 brain metastases: study protocol for a multicenter open-label randomized phase II trial
Radiobiological daily changes within tumors are considered to be quite different between stereotactic radiotherapy (SRT) (e.g., 50 Gy in 4 fractions) and conventional radiotherapy (e.g., 60 Gy in 30 fractions)...
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Article
Open AccessImpact of advanced radiotherapy techniques and dose intensification on toxicity of salvage radiotherapy after radical prostatectomy
The safety and efficacy of dose-escalated radiotherapy with intensity-modulated radiotherapy (IMRT) and image-guided radiotherapy (IGRT) remain unclear in salvage radiotherapy (SRT) after radical prostatectomy...
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Article
Factors associated with a preference for disclosure of life expectancy information from physicians: a cross-sectional survey of cancer patients undergoing radiation therapy
This study aimed to investigate experiences and preferences for disclosure of life expectancy, agreement between them, and the factors associated with preferences for disclosure of life expectancy with physici...
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Article
Open AccessStereotactic body radiotherapy for stage I non-small-cell lung cancer using higher doses for larger tumors: results of the second study
Efficacy of stereotactic body radiotherapy (SBRT) in stage I non–small-cell lung cancer (NSCLC) has almost been established. In Japan, the protocol of 48 Gy in 4 fractions over 4 days has been most often emplo...
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Chapter
Radiobiology for IMRT
Since the dose delivery pattern is different between intensity-modulated radiotherapy (IMRT) and conventional radiation, radiobiological assessment of the physical dose delivered by IMRT is considered necessar...
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Article
Primary CNS lymphoma treated with radiotherapy in Japan: a survey of patients treated in 2005–2009 and a comparison with those treated in 1985–2004
The aim of our study was to analyze changes over time in the characteristics, treatment, and outcome of patients with primary central nervous system lymphoma (PCNSL).
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Article
Open AccessIntensity-modulated radiation therapy using static ports of tomotherapy (TomoDirect): comparison with the TomoHelical mode
With the new mode of Tomotherapy, irradiation can be delivered using static ports of the TomoDirect mode. The purpose of this study was to evaluate the characteristics of TomoDirect plans compared to conventio...
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Article
Open AccessTreatment and prognosis of patients with late rectal bleeding after intensity-modulated radiation therapy for prostate cancer
Radiation proctitis after intensity-modulated radiation therapy (IMRT) differs from that seen after pelvic irradiation in that this adverse event is a result of high-dose radiation to a very small area in the ...
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Article
Open AccessClinical outcomes of stereotactic body radiotherapy for stage I non-small cell lung cancer using different doses depending on tumor size
The treatment schedules for stereotactic body radiotherapy (SBRT) for lung cancer vary from institution to institution. Several reports have indicated that stage IB patients had worse outcomes than stage IA pa...
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Article
Radiotherapy for metastatic brain tumors
Radiation therapy has been the most important treatment for patients with brain metastases. With the development of stereotactic irradiation, conventional radiotherapy is being employed less often. However, wh...
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Article
Open AccessStereotactic body radiotherapy for stage I lung cancer and small lung metastasis: evaluation of an immobilization system for suppression of respiratory tumor movement and preliminary results
In stereotactic body radiotherapy (SBRT) for lung tumors, reducing tumor movement is necessary. In this study, we evaluated changes in tumor movement and percutaneous oxygen saturation (SpO2) levels, and prelimin...
