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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 AccessImpact of radiation doses on clinical relapse of biochemically recurrent prostate cancer after prostatectomy
The relationship between radiation doses and clinical relapse in patients receiving salvage radiotherapy (SRT) for biochemical recurrence (BCR) after radical prostatectomy (RP) remains unclear. We identified 2...
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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 AccessRelationship between radiation doses to heart substructures and radiation pneumonitis in patients with thymic epithelial tumors
Radiation doses to the heart are potentially high in patients undergoing radiotherapy for thymoma or thymic carcinoma because of their origin site and propensity for pericardial invasion. We investigated poten...
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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
Open AccessRepeat stereotactic body radiotherapy (SBRT) for local recurrence of non-small cell lung cancer and lung metastasis after first SBRT
This study evaluated the safety and efficacy of repeat SBRT for local recurrence of stage I non-small-cell lung cancer (NSCLC) and solitary lung metastasis.
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Article
Open AccessEfficacy of virtual block objects in reducing the lung dose in helical tomotherapy planning for cervical oesophageal cancer: a planning study
Intensity-modulated radiotherapy is useful for cervical oesophageal carcinoma (CEC); however, increasing low-dose exposure to the lung may lead to radiation pneumonitis. Nevertheless, an irradiation technique ...
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Article
High-dose radiotherapy with helical tomotherapy and long-term androgen deprivation therapy for prostate cancer: 5-year outcomes
We aimed to examine outcomes of high-dose radiotherapy with helical tomotherapy (HT) and long-term androgen deprivation therapy (ADT) for T1–4N0M0 prostate cancer.
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Article
Open AccessEfficacy of palliative radiotherapy for gastric bleeding in patients with unresectable advanced gastric cancer: a retrospective cohort study
Bleeding negatively impacts quality of life in patients with unresectable advanced gastric cancer and has the potential to be lethal. When blood transfusion and endoscopic hemostasis are unsuccessful to stop b...
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Article
A case of severe hemoptysis after stereotactic body radiotherapy for peripherally located stage I non-small cell lung cancer
In stereotactic body radiotherapy (SBRT) for centrally located non-small cell lung carcinoma (NSCLC), severe hemoptysis has been reported in several studies. We report here a rare case of hemoptysis after SBRT...
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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
Preliminary results of intensity-modulated radiation therapy with helical tomotherapy for prostate cancer
We present the preliminary results of intensity-modulated radiation therapy with helical tomotherapy (HT) for clinically localized prostate cancer.
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Article
A case of cervical multicentric Castleman disease treated with intensity-modulated radiation therapy using helical tomotherapy
Castleman disease (CD) is a rare lymphoproliferative disorder. Two clinical entities are described: a unicentric form with disease confined to a single lymph node region and a multicentric form characterized b...
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Article
Long-term follow-up and a detailed prognostic analysis of patients with oropharyngeal cancer treated with radiotherapy
To find a prognostic factor for patients with oropharyngeal cancer (OPC) who were followed for long term after definitive radiotherapy.
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Article
Early salvage radiotherapy for patients with PSA relapse after radical prostatectomy
To assess the effectiveness of early salvage radiotherapy (RT) for patients with prostate-specific antigen (PSA) relapse after radical prostatectomy (RP) retrospectively.
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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...
