PURPOSE Esophageal tolerance is needed to guide the safe administration of stereotactic radiosurgery (SRS). We evaluated comprehensive dose-volume parameters of acute esophageal toxicity in patients with spinal metastasis treated with SRS. MATERIALS AND METHODS From May 2008 to May 2011, 30 cases in 27 patients with spinal metastasis received single fraction SRS to targets neighboring esophag...

Introduction: The present study evaluated the dosimetric comparison between 6MV flattened filter (FF) and flattening filter-free (FFF) photon beams in intensity-modulated radiation therapy (IMRT) technique for the treatment of glioblastoma (GBM) patients. Material and Methods: The present study was conducted on 10 patients with GBM previously...

Radiation therapy is an important modality in treating various cancers. Various treatment planning and delivery technologies have emerged to support Intensity Modulated Radiation Therapy (IMRT), creating significant opportunities to advance this type of treatment. We investigate the possibility of including the dose prescription, specified by the Dose Volume Histogram (DVH), within the convex o...

Introduction: The presence of heterogeneities such as air-filled cavities in the head and neck treatment fields region, may result in potential dosimetric disagreement because the losses of charged particle equilibrium. Most of treatments planning systems are not able to predict dose distribution of inhomogeneities region accurately. Therefore, dose calculation algorithms need to...

Purpose: Multi-fraction high-dose-rate (HDR) brachytherapy (BT) is an important element in the treatment regimen for locally advanced carcinoma of cervix. While standard treatment planning guidelines have been established for dose-volume-histogram (DVH) based thresholds for the surrounding organs at risk (OAR), there are still high-grade complications observed in these OAR that cannot be explai...

Radiation therapy is an important modality in treating various cancers. Various treatment planning and delivery technologies have emerged to support Intensity Modulated Radiation Therapy (IMRT), creating significant opportunities to advance this type of treatment. We investigate the possibility of including the dose prescription, specified by the Dose Volume Histogram (DVH), within the convex o...

The modern CT simulator is capable of interactive three-dimensional (3D) volumetric treatment planning; this allows radiation oncology departments to operate without conventional X-ray simulators. Treatment planning is performed at the time of virtual simulation by contouring the organs or volumes of interest and determining the isocenter. A digitally reconstructed radiograph (DRR) provides a b...