International journal of radiation oncology, biology, physics
-
Int. J. Radiat. Oncol. Biol. Phys. · Jul 2008
Is response to radiotherapy in patients related to the severity of pretreatment pain?
The primary objective of this study was to determine whether there is a relationship between the severity of pretreatment pain and response to palliative radiotherapy (RT) for painful bone metastases. ⋯ There was no significant difference in terms of the proportion of responders (patients with complete or partial response) and nonresponders in terms of painful bone metastases among patients presenting with mild, moderate, or severe pain. Patients with moderate pain should be referred for palliative RT.
-
Int. J. Radiat. Oncol. Biol. Phys. · Jul 2008
Clinical TrialIntensity-modulated radiotherapy for resected mesothelioma: the Duke experience.
To assess the safety and efficacy of intensity-modulated radiotherapy (IMRT) after extrapleural pneumonectomy for malignant pleural mesothelioma. ⋯ With limited follow-up, 45-Gy IMRT provides reasonable local control for mesothelioma after extrapleural pneumonectomy. However, treatment-related pulmonary toxicity remains a significant concern. Care should be taken to minimize the dose to the remaining lung to achieve an acceptable therapeutic ratio.
-
Int. J. Radiat. Oncol. Biol. Phys. · Jul 2008
Three-dimensional motion of liver tumors using cine-magnetic resonance imaging.
To measure the three-dimensional motion of liver tumors using cine-magnetic resonance imaging (MRI) and compare it to the liver motion assessed using fluoroscopy. ⋯ The results of our study have shown that cine-MRI can be used to directly assess liver tumor motion in three dimensions. Tumor motion did not correlate well with the diaphragm motion measured using kilovoltage fluoroscopy. The tumor motion data from cine-MRI can be used to facilitate individualized planning target volume margins to account for breathing motion.
-
Int. J. Radiat. Oncol. Biol. Phys. · Jul 2008
Multicenter StudyRadiotherapy to improve local control regardless of surgical margin and malignancy grade in extremity and trunk wall soft tissue sarcoma: a Scandinavian sarcoma group study.
Adjuvant radiotherapy has during the past decades become increasingly used in the treatment of localized soft tissue sarcoma. We evaluated the effect of radiotherapy (RT) on local recurrence rates (LRRs) in Scandinavia between 1986 and 2005. ⋯ The results of our study have shown that adjuvant RT effectively prevents local recurrence in soft tissue sarcoma, irrespective of the tumor depth, malignancy grade, and surgical margin status. The effect was most pronounced in deep-seated, high-grade tumors, even when removed with a wide surgical margin.
-
Int. J. Radiat. Oncol. Biol. Phys. · Jul 2008
Clinical TrialDosimetric effect of translational and rotational errors for patients undergoing image-guided stereotactic body radiotherapy for spinal metastases.
To investigate the dosimetric effects of translational and rotational patient positioning errors on the treatment of spinal and paraspinal metastases using computed tomography image-guided stereotactic body radiotherapy. The results of this study provide guidance for the treatment planning process and recognition of the dosimetric consequences of daily patient treatment setup errors. ⋯ For the best dosimetric results, spinal stereotactic treatments should have setup translational errors of < or =1 mm and rotational errors of < or =2 degrees .