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20.809  Articles
1 of 2.082 pages  |  10  records  |  more records»
Charged particles can achieve better dose distribution and higher biological effectiveness compared to photon radiotherapy. Carbon ions are considered an optimal candidate for cancer treatment using particles. The National Institute of Radiological Scienc... see more

A phase I study was performed to determine the recommended dose of carbon ion radiotherapy and 3D image-guided brachytherapy for histologically confirmed stage II (=4 cm), III, or IVA cervical cancer. Dose-limiting toxicities (treatment-related toxicities... see more

 
Charged particle therapy with carbon ions has advantages over conventional radiotherapy using x-ray beams. The application of charged particle therapy has rapidly increased over the last decades. This is due to its characteristic Bragg peak which has rela... see more

Background: In radiation therapy with ion beams, lateral distributions of absorbed dose in the tissue are important. Heavy ion therapy, such as carbon-ion therapy, is a novel technique of high-precision external radiotherapy which has advantages over prot... see more

Compared to conventional photon-based external beam radiation (PhXRT), carbon ion radiotherapy (CIRT) has superior dose distribution, higher linear energy transfer (LET), and a higher relative biological effectiveness (RBE). This enhanced RBE is driven by... see more

Pancreatic cancer is a devastating disease with poor survival outcomes. Recent studies have shown that the addition of radiotherapy to chemotherapy in the setting of locally advanced pancreatic cancer did not improve overall survival outcome. These studie... see more

Sugarcane spirit (aguardente) is the most important fermented/distilled beverage in Brazil. If the concentration of cooper (Cu2+) in sugarcane spirits was less than 2.0 mg L-1, it could be exported to several European countries. This study showed that the... see more

In this work, several phenomena related to carbon ion implantation, in amorphous silicon targets, were simulated. The investigation was performed using the TRIM code for a dose of 2.7 ×1017 C+cm-2 and an energy of 80 keV. Several quantities (the projected... see more

In 2011, Brazil will have more than 489,000 new cases of cancer. Of these patients, a considerable contingent will be submitted to radiotherapy procedures. Thus, efficient systems that guarantee the quality of the beams used in radiotherapy procedures are... see more

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