International journal of radiation oncology, biology, physics
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Int. J. Radiat. Oncol. Biol. Phys. · Jun 2005
Anal canal carcinoma: early-stage tumors < or =10 mm (T1 or Tis): therapeutic options and original pattern of local failure after radiotherapy.
To investigate the clinical history, management, and pattern of recurrence of very early-stage anal canal cancer in a French retrospective survey. ⋯ Most recurrences occurred after a long disease-free interval after treatment and often outside the initial tumor site. These small anal cancers could be treated by RT using a small volume and moderate dose (40-50 Gy for subclinical lesions and 50-60 Gy for T1).
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Int. J. Radiat. Oncol. Biol. Phys. · Jun 2005
Clinical TrialPhase I study of thoracic radiation dose escalation with concurrent chemotherapy for patients with limited small-cell lung cancer: Report of Radiation Therapy Oncology Group (RTOG) protocol 97-12.
The purpose of RTOG 97-12 was to determine the maximum tolerated dose (MTD) of thoracic radiation therapy (RT) with concurrent chemotherapy for patients with limited-stage small-cell lung cancer. ⋯ The MTD for this accelerated thoracic RT regimen with concurrent PE was 61.2 Gy over 5 weeks.
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Maintenance of Certification (MOC) recognizes that in addition to medical knowledge, several essential elements involved in delivering quality care must be developed and maintained throughout one's career. The MOC process is designed to facilitate and document professional development of American Board of Radiology (ABR) diplomates in the essential elements of quality care in Radiation Oncology and Radiologic Physics. ABR MOC has been developed in accord with guidelines of the American Board of Medical Specialties. ⋯ Maintenance of Certification is based on documentation of participation in the four components of MOC: (1) professional standing, (2) lifelong learning and self-assessment, (3) cognitive expertise, and (4) performance in practice. Through these components, MOC addresses six competencies-medical knowledge, patient care, interpersonal and communication skills, professionalism, practice-based learning and improvement, and systems-based practice. Details of requirements for components 1, 2, and 3 of MOC are outlined along with aspects of the fourth component currently under development.
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Int. J. Radiat. Oncol. Biol. Phys. · Jun 2005
Surface optimization technique for MammoSite breast brachytherapy applicator.
We present a technique to optimize the dwell times and positions of a high-dose-rate (192)Ir source using the MammoSite breast brachytherapy applicator. The surface optimization method used multiple dwell positions and optimization points to conform the 100% isodose line to the surface of the planning target volume (PTV). ⋯ The surface technique provided greater coverage of the PTV than did the single- and six-point methods. Using the FWHM method, the surface, single-, and six-point techniques resulted in equivalent dose homogeneity.