EP-1115: Accuracy of set-up position in lung SBRT

Lung SBRT through Radiobiology

Purpose: Stereotactic body radiation therapy (SBRT) has emerged as a standard treatment modality for medically inoperable early-stage lung cancer patients. The aim of this paper is to calculate radiobiological parameters for a sample of 39 patients who underwent lung SBRT. Materials and Methods: For SBRT, a typical regimen of 50 Gy in 4 5 fractions results in local tumor control rates around 99...

Abdominal compression during lung SBRT

Salvage SBRT for Previously Irradiated Lung Cancer

Purpose: Patients with locally recurrent lung cancer after definitive radiation therapy pose a challenge in management. Surgery is often not an option and chemotherapy offers poor long-term local control. Stereotactic body radiotherapy (SBRT) was investigated in an attempt to salvage locally recurrent lung cancer. Materials and Methods: From March, 2009 to January, 2010, 8 patients who had prev...

Impact of the frequency of online verifications on the patient set-up accuracy and set-up margins

PURPOSE The purpose of the study was to evaluate the patient set-up error of different anatomical sites, to estimate the effect of different frequencies of online verifications on the patient set-up accuracy, and to calculate margins to accommodate for the patient set-up error (ICRU set-up margin, SM). METHODS AND MATERIALS Alignment data of 148 patients treated with inversed planned intensit...

1115 Long-term follow-up after photorefractive keratectomy