Changes in radiobiological parameters in 131Cs permanent prostate implants
نویسندگان
چکیده
منابع مشابه
Edema‐induced changes in tumor cell surviving fraction and tumor control probability in 131Cs permanent prostate brachytherapy implant patients
The study is designed to investigate the effect of edema on the delivered dose, tumor cell surviving fraction (SF), and tumor control probability (TCP) in the patients of prostate cancer who underwent (131)Cs permanent seed implantation. The dose reduction, the SF, and the TCP for edematous prostate implants were calculated for 31 patients who underwent real-time (131)Cs permanent seed implanta...
متن کاملThe Role of radiobiological parameters on Tumor control probability (TCP) in prostate cancer
Introduction: The aim of this study was to evaluation radiobiological modeling parameters on tumor control probability (TCP) for prostate cancer in three different models. These parameters included α⁄β ratios and cell surviving fraction at 2 Gy (SF2). Materials and Methods: The Poisson, equivalent uniform dose (EUD) and linear quadratic (LQ) models was used as...
متن کاملIntraoperative dynamic dose optimization in permanent prostate implants.
PURPOSE With the advent of intraoperative optimized planning, the treatment of prostate cancer with permanent implants has reached an unprecedented level of dose conformity. However, because of well-documented (and unavoidable) inaccuracies in seed placement into the gland, carrying out a plan results in a large degree of variability relative to the intended dose distribution. This brings forth...
متن کاملcalculation of changes in radiation exposure due to prostate displacement in permanent prostate brachytherapy
background : limited studies are available on the calculation of radiation exposure and its associated risks for people in contact with patients who have been treated with permanent prostate brachytherapy. in this study the changes in the radiation exposure were calculated in different stages of the bladder fullness in prostate seed brachytherapy. methods :magnetic resonance images of three pat...
متن کاملPre-plan parameters predict post-implant D90 ≥ 140 Gy for 125I permanent prostate implants
PURPOSE To find permanent prostate implant (PPI) pre-plan dosimetric parameters that predict post-implant D90 ≥ 140 Gy. MATERIAL AND METHODS Pre-plans were evaluated for 504 patients undergoing PPI with (125)I seeds for low or intermediate risk prostate cancer. Baseline patient and disease factors, numbers of seeds, ratios of number of seeds to available positions (occupancy proportion), and ...
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ژورنال
عنوان ژورنال: Journal of Radiotherapy in Practice
سال: 2013
ISSN: 1460-3969,1467-1131
DOI: 10.1017/s146039691200009x