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- W2118359485 abstract "Purpose: To assess the influence of setup errors and organ motion in terms of the probability of tumor control and normal-tissue complications by tumor control probability and normal-tissue complication probability. Methods and Materials: Twelve patients were treated for prostate cancer with intensity-modulated radiation therapy. Two orthogonal portal images were taken daily. All patients underwent three computed tomography scans during the 8-week treatment time (i.e., baseline, intermediate, and final). The original treatment plans were re-evaluated, taking into account setup errors and organ motion. Results: The mean shifts ± standard deviation of the whole patient population in the lateral, anterior-posterior, and craniocaudal direction were 1.0 ± 1.5 mm, 0.9 ± 2.1 mm, and 1.9 ± 2.1 mm, respectively. In most of the recalculated dose–volume histograms, the coverage of clinical target volume was granted despite organ motion, whereas the rectal wall histograms were often very different from the planned ones. Conclusion: We have studied the impact of prostate and rectum motion, as well as setup errors, on dose–volume histograms. The estimate of these effects may have implications for predictive indications when planning intensity-modulated radiation therapy treatments on prostate. Purpose: To assess the influence of setup errors and organ motion in terms of the probability of tumor control and normal-tissue complications by tumor control probability and normal-tissue complication probability. Methods and Materials: Twelve patients were treated for prostate cancer with intensity-modulated radiation therapy. Two orthogonal portal images were taken daily. All patients underwent three computed tomography scans during the 8-week treatment time (i.e., baseline, intermediate, and final). The original treatment plans were re-evaluated, taking into account setup errors and organ motion. Results: The mean shifts ± standard deviation of the whole patient population in the lateral, anterior-posterior, and craniocaudal direction were 1.0 ± 1.5 mm, 0.9 ± 2.1 mm, and 1.9 ± 2.1 mm, respectively. In most of the recalculated dose–volume histograms, the coverage of clinical target volume was granted despite organ motion, whereas the rectal wall histograms were often very different from the planned ones. Conclusion: We have studied the impact of prostate and rectum motion, as well as setup errors, on dose–volume histograms. The estimate of these effects may have implications for predictive indications when planning intensity-modulated radiation therapy treatments on prostate." @default.
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- W2118359485 date "2006-06-01" @default.
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- W2118359485 title "A study of the effect of setup errors and organ motion on prostate cancer treatment with IMRT" @default.
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- W2118359485 doi "https://doi.org/10.1016/j.ijrobp.2006.01.021" @default.
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