Effect of dose-volume constraints on pneumonitis in loco-regional breast cancer irradiation
| Autor: | G. Svane, Ulla Blom-Goldman, Berit Wennberg, M. Anderson, Pehr Lind |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Oncology
Cancer Research medicine.medical_specialty Radiation business.industry Isocenter Range of movement medicine.disease Video image Breast cancer Dimension (vector space) Internal medicine medicine Radiology Nuclear Medicine and imaging Irradiation business Dose volume constraints Nuclear medicine Pneumonitis |
| Zdroj: | International Journal of Radiation Oncology*Biology*Physics. 60:S401 |
| ISSN: | 0360-3016 |
| DOI: | 10.1016/j.ijrobp.2004.07.275 |
| Popis: | Overall, the number of treatment fractions in which repositioning of the isocenter was found to exceed 5 mm was 12/160, affecting 7/20 patients. Analysis of the video images revealed that inter-fraction variation in the position of the scar, after optimized isocenter positioning, revealed an additional potential for set-up uncertainty. The range of movement was 2–10 mm. Interestingly, variation was found in all 3 dimensions including the sup-inf dimension. Of the 16 patients for whom video was acquired, useful data were present in 11. The median variation in the in the med-lat dimension and sup-inf dimension was 3 mm. If the images of the surface reference points were plotted to determine the center of the array of positions for a single patient, the percentage of evaluable fractions with a single fraction deviation of greater than 5mm was small. |
| Databáze: | OpenAIRE |
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