الفهرس 
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Abstract
The present study included 30 female patients having operable breast cancer. In this study, the median age was 49 years age, 87% underwent MRM and all of them received adjuvant systemic therapy.
Three dimensions planning (3D) and analysis of different target dosimetric data had done.
The mean value of mean target doses is 4289 cGy. The mean value of maximum doses was 5569 cGy.
Mean volume of the target that received more than 110% of dose was 2.5%, while the mean volume of the target that received more than 105% of dose was 15.5%.
About 12.6% of target volume received less than 95% of the prescribed dose.
The mean value of dose homogeneity index (DHI) was 60.8%.
The total irradiated volume of ipsilateral lung was 20% Supraclavicular field irradiated half of it.
Mean dose of the ipsilateral lung was 1086 cGy. The mean value of CLD of the ipsilateral lung was 1.97 cm NTCP of the ipsilateral lung was 2.05.
As regard heart dosimetry, left sided cases; the maximum dose was 4950 cGy; the mean dose was 150cGy.The mean heart volume included by 50% isodose line was 0.9%.
Conclusion
from our results we can concluded that 3D planning of the breast provide good dosimetric target coverage with good sparing of normal tissue especially lung and heart.