| Parameter | 
        SIB | 
        SB | 
        P   Value | 
       
      
        | Ipsilateral    Lung | 
          | 
          | 
          | 
       
      
        | V20    Gy (%) | 
        19.81 | 
        22.79 | 
        0.04 | 
       
      
        | Mean    (Gy) | 
        12.91 | 
        13.26 | 
        0.02 | 
       
      
        | Heart  | 
          | 
          | 
          | 
       
      
        | V30    Gy (%) | 
        1.0 | 
        1.8 | 
        0.01 | 
       
      
        | V25    Gy (%) | 
        3.70 | 
        4.11 | 
        0.42 | 
       
      
        | Mean    (Gy) | 
        9.36 | 
        9.57 | 
        0.21 | 
       
      
        | Opposite    Lung | 
          | 
          | 
          | 
       
      
        | V    5 Gy (%) | 
        5.98 | 
        8.85 | 
        0.76 | 
       
      
        | Both    Lung | 
          | 
          | 
          | 
       
      
        | V20    Gy (%) | 
        10.8 | 
        11.4 | 
        0.32 | 
       
      
        | Mean    (Gy) | 
        7.35 | 
        7.7 | 
        0.06 | 
       
      
        | Contralateral  Breast | 
          | 
          | 
          | 
       
      
        | V5    Gy (%) | 
        0.84 | 
        3.69 | 
        0.06 | 
       
      
        | Mean    (Gy) | 
        0.36 | 
        1.27 | 
        0.01 | 
       
      
        | LAD | 
          | 
          | 
          | 
       
      
        | Maximum    Dose (Gy) | 
        17.59 | 
        21.61 | 
        0.01 | 
       
      |