Imaging for early stage breast cancer

• The NSABP/RTOG guidelines can be fulfilled by any external APBI techniques

• With IMRT the dose to organs at risk can be reduced compared to the 3D-CRT

• IMRT has more advantages in patients with more challenging anatomy

• CyberKnife is a suitable techinque for delivering APBI with achievable normal tissue

constraints

• Lung and heart can be better spared in prone position

• The lowest dose to organs at risk can be achieved with proton beam irradiation