Fig. 1From: Dosimetric and radiobiological comparison of simultaneous integrated boost radiotherapy for early stage right side breast cancer between three techniques: IMRT, hybrid IMRT and hybrid VMATTarget volume contouring and field arragement display of three irradiation techniques: a IMRT, b Hybrid IMRT (H-IMRT) and c Hybrid VMAT (H-VMAT). The yellow straight lines, red straight lines, and yellow arc represent IMRT beams, tangential beams and partial arc beam, respectively. The green area is the planning target volume (PTV), and the light blue area is simultaneous integrated boost (SIB)Back to article page