Concave shape irradiation for prostate

In generally, to make plan of concave dose distribution is usually considered to be difficult. But we can plan such dose distribution using conventional irradiation method with forward planning..

prescribed dose 70Gy (V70>=95%)

9 ports irradiation

 

Methodology of adjusting Jaw

If collimator is rotated, and Jaw adjusted, its field will be resembled that of using MLC. Please show every image slices, and adjust it.

Adjust jaw rotaion

Adjust left jaw

Adjust lower jaw

 

  last modification date: 2007/06/01