How to plan prostate irradiation with template of CFIMRT 6 ports by XiO
At first, draw each contours.
This is the template for prostate ( 6 ports )
Port 1: 260deg. Fixed port
Set each Parameters.
The MLC shape is fitted to PTV. (Leaf margin is 5mm.)
Jaw opening is adjusted to MLC shape.
'Field Cut' is done at the anterior edge of rectal shape.
( When warning as shown in the above figure appears, MLC should be opend a little, or a dose indication point sould be chosen another point.)
Port 2: 260deg. Fixed port
260 deg. fixed port is also set up in the same way.
Port 3: 230deg. Fixed port
You need not 'field cut' at this port.
Port 4: 140deg. Fixed port
Port 5: rectangular rotational port
Adjust Jaw width and length
The width is just edge of PTV for all directions. The lenght is PTV + 1 cm.
Port 6: 0deg. Fixed port ( 90 deg collimator rotation)
Field cut cranial direction.
Finally, you should check biological parameters.
last modification date: 2006/04/03