Breast for treatment planning

Question 1

Localisation procedure: Central axis aligned at back border

starting off

Answer 1

-add new course and new plan

-add DRR (RC field)

-change col to 90

Question 2

locate your isocentre. The isocentre should be in the centre of the breast, that is

Answer 2

a)midway between the skin surface and the underlying chest wall
b)midway between the medial and later borders of the tangent fields.
c)Midway between the sup and inf extent of the breast tissue.

Question 3

measure

Answer 3

2cm post from lateral wire

represents posterior border of the lateral tangent field