CPB Ljubljana 2018 course book

The given dose is 25 x 1.8 Gy EBRT and 2 brachytherapy applications of total 4 x 7 Gy.

1. Place the points A in the right position related to the Fletcher applicator.

ICRU 89, points A (ICRU-report 89. Journal of the ICRU Volume 13, 2016

. For tandem and ovoids, connect a line through the center of each ovoid. From the point on the tandem where this line intersects, extend superiorly along the tandem a distance equal to the radius of the ovoids (see Figure a). For the tandem and ring applicator, from the inter- section of the plane of the center of the ring source channel and the tandem (see Figure b) move superiorly the distance from the center of the source channel to the superior surface of the ring. For tandem and cylinders (see Figure c) or tandem and mould (see Figure d), begin at the superior intersection of the vaginal applicator and the tandem. From the point found above, move 2 cm further superiorly along the tandem. Define Point A on each side as 2 cm laterally on a line perpendicular with respect to the tandem from this final point on the tandem. The transverse-point A plane is a plane perpendicular to the tandem containing point A.