Gynae BT 2017

Is density correction important?

Anatomic site

Source energy

High (e.g. 192 Ir, 137 Cs)

GYN

No*

High (e.g. 192 Ir)

Prostate

No

Low (e.g. 125 I)

Yes

* If shielded applicators are used, density correction is important!

MR-based treatment planning will work well for GYN with 192 Ir or 137 Cs sources, since density correction is not important