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Summary for Breast Brachytherapy
•
The experts agree that in using TG43 for
192
Ir procedures:
➢
If you are using high levels of contrast – your overall dose is
decreased
➢
Skin dose is over-estimated (~ 4-10%)
➢
Dose to ribs is under-estimated (~ 5 -7%)
➢
Dose coverage is probably slightly over-estimated
•
If you use seeds or electronic brachytherapy sources
➢
Very large effect due to breast composition (adipose and
glandular tissues)
➢
Very large effect from bones (ribs)