Brachytherapy and GYN malignancy. Brachytherapy. Brachytherapy ( brachy , from the Greek for “short distance”) consists of placing sealed radioactive sources close to or contact with the target tissue. Interstitial, intracavity, or transluminal approach. Temporary, or permanent implant.
LDR sources: 0.4-2 Gy/hr (137Cs)
HDR sources: ≥ 12 Gy/hr (60Co, 192Ir)
Reference point from which lymph node position were measured on lymphoangiograms and the range of locationInt. J Radiat Oncol Biol Phys 34:167-172, 1996
Tumor size <=4 cm
Local advanced tumor
Brachytherapy in definitive radiotherapy of cervical cancer(Intracavity radiotherapy, ICRT)