ABSTRACT
An essential issue is an accurate evaluation of surface dose distribution for such sensitive treatments. This work aimed to feasibility of the dual application of the Ferrous Polyvinyl Alcohol Glutaraldehyde Methylthymol Blue (PVA-GTA-MTB) gel as a bolus compensator and surface dosimeter in breast radiotherapy. The differences between the surface dose measured using PVA-GTA-MTB gel and film dosimetry in the medial and lateral parts of the breast were 3.74% and 4.18%, respectively. A qualitative comparison of the isodose curves showed that the PVA-GTA-MTB bolus creates a uniform dose distribution similar to the superflab bolus in the target volume.
Subject(s)
Polyvinyl Alcohol , Radiometry , Radiometry/methods , Glutaral , Radiation Dosimeters , Hydrogels , Radiotherapy Planning, Computer-Assisted/methods , Radiotherapy Dosage , Phantoms, ImagingABSTRACT
Bactrocera oleae is one of the most hazardous pests threatening olive orchards in Iran. SIT is an environment-friendly system of pest control based on releasing sterile males able to compete with wild males to mate with wild females. To determine sterile doses of radiation, pupae were irradiated to the doses of 0-160â¯Gy. Doses of 90-100â¯Gy were found optimal providing the necessary sterilization without severely impairing the competitiveness of the irradiated males in mating.