Journal of Electrical & Electronic Systems

Ranatunga IP

Publications

• Research Article
  Mammosite Brachytherapy Dosimetry-Effect of Contrast and Air Interface on Skin Dose
  Author(s): Foster A, Ranatunga IP and Wijesinghe RSFoster A, Ranatunga IP and Wijesinghe RS
  
  High-dose-rate (HDR) brachytherapy is an effective internal radiation therapy procedure for treating malignant neoplasms. This technique is widely used in breast cancer treatments to destroy residual cancer cells surrounding the lumpectomy cavity following surgery. This is done by inserting a balloon catheter into the cavity that is inflated with saline as well as a medium of radiographic contrast. Then the radioactive isotope is positioned into the center of the balloon using an HDR unit to deliver the prescribed dose to a volume surrounding the balloon. Most of the currently available treatment planning systems (TPS) for brachytherapy, including Nucletron Oncentra, estimate dose using proprietary algorithms which use a pre-calculated dose metric derived from Ir-192 placed in a water phantom. However, they do not take into account variations in attenuation due to inhomogeneities in d.. Read More»
  DOI: 10.4172/2332-0796.1000180

  Abstract PDF