Nuclear Medicine & Radiation Therapy

Martin Lachaine

Publications

• Research Article
  A Comparison of Three Dimensional Ultrasound, Clips and CT for Measuring Interfractional Breast Lumpectomy Cavity Motion
  Author(s): Ruth Heimann, Daphne Hard, Jessica Archambault, Suzanne Gross and Martin LachaineRuth Heimann, Daphne Hard, Jessica Archambault, Suzanne Gross and Martin Lachaine
  
  Accurate definition of the lumpectomy cavity (LC) is essential for both partial breast and electron boost planning and delivery. The goal of this study is to evaluate CT, 3DUS and clips in the daily target localization of the LC. Twenty whole breast radiation patients, including 10 with clips, underwent two sets of treatment planning CTs (CT1, CT2) with co-registered 3DUS (US1, US2), separated by approximately 6 weeks. The cavities were independently outlined on each CT and 3DUS dataset. Of the 20 patients, 18 had visible cavities. The shifts in cavity position were calculated from CT, 3DUS and clips. The PTV margins required to be added to the CT1 cavity volume in order to fully encompass the CT2 cavity were calculated without and with shifts according to 3DUS or clips. The median cavity displacement ranged from 0.0-3.0 mm with a maximum of up to 17.9 mm. The cavity displacements wer.. Read More»
  DOI: 10.4172/2155-9619.1000280

  Abstract PDF