Imaging for early stage breast cancer

Why difficult to compare interstitial BT to other techniques?

Differences in methods for performing implantations, free hand or template guided Differences in target definition, both defining target by delineation and implant volume, e.g. 1 cm or 2 cm expansion Differences in treatment planning process, e.g. use conventional orthogonal film dosimetry or CT planning with geometric optimization tools Dose to OAR is directly dependent on the localization of the lumpectomy cavity and the size of the breast