Brachytherapy may be used for superficial lesions especially for uneven treatment sites of those site which are otherwise difficult to target with external beam electron therapy. Further, Ir-192 brachytherapy may be preferable to electron therapy for skin lesions because of improved superficial skin dose (145% is typical) a high degree of dose conformality.
The Freigurg flap is a skin applicator consisting of plastic catheters threaded through a series of 1cm silicone spheres. There spheres position the catheters 0.5cm above the skin surface aiding in dose uniformity. Rows of catheters are attached together forming the flap. A flap of this design allows treatment of a large area with the flexibility to conform to the skin surface.
Not a Premium Member?
Sign up today to get access to hundreds of ABR style practice questions.