3D Printed Boluses Usage In Radiotherapy

Abstract

Build-up material (bolus) appliance in radiotherapy gives the possibility to use bolus as an additional body for uneven and concaved surfaces, improving treatment procedure’s outcome. Even if flexible silicone bolus is used the air gaps between bolus and patient’s body are present. This has impact on the homogeneity and conformity of the dose distribution and respectively diminished absorbed dose to the patient’s surface, e.g. skin. Using 3D printing techniques, it is possible to create individualized boluses, eliminating the impact of the air gaps, so assuring an accuracy of the treatment procedure. In this work we introduce 3D printed patient related individualized bolus and the results on phantom surface dose measurements performed using the bolus.