Use of radiochromic film in electron beam radiation therapy

Electron beams have found various clinical applications including treatment of superficial diseases. The limited penetration depth of high-energy electrons enables uniform coverage of shallow targets while simultaneously sparing normal tissues underlying the treatment site. Although electron beams have many promising applications, accurate dosimetry can be challenging primarily due to steep dose gradients near a patient’s surface. Radiochromic film has proven to be highly valuable in electron-beam dosimetry for characterizing dose distributions largely due to its ability to provide high spatial resolution among other characteristics.