Optical computed tomography in PRESAGE® three-dimensional dosimetry: Challenges and prospective

With the advent of new complex but precise radiotherapy techniques, the demands for an accurate, feasible three-dimensional (3D) dosimetrysystem have been increased. A 3D dosimetersystem generally should not only have accurate and precise results but should also feasible, inexpensive, and time consuming. Recently, one of the new candidates for 3D dosimetryis optical computedtomography (CT) with a radiochromic dosimetersuch as PRESAGE ® . Several generations of optical CT have been developed since the 90s. At the same time, a large attempt has been also done to introduce the robust dosimetersthat compatible with optical CT scanners. In 2004, PRESAGE ® dosimeteras a new radiochromic solid plastic dosimeterswas introduced. In this decade, a large number of efforts have been carried out to enhance optical scanning methods. This article attempts to review and reflect on the results of these investigations.