title: New individual tissue compensators for high-energetic photons. Part I. Principle and procedure.
abstract: Part I. The inhomogeneity of absorbed dose caused by irregular body surface contour in the treatment port for external photon radiation is shown as a problem. The discussion of the physical fundamentals and technical possibilities of missing tissue compensators leads to a practical solution. A new handy procedure is presented allowing easy and rapid preparing of geometrically minified as well as absorption- and stray radiation corrected individual compensators. The achievable dose homogeneity within the target volume is shown as better than +/-5%. Systematical errors are investigated for the different parameters. In Part II systematical preclinical tests and first practical clinical experiences will be discussed.
mesh_terms: D000042:Absorption; D008433:Mathematics; D011867:Radioisotope Teletherapy; D011879:Radiotherapy Dosage; D012542:Scattering, Radiation; D013679:Technology, Radiologic