Method for calculating dose when lung tissue lies in the treatment field.
The absorbed dose in lung and beyond lung as a result of increased lung transmission of x and gamma irradiation is described. The correction factor used to calculate the absorbed dose is a function of beam energy, field area, lung density, and lung and soft tissue depth. Agreement between measurements and calculations in the Alderson phantom is within 3%. An example of how this technique can be used is described.
D003037:Cobalt Radioisotopes / Q000627:therapeutic use; D006801:Humans; D008168:Lung; D008479:Mediastinal Neoplasms / Q000532:radiotherapy; D011867:Radioisotope Teletherapy; D011879:Radiotherapy Dosage; D013899:Thoracic Neoplasms / Q000532:radiotherapy*; D014964:X-Ray Therapy
D003037:Cobalt Radioisotopes