Welcome to the home page for the threshold database. This database was designed based on the work of Don Chamberlayne and was adapted for Microsoft Access by the IACA. You can download this article which explains the concept of threshold analysis. The Threshold Database is currently available for Microsoft Access 2000-2003.
Most patients can continue many of their normal activities during radiation therapy. Each radiation therapy treatment takes about 10 minutes. Radiation therapy to try and cure cancer is usually delivered daily, Monday through Friday, for about five to eight weeks. Weekend breaks allow normal cells to recover. Shorter durations of radiation therapy may be used to relieve symptoms.
Radiation therapy is carefully planned. Once the proper dose of radiation has been determined, it is usually divided into several small doses administered over several weeks to give the necessary dose of radiation to the cancer, sparing as much normal tissue as possible.