Required Radiation Dose Research Articles

The Co-Relation of Physical and Clinical Data in Radiation Therapy

THE more important problems of radiation therapy can be roughly summarized as follows: A. The estimation of the radiosensitivity (1 and 2) of a given lesion (by biopsy study). In terms of + − skin unit dose. B. The selection of the proper quality of radiation according to the location and depth of the lesion. By absorption curves, by the 10 cm. depth dose, or by the half value layer correlated to phantom measurements. C. Delivery to the lesion of the required radiation dose intensity. In r, or in fractions or multiples of the unit skin dose. D. The number of portals (by crossfire) to be selected (with skin tolerance the limiting factor) to build up the required depth dose. E. The choice of treatment method: a. Multi-unit single dose (destructive to superficial lesions). b. Sub-unit with recovery interval (applicable to the more radiosensitive lesions). c. Fractional cumulative (for all deeper seated and less radiosensitive lesions). To bring to realization the importance of the subject matter under consid...