The LQ Model app allows professionals in the field of radiotherapy, oncology, medical physics and radiation biology to calculate the biological effects of differently fractioned radiation doses. Using live calculation, the app allows to estimate the influence of every parameter very easily. It will save you the time and energy needed to calculate the formula for the Linear Quadratic Model by hand! Main features: * Calculation of Total dose, Biodose and Bio-isodose * Easy data-input via sliders * Database of organs, complete with a/b values * Links and Literature for reference to the Linear Quadratic Model The LQ App is not intended as a clinical tool and may only be used for scientific purposes.