Nuclear Medicine

Regression of points to straight line, correlation coefficient

Finding of natural divisors

The highest common divisor

Quadratic equation

Time difference

Estimation of some human biometric parameters

Concentration conversion

Simple radioactive decay (1 radioactive nuclide: A → B)

Successive radioactive decay (2 radioactive nuclides: A → B → C)

Successive radioactive decay (3 radioactive nuclides: A → B → C → D)

Conversion of activity units (traditional into SI-derived and vice versa)

Conversion of mass into activity and vice versa (mass-units into activity-units and vice versa)

(1.) Calculation of thyroid volumen on the basis of the lobes diameters

(2.) Calculation of (radio)nuclide uptake (f.e. uptake of radioiodine in the thyroid)

(2a.) Calculation of uptake of I-131 in the thyroid (This program can be saved as a file and launched in another PC, a browser with HTML and

(3.) Calculation of radioiodine dose (simplified)

(4.) Kinetic modeling I. (effective half-time, maximal uptake and others, based on a series of measures) - for radionuclide therapy

(5.) Kinetic modeling II. (effective half-time, maximal uptake and others, based on three measures) - for radionuclide therapy

(6.) Calculation of dose of radioiodine or another radionuclide for treatment (modified Marinelli-formula)

(7.) Dosimetry of α- and β-radiation

(8.) Dose rate and absorbed dose of γ radiation (in a distance from a point source)

Here, you can calculate the dosis of short-range radiation (mainly α and β), delivered to the tissue, which takes up

You must enter the following data (and choose the appropriate units):

- T_{(1/2)ef} - effective half-time of the nuclide in the target tissue; the time cannot be longer than the physical half-time (T_{(1/2)phys}), and is typically shorter, because, except for physical decay, also chemically/pharmacologically related biological elimination takes place; units: optionally from seconds to years;

- E - decay energy; you should write **the mean** (pro one disintegration) energy given by the atom by means of radiation of **short** range (i.e. α- and β-radiation, not γ); you should remember that the mean β-particle energy equals *end-point energy*); in a case of a non-uniform radiation spectrum, you should write the "weighted mean" of the energy; units: optionally from eV till MeV;

- m - target mass [grams];

- A_{0} - activity of the nuclide at the beginning; units: optionally from Bq till GBq;

- U - uptake [%] of the nuclide in the target tissue (default: 100);

- C_{f} - correction factor for the number of decays ("cumulated activity"; default: 1)

©Author: Cyprian Świętaszczyk, 2013;