Internal dosimetry involves multiple steps: 1. Radiopharmaceutical Administration: A radiopharmaceutical is administered to the patient, typically via intravenous injection. 2. Imaging and Data Collection: Imaging techniques such as SPECT (Single Photon Emission Computed Tomography) or PET (Positron Emission Tomography) are used to visualize the distribution of the radioactive substance within the body. 3. Quantitative Analysis: The images are analyzed to quantify the concentration of radioactivity in different tissues and organs. 4. Dose Calculation: Mathematical models and software tools are employed to calculate the absorbed dose based on the collected data.
