Introduction
This Excel spreadsheet helps calculate shielding requirements for more than 20 radioisotopes, with options for narrow beam, broad beam, and buildup factors.
It is designed for nuclear medicine, radiopharmacy, and radiation safety professionals.
Features
Supports PET, SPECT, gamma and sealed source isotopes
Includes buildup factors
Accepts customized thickness and distance
Instant results
Clean layout and easy to use
Instructions
1. Select isotope
2. Enter initial activity
3. Enter distance and thickness
4. Choose buildup / non-buildup
5. Results update automatically
Disclaimer
This tool is provided for educational and reference purposes only. It does not replace professional judgment, site-specific design, or regulatory review. Users are responsible for verifying all inputs and results and for ensuring compliance with applicable institutional and regulatory requirements.
Please refer to the Disclaimer page before downloading or using the spreadsheets or tools
Nuclear Medicine Tools & Calculators 