I am pleased to announce the release of the Nuclear Medicine Toolkit, a free, open-access, browser-based clinical calculator suite developed for nuclear medicine departments.

WHAT'S INCLUDED

1) Dose Preparation

• Syringe pre-calibration — calculates the activity to draw at preparation time to deliver a precise prescribed dose at injection (A_syringe = A_desired × e^+λΔt)

• Decay from calibration certificate — residual activity at any target date & time

• Volume & dilution calculator

• Decay curve with real clock-time axis and administration marker

2) Patient Dosimetry

• Weight-based activity prescription with configurable cap

• Pediatric dosing — EANM dosage card method

• Effective half-life (physical + biological components)

• Residual activity in patient & time to discharge threshold

3) Radiation Protection

• Point-source dose rate — inverse square law (H = Γ·A/d²)

• Shielding calculator — thickness in lead and concrete (HVL/TVL)

• Time to reach regulatory release threshold

• Breastfeeding interruption guidance (IAEA / EANM)

4) PET Quantification

• SUV normalised to body weight, lean body mass (Janmahasatian), and BSA (Du Bois)

• Dead time correction — paralysable & non-paralysable detector models

• Radiochemical purity QC with pass/fail threshold

5) Reference Tables

• Decay and pre-calibration correction factors

• Half-life comparison chart

• Physical data (T½, Γ constant, HVL) for 12 radionuclides:

¹⁸F · ⁹⁹ᵐTc · ¹²³I · ¹³¹I · ⁶⁷Ga · ¹¹¹In · ²⁰¹Tl · ⁶⁸Ga · ⁸²Rb · ⁸⁹Sr · ¹⁷⁷Lu · ²²³Ra

⚠ DISCLAIMER

This is experimental software provided for educational and professional reference purposes only. Results may contain errors. Always verify every calculation independently before clinical use. The authors accept no liability for any consequences arising from its use.