☢️ Radiology

⏱️ALARA: Time, Distance & Shielding Calculator Calculate the radiation dose you receive from a source given dose rate, distance, time and shielding, free online. 🩻Contrast Volume Calculator Estimate contrast agent volume from patient weight and iodine dose, free online. ✈️Cosmic Radiation on Flights Calculator Estimate the radiation dose from air travel by flight hours and route type and compare it with chest X-rays and background radiation, free online. 🏥CT Effective Dose Calculator Estimate effective radiation dose from a CT scan's dose-length product, free online. 📉Decay Constant Calculator Calculate the decay constant of a radioactive isotope from its half-life, free online. ☢️Dose Unit Converter Calculator Convert radiation dose between gray, rad, sievert and rem, free online. 📟Equivalent & Effective Dose Calculator Convert absorbed dose in grays to equivalent dose in sieverts using radiation weighting, and to effective dose using an organ weighting factor, free online. ☢️Half-Life / Radioactive Decay Calculator Calculate the remaining quantity of a radioactive substance after a given time, free online. 🛡️HVL / TVL Shielding Attenuation Calculator Calculate the transmission through shielding from its half-value layer, or the thickness needed for a given reduction, free online. 📡Inverse Square Law (Radiation) Calculator Calculate how radiation dose rate falls off with distance, free online. 🧪Mo-99/Tc-99m Generator Yield Calculator Predict the Tc-99m activity available from a molybdenum-99 generator at any time after the last elution, free online. 🧠PET Standardised Uptake Value (SUV) Calculator Calculate the SUV for a PET scan from injected activity, patient weight and tissue concentration, with decay correction, free online. 🩻Radiation Dose Calculator Calculate total radiation dose from dose rate and exposure time, free online. 🍌Radiation Dose Comparison Calculator Put a radiation dose in context with everyday equivalents, free online. 🛡️Radiation Shielding (Half-Value Layer) Calculator Calculate radiation intensity after passing through a shield using half-value layer thickness, free online. 🔄Radioactivity Unit Converter (Bq ↔ Ci) Convert radioactivity between becquerels and curies, free online. ☢️Radioisotope Decay Calculator (Tc-99m, F-18…) Calculator Calculate the remaining activity of a medical or lab radioisotope after a time, with the decay-correction factor, free online. 🏠Radon Exposure & Dose Calculator Estimate the annual effective dose from indoor radon based on concentration, occupancy and equilibrium factor, free online. 🩻X-Ray Technique (mAs, kVp & Distance) Calculator Adjust X-ray mAs for a change in distance or kVp using the inverse square law and the 15% rule, free online.