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Medical Physics Tools
Clinical calculators for radiation dose — built on published standards. All computation happens in your browser; nothing is sent anywhere.
Effective Dose Calculator
ICRP Publication 102 · DLP × k(region, age)
Enter in mGy·cm. From DICOM RDSR or modality dose report.
25
Paediatric k-factors are higher; age interpolated from ICRP 102 Table A.1.
Apply SSDE Correction
AAPM Report 204 — size-specific dose estimate
Measure AP and Lateral at the scan mid-point. Effective diameter = √(AP × Lat). Leave blank to skip SSDE correction.
Standards used: K-factors — ICRP Publication 102 (2007) Table A.1. SSDE conversion factors — AAPM Report 204 (2011) Table B.1, 32cm body phantom / 16cm head phantom. DRL reference — EC Radiation Protection 185 (2014).
Enter DLP, region, and age.
Enable SSDE correction for patient-specific dose.
Shielding Layers
Use sliders to adjust thickness — visualization updates live
Layer 1
primary barrier
Layer 2
click + to add
Layer 3
click + to add
Method: T = (½)^(x/HVL) broad-beam attenuation. Inverse Square Law (dose ∝ 1/d²) applied to source–barrier distance. HVL data: NCRP 151, IAEA SRS 47. Limits: ICRP 103 (20 mSv/yr occupational, 1 mSv/yr public at 2000 h/yr). Reference only — formal assessments require a qualified MP/RSO.
Radiosh Mobile — Free on Google Play
Dosimetry simulator & radiation reference tool for medical physics on the go. ⭐ 4.8 · Used by students, educators and physicists worldwide.