Radiology calculators

Free calculators for radiologists and residents, grouped by area.

Body CT

Adrenal Washout CalculatorWashWizardAbsolute and relative washout from CT attenuation to help differentiate adrenal adenomas from other adrenal lesions.

Chest CT

Lung Nodule Volume Doubling Time CalculatorGrowTimeLung nodule volume doubling time from two or more CT scans, by measured volume or diameter.

Organ volumes

Prostate Volume & PSA Density CalculatorEllipsoid prostate volume with optional PSA density.
Ovarian Volume CalculatorOvarian volume from three dimensions, with Pavlik’s published limits and a conditional PCOM volume assessment for eligible inputs.
Uterus Volume CalculatorUterine volume from three measurements, with optional comparison to Kelsey 2016 age-reference centiles.
Ellipsoid Organ Volume CalculatorVoluMetricsGeometric volume estimates from three diameters, with organ presets and selectable prostate and testis formulas.

Musculoskeletal

Rotator Cuff Healing Index (RoHI) CalculatorCuff IQRotator Cuff Healing Index (Kwon 2019): score six factors and see observed healing failure in the derivation cohort.