Free Radiology Calculators for Rapid Clinical Decisions
Free clinical calculators for radiologists and rad techs to support imaging measurements and clinical decisions.
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WashWizard
Adrenal Washout Calculator
U=20, E=100, D=42.4 HU
Absolute Washout
72.0%
≥60%: adenoma range
Relative Washout
58%
Informational — not used when unenhanced is available
Interpretation
Imaging favours adenomaImaging favours adenoma (absolute washout ≥60%); hormonal work-up per ESE 2023 is still recommended (dexamethasone suppression test, metanephrines).
Clinical: Washout thresholds misclassified about a third of lesions >10 HU unenhanced in one single-centre study (Schloetelburg 2021, Eur J Endocrinol 2022;186(2):183-193; n=142).
GrowTime
Pulmonary Nodule Doubling Time Calculator
Nodule Growth Over Time
Nodule 2: VDT 144.6 days (<400 d band in NELSON). Demo diameters: 6 → 8 mm over 180 days.
Cuff IQ
Rotator Cuff Healing Index (RoHI) Calculator
Score 9 — 38% observed healing for scores 7–9 (Kwon 2019 Table 4)
Featured Tools
Try our specialized calculators designed to enhance your diagnostic process
VoluMetrics
Radiology Volume Calculator
Calculate volumes of various 3D shapes for anatomical structures and lesions in medical imaging.
WashWizard
Adrenal Washout Calculator
Calculate adrenal washout percentages to differentiate adrenal lesions on CT scans.
GrowTime
Pulmonary Nodule Doubling Time Calculator
Calculate doubling time for pulmonary nodules to assess growth rate and malignancy risk.
Cuff IQ
Rotator Cuff Healing Index (RoHI) Calculator
Rotator Cuff Healing Index (Kwon 2019): score six preoperative factors and see the published healing-failure rate for the score group.
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