Adrenal Washout Calculator
Calculate washout percentages for adrenal imaging studies
Note: Adrenal washout calculations help differentiate between adenomas and other adrenal lesions.
Clinical judgment should always be used in conjunction with imaging findings and patient assessment.
Absolute Washout (%)
-
Relative Washout (%)
-
Interpretation
-
Diagnostic Category
-
Washout Criteria
Absolute Washout: ≥ 60% suggests adenoma
Relative Washout: ≥ 40% suggests adenoma
Unenhanced: ≤ 10 HU strongly suggests adenoma
Formulas:
Absolute = [(Enhanced - Delayed) / (Enhanced - Unenhanced)] × 100
Relative = [(Enhanced - Delayed) / Enhanced] × 100
Relative Washout: ≥ 40% suggests adenoma
Unenhanced: ≤ 10 HU strongly suggests adenoma
Formulas:
Absolute = [(Enhanced - Delayed) / (Enhanced - Unenhanced)] × 100
Relative = [(Enhanced - Delayed) / Enhanced] × 100
Clinical Recommendations
Enter CT values and click calculate to see recommendations.
Important: This calculator provides interpretation assistance only.
Clinical decisions should be based on comprehensive imaging evaluation, including
lesion size, morphology, and clinical context. Always correlate with patient
symptoms and other imaging findings.