Adrenal Washout Calculator
Calculate the adrenal washout percentage to help differentiate between benign and malignant adrenal masses based on CT attenuation values.
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How to use this tool?
- 1 Enter the requested data in the fields above carefully.
- 2 Click the calculate button to process the information instantly.
- 3 Analyze the detailed result and the formula explanation presented below.
- 4 You can print, share, or even embed the calculator on your own site for free.
Unlike traditional static calculators, our tools adapt to specific user needs. They include detailed explanations of the formulas used, ensuring transparency in results. Furthermore, our design is focused on user experience, eliminating distractions and focusing on what really matters: your data and conclusions.
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Frequently Asked Questions
Adrenal washout refers to the percentage decrease in CT attenuation (HU) of an adrenal mass from the post-contrast phase to the delayed phase. It helps differentiate benign adenomas (high washout) from malignant lesions (low washout).
Absolute washout > 60% or relative washout > 40% at 10-15 minutes suggests a benign adenoma. Lower values raise suspicion for malignancy.
If post-contrast equals pre-contrast, the absolute washout formula has a zero denominator. This may indicate a non-enhancing mass; clinical correlation is needed.
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