Endocrinology

Thyroid Ultrasound Volume & Goiter Staging Calculator

Calculates bilateral thyroid lobe volumes (mL/cm³) using the Brunn ellipsoid formula and stages goiter severity.

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Parameters

Thyroid Ultrasound Volume & Goiter Staging Calculator Result

Formula

Lobe Volume (mL) = Length (cm) × Width (cm) × Depth (cm) × 0.479 (Brunn formula)
Total Volume = Right Lobe Volume + Left Lobe Volume (Normal: ≤ 18 mL females, ≤ 25 mL males)

Clinical Pearls

Standardizes ultrasound reporting of goiter progression, monitors response to levothyroxine suppressive therapy or radioiodine, and identifies candidates for surgical decompression.

Limitations

Calculations assume normal ellipsoid geometry; asymmetric nodules or deep mediastinal plunging lobes require CT cross-sectional volumetric reconstruction.