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甲狀腺體積計算機 (Thyroid Volume Calculator)

Ellipsoid Method: Volume of one lobe = 0.523 × Width × Depth × Length
Brunn Method(WHO): Volume of one lobe = 0.479 × Width × Depth × Length
Ellipsoid(Heywood): Volume of one lobe = (π/6) × R × R × Length = (2/3) × S × Length
* 0.523 ≈ π/6, R(cm) = 2 × √(S/π), S(cm²) = Area of th Thyroid ROI
※ 一般來說,Ellipsoid Method在臨床實踐中最常使用。

*Width : 甲狀腺葉的左右寬度 (Transverse plane)
*Depth : 甲狀腺葉的前後厚度[A-P] (Transverse or Longitudinal plane)
*Length : 甲狀腺葉的縱向長度 (Longitudinal plane)

(1) Rt. Thyroid Lobe





(2) Lt. Thyroid Lobe




*如果有ROI和Length值,也會計算Ellipsoid(Heywood) Volume。




※ 正常成人甲狀腺體積:約15~20mL

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Ozturk, Mehmet & Durmaz, Mehmet & Ateş, Fatih & Kara, Turgay & Durmaz, Funda & Akyürek, Nesibe. (2020). Assessment of thyroid gland vascularity with superb microvascular imaging in healthy children and its relationship with potential factors. Journal of Pediatric Endocrinology and Metabolism. -1. 10.1515/jpem-2020-0224.
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J Appl Clin Med Phys 2021; 22:4:15–25