Thyroid volume calculator

Note: this calculator can be used for any cross-sectional imaging modality. Bear in mind that the estimated volume does not include the thyroid isthmus.

Notes

• This calculator uses the following formula:
  • Volume = length x width x depth x correction factor.
• The originally proposed correction factor was 0.479, and this has been adopted widely since then, including the WHO.
  • ^{Brunn J, Block U, Ruf G, Bos I, Kunze WP, Scriba PC. Volumetrie der Schilddrüsenlappen mittels Real-time-Sonographie [Volumetric analysis of thyroid lobes by real-time ultrasound (author’s transl)]. Dtsch Med Wochenschr. 1981 Oct 9;106(41):1338-40. German. doi: 10.1055/s-2008-1070506. PMID: 7274082.}
• Based on CT measurements other authors have proposed a modified correction factor of 0.529.
  • ^{Shabana W, Peeters E, De Maeseneer M. Measuring thyroid gland volume: should we change the correction factor? AJR Am J Roentgenol. 2006 Jan;186(1):234-6. doi: 10.2214/AJR.04.0816. PMID: 16357408.}

Last updated: 2021-09-24