Ultrasound Measurements of Fetal Thyroid: Reference Ranges from a Cohort of Low-Risk Pregnant Women

Figure 1

Ultrasound scan showing measurements of fetal thyroid lobe diameters in a 31-week gestation. (a) Transverse cut of the neck showing the thyroid lobes (t) around the trachea (tr) and in front of the carotid arteries (c). (b) Transverse diameters of both lobes of the fetal thyroid. (c) Longitudinal and anteroposterior diameters of the fetal thyroid lobe in the sagittal plane.

(a)

(b)

(c)