Abstract
Background: Currently, there are no studies providing data on normal thyroid anatomy images on ultrasound to document thyroid imaging for doctors in the country in general and in the Mekong River Delta in particular. Therefore, it is necessary to determine the size of a normal adult human thyroid gland by ultrasound and contribute to providing reference data for the training of clinicians, especially determining the dose of drugs to treat some thyroid diseases related to the size of the gland. Objectives: To determine the thyroid anatomical imaging features in people without thyroid disease on ultrasound. Materials and method: A cross-sectional descriptive study was conducted on 172 patients who visited the Can Tho University of Medicine and Pharmacy Hospital from May 2021 to October 2022. Subjects are selected by the convenient sampling method met the selection and exclusion criteria. Results: The average size of the right lobe (height x width x thickness) was 45.59 x 16.67 x 14.03mm and the left lobe was 43.04 x 16.08 x 12.08mm. The mean thyroid isthmus thickness was 2.62 mm. The mean thyroid volume of the right and left lobes in the study subjects was 5.24ml and 4.31ml, respectively. Conclusions: In general, the size of the right lobe of the thyroid gland is larger than that of the left lobe (p<0.001), and the thickness of the right lobe of the thyroid gland is larger in men than in women (p=0.04). No statistically significant differences were found between thyroid size and factors such as age, sex, ethnicity, and BMI.
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