How to do thyroid ultrasound

B-ultrasound is a common examination method. It can be used to check many gynecological diseases. Our thyroid gland can also be checked through B-ultrasound. However, B-ultrasound has certain requirements when checking the thyroid gland, and its operation method also has certain requirements. Many people don’t know, so how to do thyroid B-ultrasound?

It is currently believed that the best way to detect thyroid nodules is thyroid B-ultrasound. It is convenient and has no adverse effects such as radiation. You can see both the shape and the blood flow. Other examinations such as CT/MRI are only selected when the relationship between the tumor and its surroundings is unclear.

What does B-ultrasound of thyroid nodules mainly look at?

1. Are the boundaries clear? Benign nodules generally have clear boundaries, while malignant nodules may have unclear boundaries because they invade surrounding tissues. However, some inflammatory lesions may have exudation and unclear boundaries.

2. Whether the shape is regular. Benign lesions generally have regular shapes, and some have halos around them.

3. Is there a dot-shaped strong echo? It can be seen in two situations: one is colloid, which is a benign sign. One is calcification. Malignant tumors generally have calcifications, and most of them are microcalcifications or gravel-like calcifications; but calcifications are not necessarily malignant.

4. Is there blood flow inside the tumor or nodule? Blood flow is divided into internal blood flow and external blood flow. Malignant tumors often have internal blood flow disorders. Because the thyroid gland is an organ with abundant blood flow, the blood flow to the gland is generally abundant. If it is hyperthyroidism, the blood flow will be richer and flame-shaped.

5. Whether the nodule grows vertically. That is, whether the longitudinal diameter of the thyroid nodule is larger than the transverse diameter, that is, whether the aspect ratio is greater than 1. If so, the possibility of malignancy also needs to be considered.

6. Whether there is lymph node or surrounding infiltration. Whether the nodule is adhered to the surrounding tissue and whether the cortical-medullary boundary of the lymph node is unclear. If there is distant metastasis, it is definitely malignant. Of course, tumors are now discovered relatively early and distant metastasis is rare.

However, not every nodule will have the above-mentioned ultrasound manifestations, which requires specific analysis. In short, the more manifestations there are, the greater the possibility of malignancy. Of course, the doctor's experience and the resolution of the machine have a great influence on the judgment of the ultrasound results. I generally trust the ultrasounds done by doctors in our hospital, and I would recommend rechecking some suspicious examinations from other hospitals.