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This article is professionally consulted by Dr., Dr. Tran Nhu Tu - Dean and Master, Doctor Lam Thi Kim Chi - Department of Diagnostic Imaging - Vinmec Danang International HospitalThyroid ultrasound technique uses sound waves to create images of the thyroid gland. This technique does not use ionizing radiation and is often used to evaluate tumors that are discovered when a doctor feels the thyroid gland.
1. What is a thyroid ultrasound?
Ultrasound creates images of the inside of the body using sound waves. During the procedure, the doctor will apply gel directly to the skin and then, using a small, high-frequency transducer, apply pressure to the area to be ultrasound.
High-frequency sound waves are transmitted from the transducer through the gel into the body. The transducer collects the echoes. A computer is used to turn those sound waves into an image of organs in the body, including the thyroid gland. Because the images are captured in real time, the doctor can see the structure and movement of the organs in the body. In addition, the doctor also evaluates the perfusion of the thyroid parenchyma and thyroid lesions.
Ultrasound is a non-invasive imaging technique that helps doctors diagnose and treat the thyroid gland (thyroid ultrasound, aspiration thyroid cytology under ultrasound, high-frequency ablation of the thyroid nodule of the lower thyroid gland). supersonic).
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2. Benefits of thyroid ultrasound
Thyroid ultrasound creates images of the thyroid gland and nearby structures in the neck. The thyroid gland is located in front of and above the neck, just above the collarbone, and is shaped like a butterfly. The thyroid gland has two lobes on either side of the neck connected by a narrow band of tissue. It is one of nine endocrine glands located throughout the body that produce and secrete hormones into the bloodstream. The thyroid gland produces thyroid hormone, which helps regulate a variety of body functions such as regulating heart rate. About 5 to 10% of adults will have a tumor or nodule in their thyroid gland that a doctor can identify during a routine exam.
Ultrasound is very sensitive and detects many thyroid nodules that cannot be detected by palpation. In some age groups, thyroid nodules are seen on ultrasound in 70% of adults. Most of these are benign thyroid nodules that do not pose a health risk. However, some are true thyroid tumors and additional diagnostic techniques are needed for diagnosis or treatment. Ultrasonography can preliminarily evaluate the nature of thyroid tumors, hyperperfusion into thyroid tumors as well as evaluate the invasion of cervical lymph nodes.
3. When is a thyroid ultrasound needed?
Thyroid ultrasound is often used:
To determine if a lump in the neck is in the thyroid gland or nearby structures. To analyze whether the thyroid nodule is benign or not, it is necessary to perform cytology under ultrasound guidance. The doctor will aspirate cells with a needle under the guidance of ultrasound to help improve the accuracy of the exact lesion. To monitor and evaluate whether thyroid nodules change over time or not. Because ultrasound gives a real-time picture of the thyroid gland, doctors can use it to aid in other techniques such as needle biopsies. A biopsy uses a needle to take a tissue sample for testing. Ultrasound is used to assist the physician in placing a catheter or other drainage device in the correct position, safely, and accurately.
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4. What to prepare before thyroid ultrasound?
Patients should wear comfortable, loose-fitting clothes that easily expose the neck area.
Ultrasound examination is difficult when the patient is moving and especially children can be very hyperactive or cry leading to prolongation of the ultrasound process. To ensure a smooth ultrasound process, parents and doctors often have to explain the procedure to the child before it is performed. And parents should bring books, small toys, music or games that the child loves to help distract the child or help him stay still during the ultrasound.
Any questions that need to be answered by a specialist doctor as well as customers wishing to examine and test, biopsy at Vinmec International General Hospital, you can contact Vinmec Health System nationwide. or register online HERE.
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