Related Experiment Video
Updated: Aug 23, 2026
Synchronous Triplanar Reconstruction Integrated with Color Doppler Mapping for Precise and Rapid Localization of Thyroid Lesions
Published on: February 9, 2024
Thyroid ultrasonography--a review
1Florida Thyroid and Endocrine Clinic, Orlando, Florida 32804, USA.
Objective:
To review the major applications of ultrasonography in studies of the thyroid gland by clinical endocrinologists.
Methods:
The techniques for performance of thyroid ultrasonography and ultrasound-guided fine-needle aspiration biopsy are outlined, and the settings for their use are discussed. Characteristic findings and limitations are described.
Results:
In two situations--the assessment of thyroid nodules and the postoperative follow-up of thyroid cancer--ultrasonography and ultrasound-guided fine-needle aspiration biopsy have proved to be clinically useful when used in combination. On ultrasonography, a hyperechoic nodule with a sharp "halo" is associated with a low risk of malignancy and a hypoechoic nodule with microcalcifications is associated with a high risk of a malignant lesion, but performance of a biopsy is recommended. Ultrasonography coupled with ultrasound-guided fine-needle aspiration biopsy can detect >90% of recurrent cases of thyroid carcinoma. In general, normal lymph nodes appear flattened on ultrasonography, whereas malignant nodes appear more rounded or bulging.
Conclusion:
Thyroid ultrasonography and fine-needle aspiration biopsy are complementary diagnostic procedures in the evaluation of thyroid nodules and for detection of recurrent or metastatic thyroid carcinoma.
Related Concept Videos
01:17Ultrasonography
During an ultrasonography procedure, a handheld device called a...
01:24Imaging Studies II: Ultrasonography
01:20Ultrasound I: Abdominal Ultrasonography
Abdominal ultrasonography, commonly known as abdominal ultrasound, is a vital, non-invasive medical imaging technique widely used in healthcare.
Procedure:
This diagnostic tool allows the clinician to visually inspect internal structures within the abdomen, including vital organs such as the liver, gallbladder, pancreas, kidneys, and spleen.
The abdominal ultrasound process begins with applying a special gel to the patient's skin over the abdomen. This gel enhances the...
01:25Ultrasound II: Endoscopic Ultrasound and FibroScan
Endoscopic Ultrasound (EUS):
01:17Imaging Studies for Cardiovascular System I:Echocardiography
Indications: Echocardiography is utilized to diagnose heart failure, valve disorders, and myocardial infarction. It also assesses cardiac structures' size, shape, and motion, evaluates...