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Basic Knowledge of Ultrasonography and Its Clinical Use

Evaluation of thyroid and parathyroid gland scan be performed using imaging techniques such as ultrasonography, computed tomography, and magnetic resonance imaging. Each technique has advantages and disadvantages. However, ultrasonography is generally the first choice for diagnosis, preoperative evaluation, and postoperative follow up examination of thyroid and parathyroid diseases. Producing precise ultrasonography results requires knowledge of ultrasound operation and basic anatomy, as well as skills for correct interpretation of normal or abnormal ultrasound images. This article reviews the physics and technology of ultrasound imaging in its clinical application, especially in field of thyroid and parathyroid diseases. <B>(Ko</B><B>rean J Endocrine Surg 2008;8:1-6)</B>