The USG Small Parts scan is a high-precision, focused ultrasound used to examine specific, superficial structures of the body. This is not a broad scan; it's a detailed look at a particular area, such as the thyroid gland, the scrotum (testes), or a specific lump or swelling just under the skin. This safe, radiation-free, and painless test is the gold standard for getting a clear, real-time picture of these structures, providing the detailed answers your doctor needs to make an accurate diagnosis.