How does ultrasound help guide biopsies?

Ultrasound plays a crucial role in guiding biopsies by providing real-time imaging, allowing healthcare professionals to visualize the area of interest accurately. This capability is essential for ensuring that the biopsy needle is positioned precisely within the targeted tissue. The use of sound waves creates a live image of structures beneath the skin, which can help identify tumors, cysts, or other abnormalities.

This real-time feedback allows practitioners to adjust the needle's position as needed, significantly increasing the likelihood of collecting an adequate and representative sample while minimizing harm to surrounding tissues. Consequently, it enhances accuracy and safety in the procedure, which are paramount in successful biopsies.

The other options, while they may relate to various medical procedures or technologies, do not accurately represent the primary role of ultrasound in the context of guiding biopsies. For instance, while enhancing contrast and measuring tissue elasticity may be applicable in different diagnostic contexts, they do not directly contribute to the primary function of ultrasound in biopsy procedures.