Which imaging technique is non-invasive and uses sound waves?

Ultrasound is a non-invasive imaging technique that utilizes high-frequency sound waves to create images of structures within the body. The process involves emitting sound waves that bounce off various tissues, and these echoes are then captured to produce real-time images. This method is particularly advantageous because it does not involve ionizing radiation, making it safe for a variety of patients, including pregnant women and infants.

Additionally, ultrasound is ideal for visualizing soft tissues, organs, and blood flow, and it is widely used in obstetrics, cardiology, and other fields of medicine. The immediacy of real-time imaging allows for dynamic assessments, such as observing the movement of the heart or monitoring fetal development.

Other imaging techniques, such as X-ray, CT scan, and MRI, involve different methodologies and may not align with the non-invasive characteristic of ultrasound in the same context. For example, X-ray and CT scans involve ionizing radiation, which poses certain risks and limitations, while MRI utilizes powerful magnets and radio waves rather than sound waves to create images. Thus, ultrasound stands out as the preferred choice in scenarios requiring a non-invasive, safe, and effective imaging technique.