A-scan Ultrasound

An A-scan ultrasound is a medical imaging technique that uses high-frequency sound waves to create a one-dimensional, detailed measurement of internal structures. It works by emitting sound pulses into the body and detecting the echoes that bounce back from different tissues, such as the eye or brain. The time it takes for echoes to return helps determine distances and shapes of structures. Primarily used in ophthalmology and neurology, A-scan provides precise measurements essential for diagnoses, surgical planning, and assessing conditions, functioning as a fundamental tool for non-invasive internal imaging.