Final answer:
Optical coherence tomography (OCT) is a noninvasive imaging technique that uses light waves to create detailed cross-sectional images of structures within the body.
Step-by-step explanation:
Optical coherence tomography (OCT) is a noninvasive imaging technique that uses light waves to create cross-sectional images of structures within the body. It is similar to computed tomography (CT) but instead of using X-rays, it uses light waves to generate detailed images.
OCT works by measuring the echo time delay and intensity of light that is reflected back from different layers of tissues. This information is used to construct a high-resolution, three-dimensional image of the scanned area. It is commonly used in ophthalmology to examine the retina, but it is also used in other medical fields to visualize tissues and diagnose various conditions.