Magister en Física Médica

Facultad de Física

Optical coherent tomography (OCT), technology and medical impact

Matthias Salas, PhD(c), Medical University of Vienna

Miércoles 17 de agosto. 15:30

Sala de seminarios de Física Experimental


Optical coherence tomography (OCT) is a is a well-established imaging technique that allows recording of cross sectional image data with unprecedented high axial resolution. OCT is analogous to ultrasound imaging, except that it uses light instead of sound. Because the velocity of light is extremely high, its echo times delay cannot be measured directly by electronics as in ultrasound. Low-coherence interferometry measure the echo time delay and intensity of backscattered light by comparing it to light that traveled a know reference path length and time delay. This technique has been commercialized by several companies with its main impact in the field of ophthalmology. Nevertheless OCT in combination with catheters and endoscopes enables intraluminal imaging of organs systems. Some medical applications that OCT has proved to be useful are dermatology, gastroenterology, urology, genecology, surgery, neurosurgery among others.