후두의 영상기록

Direct and indirect laryngeal photography is simple results but the images obtained from both methods are too small to differentiate the laryngeal pathology.

Fiberscopic laryngeal photography is very useful in case of children and adult with hyperactive gag reflex. But the image obtained is distorted and less clear to demonstrate the early mucosal lesion.

90° Telescopic laryngeal photography can be taken under local anesthesia and provides a large, clear wide-angle view but there is some difficult in exposing and focusing the larynx.

0° Telescopic laryngeal photography provides a large excellent picture of the larynx, especially a close-up view for detecting early mucosal lesion of the vocal cord. But there is some limit for exposing posterior glottis, arytenoid, piriform sinus and epiglottis.

Microscopic laryngeal photography provides variable sized image according to different magnification and relatively clear picture. But it requires bright illumination and there is some limits for posterior glottis, arytenoid, piriform sinus and epiglottis.