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Imaging Chain

The current standard surgical endoscopy imaging system consists of a light source, light‐transmitting cable, endoscope, camera head and camera control unit (CCU), and monitor (ssss1). Each part is critical, and the resulting surgical image can only be as good as the weakest component in the chain. For example, if a surgeon has a full high‐definition (HD) camera, HOPKINS® telescope and light cable, but incorporates into the chain a standard‐resolution monitor, the resulting image quality will be limited by the quality of the screen. Even an old, damaged, or dirty light cable can degrade the image quality of an otherwise high‐end endoscopic imaging system [1–5]. An image troubleshooting guide is presented in ssss1.


ssss1 The basic endoscopic imaging chain.

Source: © KARL STORZ SE & Co. KG, Germany.

The light generated by the light source is transmitted via optical fibers in the fiberoptic light cable and the telescope, to illuminate the anatomical space being observed. The image is transmitted through a series of lenses from the distal tip of the telescope to the eyepiece. Next, the chip in the video camera head senses the image and transmits it to the CCU, which processes the endoscopic image and transmits it to a monitor for viewing. This video projection enables the surgeon to maintain an ergonomic posture and to share this visual information with other participants. Furthermore, video imaging facilitates documentation of procedures, in several formats, valuable for medical records, teaching, client education, or consultation purposes [1–5]. Video imaging also enables remote access to view the procedure via live streaming through an integration platform [6].

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