What determines the resolution of an endoscope?
For endoscopic video imaging, resolution is a function of pixel density; the higher the pixel density, the better the resolution. At this time, standard definition endoscopes offer a pixel density of 100 000 to 400 000 pixels, meaning that each image is built from 100 000 to 400 000 pixels.
What is high resolution endoscopy?
High-resolution endoscopy is emerging in major centers that treat patients with Barrett’s esophagus and may be more widely available, enabling recognition of intestinal metaplasia and high-grade dysplasia (HGD) in the clinical setting by white light endoscopy.
What is magnification endoscopy?
The ability to magnify endoscopic images in real-time (magnification endoscopy) permits visualization of mucosal details that cannot be seen with standard endoscopy. Magnification endoscopes include an adjustable focusing mechanism that permits standard endoscopic views and the ability to enlarge the image.
What is the purpose of an endoscopy?
Endoscopy is a procedure that allows a doctor to view the inside of a person’s body. Doctors use it to diagnose diseases in the following parts of the body: Esophagus. Stomach.
What is confocal laser endomicroscopy?
Confocal laser endomicroscopy and endocytoscopy are endoscopic technologies that permit high-resolution assessment of gastrointestinal mucosal histology at a cellular and sub-cellular level.
What is Laser Endomicroscopy?
Abstract. Confocal laser endomicroscopy (CLE) is a novel tool in the endoscopist’s armamentarium. It allows on-site histological information. The ability of gastroenterologists to interpret such microscopic information has been demonstrated in multiple studies from the upper and lower gastrointestinal tract.
Does an endoscopy look at lungs?
A light and a small camera on the bronchoscope allow the doctor to look inside the lungs’ airways. Bronchoscopy is a procedure that lets doctors look at your lungs and air passages. It’s usually performed by a doctor who specializes in lung disorders (a pulmonologist).
What’s the difference between microscope magnification and resolution?
These two concepts are microscope resolution and microscope magnification. From a technical perspective, microscope resolution is a quantified concept that is defined by the numerical aperture (N.A.) rating of the microscope objective lens.
Which is better a microscope or a metallurgical microscope?
The magnifications of both of these images is very similar however, notice how much easier it is to read the printed letters in the image below that was captured with the metallurgical microscope. This ability to read the letters is due to better resolution, which was obtained beacuse of a higher numerical aperture of the lens used.
Which is easier to focus a 4X or 10x microscope?
Anyone who regularly uses a desktop microscope knows that a 4x or 10x objective is much easier to focus than a 60x or 100x objective. The reason is because the depth of field of the lower NA objectives is very large (so, more stuff is in focus at the same time).
How is the magnification of a 20x objective determined?
In general, a 20x objective maps 0.5 microns (of the specimen on the slide) to a single pixel on the camera. The final magnification is obtained by dividing the display pixel size (in microns) by the pixel mapping. For a 70″ HD TV (1920×1080), the pixel size is about 0.8mm (800 microns).