The best use of CEA is as a tumor marker, especially for cancers of the gastrointestinal tract. When the CEA level is abnormally high before surgery or other treatment, it is expected to fall to normal following successful surgery to remove all of the cancer.he most frequent cancer which causes an increased CEA is cancer of the colon and rectum. Others include cancers of the pancreas, stomach, breast, lung, and medullary carcinoma of the thyroid and ovarian cancer.
Screen refresh rate is the number of times an image on any type of monitor or television is reconstructed per second. This is measured in hertz.. (Hz) For example, a TV witâ¦h a refresh rate 60Hz, reconstructs the image you're seeing 60 times every second. Basically, the higher the refresh rate on a tv, the representation of motion will be smoother, and the image will flicker less.
The issue is calling it 120Hz when it's really just a 60Hz TV with a scanning backlight causing you to see the same frame twice in a row. Another method for potentially reducing motion blur slightly, but increasing the claimed refresh rate a lot, is video processing.ince the one ClearScan 120Hz TV we've reviewed of Toshiba's this year was most definitely a 60Hz LCD, it's, ahem, clear the company is taking liberties in what 120Hz actually means.