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.
like a quarterback dashing for the goal line, the display canât redraw the action fast enough, so the image becomes blurry. To combat this problem, LCD TV manufacturers have tried doubling their refresh rates to 120Hz, and then doubling them again to 240Hz. As a result, modern LCDâs can update their images very quickly, drastically reducing motion blur. For watching sports, or even playing fast-moving video games, higher refresh rates will make a big difference on an LCD TV. and not just because 300 and 600Hz are higher than 240Hz.