Imaging Science. Background. Imaging Science is dedicated to exploring the following imaging modalities: MRI (Magnetic Resonance Imaging), CT (Computed Tomography), Ultrasound, PET (Positron Emission Tomography), PET-CT, and X-ray.art of the history of Imaging Science includes the arrival of the 8-Tesla magnet during the last week of December 1997, which achieved the 8-Tesla field in February 10, 1998.
Coated or white tongue. Introduction. A coated or white tongue occurs when the surface is colonised by bacteria or fungi, and dead cells become trapped between the small nodules on the tongue. A coated tongue isn't a disease and isn't usually a sign of anything serious. It's usually only temporary.
Answer. Every now and then you notice that your tongue (usually a healthy pink) is coated in white. While a white tongue is something that can be alarming, there is no need to worry. Most of the time, the cause of a white tongue is harmless and temporary. The surface of your tongue is covered with papillae. If your tongue is entirely coated in white, you are likely to have an inflammation of the papillae that is caused by dead bacteria, debris and dead cells getting stuck among them. In rare cases, however, it can be a sign of a variety of serious diseases or illnesses, ranging from infection to a precancerous condition (i.e., leukoplakia).