cold sores go through several stages and generally last anywhere from one to three weeks the first symptom you notice will probably be a tingling or itching sensation on your lips chin nose or cheek this is a sign that a cold sore is forming this stage lasts one or two days after which a blister or cluster of blisters will form
Scanner (radio) A scanner (also referred to a police scanner, police scanner radio or radio scanner) is a radio receiver that can automatically tune, or scan, two or more discrete frequencies, stopping when it finds a signal on one of them and then continuing to scan other frequencies when the initial transmission ceases.
Positron emission tomography (PET or PET scan) is a specialized radiology procedure used to examine various body tissues to identify certain conditions. PET may also be used to follow the progress of the treatment of certain conditions. While PET is most commonly used in the fields of neurology, oncology, and cardiology, applications in other fields are currently being studied. PET is a type of nuclear medicine procedure.