An adjuvant is a substance added to some vaccines to enhance the immune response of vaccinated individuals. The aluminum salts in some U.S. licensed vaccines are aluminum hydroxide, aluminum phosphate, alum (potassium aluminum sulfate), or mixed aluminum salts. For example: aluminum salts are used in DTaP vaccines, the pneumococcal conjugate vaccine, and hepatitis B vaccines.
Most CT departments or centers offer a wide array of computed tomography (CT) imaging examinations. Depending on the type of exam you will receive, the length of the actual procedure will typically be between 10 minutes and 45 minutes. A few involved CT examinations take longer than 45 minutes. Also, many CT exams require the patient to hold their breath several times.
Brain scans. To show abnormalities like a brain tumor, a contrast dye is often used. The dye is injected into a vein in the arm. A brain tumor generally soaks up more dye than normal brain tissue and shows up clearly on the scan; occasionally, a brain tumor does not absorb more dye.T scans. CT scans are a type of X-ray that creates a three-dimensional picture of the head by scanning the head from multiple different angles. A computer combines these images into a detailed, cross-sectional view that shows abnormalities in the brain, or tumors.