Dye is used to enhance tissues, to increase contrast between tissues that receive blood and structures that do not. There can be scans before, during, and at different delays after injection. The enhancement pattern, or lack of enhancement, is the basis for diagnosis (along with morphologic information from the scan).
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Side effect of cervical ct scan?
A tri-phasic CT scan is a scan which will show three different stages of dye uptake in the body. The first phase will be before the injection of the dye, the second stage will be for when the dye is in the arteries (roughly 20 seconds after injection) and the third phase will be when the dye has reached the veins (a few minutes later). Sometimes a fourth scan is also done to show the dye uptake in the kidneys and bladder. A tri-phasic scan clearly delineates lesions in the liver and will show problems and irregularities in the arterial and lymphatic system.
Can I smoke before ct scan
The red dye that is used in a CT scan is a contrast dye. The objective of the dye is so that certain parts of the body will show up clearer in an x-ray. Contrast dye is generally given by IV into the hand or arm.
Theres no problem about eating before neck ct scan,if your concern is if the food you intake might affect the out come,but doctors might advice you not to take any food if you will be given dye,cause some patient tends to vomit when given dye.....