Sometimes a contrast dye is used as it shows up clearer on the screen. A quality CT scan of the leg will use multiple x-rays to make cross sectional pictures of the leg. Reasons for a Leg CT scan: CT scans are used for a multitude of reasons. They may be done to check for certain cancers in various different ways including to detect abnormal tumors, growths or lumps. They also identify the location of tumors, the stage of cancer, and where to perform a biopsy.
Fasting is primarily a movement of willing abstinence or reduction from certain or all food, drink, or both, for a period of time. An absolute fast is normally defined as abstinence from all food and liquid for a defined period, usually a period of 24 hours, or a number of days. Other fasts may be only partially restrictive, limiting particular foods or substances. The fast may also be intermittent in nature.
Fasting Requirements. Fasting means that, with the exception of water, you refrain from eating or drinking for a minimum of 8 hours (10 to 12 hours is preferable) prior to the draw. This means no coffee or tea, so save that morning trip to the cafe cafÃ© for after your. draw