Broca's area is closely related to Wernicke's area. It, too, works with spoken language and was actually discovered before Wernicke's area. Both of these areas are found on the same side of the brain, usually the left.
Intravenous dye may be used in some imaging procedures (e.g., CT scan, MRI scan). Contrast dye is not used in all cases.Although rare, some patients suffer allergic reactions to the dye and newer contrast agents are quite expensive.he primary risk of a CT scan is radiation. If intravenous contrast is used, there is a risk for allergic reaction as well. Overall, the risks of CT are small.
After the Abdominal CT Scan. 1  If contrast dye was used, you are encouraged to drink clear fluids to avoid dehydration and help flush the dye out of your system. 2  If you underwent CT portography, the catheter is removed and a pressure dressing is applied to the puncture site. 3  You are free to resume your normal diet and activities.