* Preparation of computerized CT scan on the abdomen and pelvis
1 - abstain from foods that make up the gases the day before the examination such as: vegetables, fruit, soft water, dairy products and eggs.
2 - Allow to eat: pasta, rice, chicken or boiled meat.
3. Gastrografen is taken with 6 cups water as follows:
       The initial dose is 12 hours before the test.
       The second dose is 6 hours before the test.
       The third dose is 3 hours before the test.
4 - Fasting 6 hours before the examination.
5 - Attendance before the date of examination in half an hour.
6 - Bring the previous tests and radiation, if any.

The injected dose in the patient does not pose a risk to the patient's health under normal circumstances. However, there are precautions to be avoided, as in the case of pregnant women, where radioactive material may be a real danger to the fetus, especially in the first months of pregnancy. It should be noted that the patient is the same source of radiation, and this may continue for several hours after the end of the examination (sometimes for 24 hours), in these cases advised not to contact the patient for long periods during those hours, so as not to contact relatives without radiation unnecessarily.