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Before venipuncture, the skin is cleansed in a circular motion.  How much of an area is cleansed?

Which is not a tissue layer of the  wall of the esophagus?

The concentration of iodine in ionic contrast media is:

The most common cause of contrast medium leaking out of a vessel and infiltrating the surrounding tissues is:

Which of the following is true regarding retrograde urography? 1. the ureters must be catheterized; 2. provides little physiologic information; 3. contrast is injected directly into the pelvicalyceal system

The relaxed phase of the heart is termed__________?

Which of the following contrast media are used for examinations of the gastrointestinal tract?1.   Air2.   Barium sulfate3.   Water-soluble iodinated solution

The large intestine is made up of a series of pouches called the:

Which projection of the colon best demonstrates the Rectosigmoid are with less superimposition ?

Which of the following is not an essential projections for examination of the small intestine?1.   AP2.   PA3.   Lateral