1.Describe the three general phases of tissue enhancement. 2. What does “contrast arrival time” mean? What will result if scanning takes place prior to that time? 3. Describe the different methods of...

1.Describe the three general phases of tissue enhancement. 2. What does “contrast arrival time” mean? What will result if scanning takes place prior to that time? 3. Describe the different methods of intravenous contrast media delivery. List the advantages and disadvantages of each method. 4. What safety measures should be followed when using a mechanical injection system to administer contrast media?