Computed Tomography For Technologists 2nd Edition Exam Review 100% Correct Answers

Which factors affect the viscosity of an intravenous iodinated contrast agent? 1. iodine concentration 2. lipid solubility 3. total volume delivered 4. temperature of the agent A. 1 and 2 B. 2 and 3 C. 1 and 4 D. 1, 3 and 4 {Ans: C. 1 and 4}A water phantom is scanned and several ROI's are placed in the resulting image. The standard deviation measurements from the ROI's range from 15-25. What can be said about the image? A. it is noisy B. the spatial resolution is 15 to 25lp/cm C. the low contrast resolution is within normal limits D. the radiation dose is unnecessarily high {Ans: A. it is noisy}If the main tissue of interest is liver, which of the following is the best approximate window level setting? A. -600 B. 0 C. 50 D. 600 {Ans: C. 50}Iodinated contrast is administered at a rate of 3ml/s for a routine abdominal scan in which the protocol calls for a delay of 60seconds between the start of the injection and the start of scanning. Soon after the start of the contrast injection, the pt begins to feel an intense warm feeling and being surprised by this calls