CT Registry Safety questions with correct answers

The acronym CTDI is used to describeWhich of the following? 1. a specialized CT imaging technique used to measure bone mineral density 2. a quality control test that measures the accuracy of the laser lighting system 3. the radiation dose to the patient during a CT 4. a high-speed CT scanner used for cardiac imaging CORRECT ANSWER the radiation dose to the patient during a CT Contact shields made of _________________ may be used to selectively protect radiosensitive organs that lie within the scanned region during a CT acquisition CORRECT ANSWER bismuth Which of the following technical factors has a direct effect on pt dose? 1. matrix size 2. algorithm 3. mAs 4. window level CORRECT ANSWER mAs Which of the following devices is used to measure the pt dose from a CT exam? 1. Geiger counter