CT Registry Review Study Guide

An average range for activated PTT is? CORRECT ANSWER 25-35 seconds What is the correct angle of insertion for placing a butterfly needle into a vein for intravenous administration of a contrast media? CORRECT ANSWER 15 degrees A total volume of 125 mls of an iodinated contrast agent is administered intravenously via automatic injector in 50 seconds. The flow rate for this injection is? CORRECT ANSWER 2.5 mL/sec The acronym CTDI is used to describe what? CORRECT ANSWER The radiation dose to the patient during a CT scan. While one is obtaining a thorough history from a patient prior to the intravenous injection of an iodinated contrast material, what topics should be included? CORRECT ANSWER Any prior allergic reactions to contrast media and a history of asthma. What are three factors that may affect a patient's calculated glomerular filtration rate (GFR)? CORRECT ANSWER Age, sex, and race Which intravenous contrast agent administration methods provides the greatest overall plasma iodine concentration? C