Question

Advantages of automatic power injectors in comparison with the manual bolus method of intravenous contrast administration include:

1. Increased tissue enhancement because of faster injection times
2. Uniform administration of contrast agent over the entire length of the study
3. Decreased incidence of adverse reaction to contrast agent
A. 1 only.
B. 3 only.
C. 1 and 2 only.
D. 2 and 3 only.

Answer 1

Automatic power injectors provide increased tissue enhancement and uniform administration of contrast agent over the manual bolus method, but do not significantly reduce adverse reactions to contrast agents.

Step-by-step explanation:

The advantages of automatic power injectors compared with the manual bolus method of intravenous contrast administration are primarily related to image enhancement and procedural efficiency in radiological studies. Automatic power injectors can provide increased tissue enhancement due to their ability to administer contrast at faster injection times. This faster delivery enhances the image quality, particularly in vascular structures, because it can help in achieving and maintaining peak contrast levels during imaging. Additionally, automatic injectors ensure uniform administration of contrast over the entire length of the study, which is crucial for consistent image quality and accurate diagnoses.

However, the incidence of adverse reactions to contrast agent is not significantly reduced by using an automatic power injector compared to the manual bolus method. Adverse reactions are more related to patient individual factors and the type of contrast used rather than the method of administration. Therefore, the correct answer to the student's question is C. 1 and 2 only.