Abstract
Article: Contrast-Enhanced Ultrasound: A Technology Primer
Author: Jim Baun, BS, RDMS, RVT, FSDMS
Category: Sonography Principles & Instrumentation [SPI]
Credit: 0.5 SDMS CME Credit
Objectives: After studying the article entitled “Contrast-Enhanced Ultrasound: A Technology Primer,” you will be able to
Describe the microscopic construction of phospholipid-encased ultrasound contrast microbubbles.
Discuss the behavior of contrast-enhanced ultrasound (CEUS) microbubbles upon insonation.
Identify a variety of CEUS performance parameters in clinical practice.
Which of the following are advantages of ultrasound contrast agents (UCAs)?
Linked to iodine allergies Excreted via the kidneys Linked to neurotoxic effects Unrelated to intermediate side effects
Which of the following are primarily responsible for contributing acoustic data in a CEUS image?
Vertical pressure wave reflections Tissue harmonic signal Large bubble structural size Linear scatter
What effect do low mechanical index (MI) instrument settings have on microbubble behavior?
High pressure yields sustained imaging Increasing pressure yields sustained imaging Low pressure provides nonlinear reflections Low pressure that is sustained can shatter the bubble
Clearing the field of view of bubbles with a flash frame is achieved with which of the following MI values? MI < 0.04 MI > 1.9 MI > 1.0 MI < 1.0
Which of the following demonstrates the sensitivity of the ultrasound system to capture bubble activity? Recording masses of bubble signal with decreasing resolution Capturing a diminishing dynamic range of signals from bubble activity Detecting a single injection without booster shots of UCAs Selecting a region of interest that contains fundamental frequencies from bubble activity
Footnotes