Abstract
Article: The Use of Contrast-Enhanced Ultrasonography for the Characterization of Focal Liver Lesions
Authors: Jennifer E. Bagley, MPH, RDMS, RVT, Dennis E. Paul, RDMS, RDCS, Sutton Halferty, BSMIRS, and Dora DiGiacinto, MEd, RDMS, RDCS
Category: Abdomen [AB]
Credit: 1.25 SDMS CME Credit
Objectives: After studying the article entitled “The Use of Contrast-Enhanced Ultrasonography for the Characterization of Focal Liver Lesions”, you will be able to:
Identify common focal liver lesion characteristics
Characterize ultrasound contrast agents
Describe lesion characteristics with contrast enhanced ultrasound
What is the most common liver mass? Focal nodular hyperplasia Hemangioma Hepatocellular carcinoma Metastatic carcinoma
At what rate does conventional sonography detect focal liver lesions? 8% 20% 50% 70%
Current ultrasound contrast agents go to which location when injected? To a single target organ To a single target organ-system To the organ systems in the vicinity of the injection To the entire vascular system
How are current ultrasound contrast agents expelled from the body? Through the digestive system Through the renal system Through the respiratory system Microbubbles implode as they move through the system
Increase of blood perfusion in a liver lesion will appear as _______. Hyperenhancement Hypoenhancement Isoenhancement Either hyperenhancement or hypoenhancement
What is the enhancement pattern for a hemangioma in the portal venous phase? Early rim enhancement Hyperenhancement Hypoenhanced Spoke-wheel enhancement
Which lesion is associated with spoke wheel enhancement in the arterial phase? Hemangioma HCC FNH Metastasis
What is a characteristic contrast feature for malignant lesions in the late venous phase? Hyperenhancement Hypoenhancement Isoenhancement Central scar
Which of the following steps should occur in the pre-injection phase of the examination? Inject a 2.4 ml bolus of contrast agents Monitor the patient for adverse events Store clips Observe lesion movement with respiration
Which safety index value should be displayed on screen during the examination? Total output power TIb Tis Mechanical Index
Footnotes