Abstract
Article: Pseudothrombus of the Aorta: A Common Mirror Artifact in Pediatric Patients
Authors: Tomas Dobrocky, MD, and Enno Stranzinger, MD
Category: Physics and Instrumentation
Credit: 1.0 SDMS CME Credit
Objectives: After studying the article entitled “Pseudothrombus of the Aorta: A Common Mirror Artifact in Pediatric Patients,” you will be able to:
Identify the artifact of an aortic pseudomass
Use appropriate instrument settings to distinguish an artifact from aortic thrombosis
Explain the etiology of neonatal aortic thrombosis
The prevalence of an aortic pseudomass was noted retrospectively in this study in approximately what percentage of patients? 10% 20% 25% 35%
Aortic pseudomass presented on gray-scale imaging as Hyperechoic and intraluminal Hypoechoic and intraluminal Hyperechoic, both within and outside the lumen Hyperechoic and extraluminal
All artifacts noted to be aortic pseudomass were seen by gray-scale imaging to Be in continuous contact with the aortic wall Have no contact with the aortic wall Be adherent to the aortic wall Extend proximal to the superior mesenteric artery origin
Symptomatic neonatal aortic thrombosis is associated most frequently with Trauma Arterial umbilical catheterization Femoral arterial catheterization Cardiac catheterization
Symptomatic neonatal aortic thrombosis occurs with an approximate frequency per 100,000 live births of 2 cases 3 cases 4 cases 5 cases
Typical treatment for neonatal aortic thrombosis is Surgical thrombectomy Endovascular percutaneous thrombectomy Anticoagulation, possibly with fibrinolytic therapy Neonatal intensive care unit observation
Aortic pseudomass was seen most prominently when the transducer Was used at its highest frequency possible Was placed in a right lateral approach Directed the sound beam at an oblique angle to the aorta Directed the sound beam perpendicular to the aorta
True aortic thrombosis in pediatric patients typically is characterized on gray-scale imaging by all of the following except: Hypoechogenicity relative to surrounding tissue Adherence to the aortic wall Irregular shape Persistent findings after instrument optimization
The finding of aortic pseudomass is less likely too be seen in a patient With very low body mass index With significant subcutaneous fat Of small size and stature With no bowel gas and unobstructed visualization of the aorta
The likely source of the finding of an aortic pseudomass is A reverberation artifact from the portal vein A reverberation artifact from the distal aortic wall A reverberation artifact from the superior mesenteric artery A mirror image artifact of the adjacent liver
Footnotes