RDMS PS RDMS Pediatric Sonography
(ARDMS) Exam
Question 1. Which cranial structure is commonly used as a landmark for
the anterior fontanelle approach in neonatal cranial sonography?
A) Corpus callosum
B) Thalamus
C) Falx cerebri
D) Caudate nucleus
Answer: C
Explanation: The falx cerebri is a midline structure easily visualized
through the anterior fontanelle and serves as a key landmark in
neonatal brain imaging.
Question 2. What is the most echogenic normal neonatal brain
structure on ultrasound?
A) Periventricular white matter
B) Choroid plexus
C) Basal ganglia
D) Cerebral cortex
Answer: B
Explanation: The choroid plexus appears highly echogenic in neonates
due to its dense vascularity and is a key landmark in neurosonography.
