Pediatric ARDMS Exam & Practice Exam Master Test Bank |
300 Original Exam-Style Multiple-Choice Questions &
Detailed Clinical Rationales [2026/2027]
Pass your American Registry for Diagnostic Medical Sonography certification on your
first attempt with this massive, high-yield Pediatric Sonography (PE) master practice
test bank containing questions 1 to 300. Master critical diagnostic ultrasound domains,
including pediatric neurosonography, neonatal hips and spines, congenital
abdominal pathologies, hypertrophic pyloric stenosis, and advanced Doppler
hemodynamics. Every verified, original exam-style question features a highly detailed
clinical rationale to sharpen your imaging artifact recognition, scan plane precision, and
guarantee your ARDMS credentials.
1. A neonate presents with a bulging anterior fontanelle. Ultrasound demonstrates a
fluid collection in the subarachnoid space. Which condition is most likely?
A. Subdural hematoma
B. Hydrocephalus
C. Subarachnoid hemorrhage
D. Benign enlargement of the subarachnoid spaces
Answer: D. Benign enlargement of the subarachnoid spaces
Rationale: Benign enlargement of the subarachnoid spaces is a common cause of
macrocephaly in infants, with fluid seen over the cerebral convexities but no ventricular
dilation.
2. On neonatal cranial ultrasound, a germinal matrix hemorrhage is most commonly
located in which area?
A. Caudothalamic groove
B. Occipital lobe
C. Frontal lobe
D. Cerebellar vermis
,Answer: A. Caudothalamic groove
Rationale: The germinal matrix is located in the caudothalamic groove, making it the most
common site for germinal matrix hemorrhage in premature infants.
3. Which sonographic finding is characteristic of periventricular leukomalacia?
A. Increased periventricular echogenicity
B. Decreased periventricular echogenicity
C. Ventricular dilation
D. Corpus callosum agenesis
Answer: A. Increased periventricular echogenicity
Rationale: Periventricular leukomalacia appears as increased periventricular echogenicity,
often progressing to cystic changes.
4. A newborn with a suspected vein of Galen malformation is evaluated. Which finding is
expected on ultrasound?
A. Anechoic midline mass with turbulent flow
B. Hyperechoic midline mass without flow
C. Multiple small cysts
D. Ventricular collapse
Answer: A. Anechoic midline mass with turbulent flow
Rationale: A vein of Galen malformation appears as an anechoic midline structure with
high-velocity turbulent flow on Doppler.
5. Which cranial ultrasound finding is associated with agenesis of the corpus callosum?
A. Parallel lateral ventricles
B. Dilated third ventricle
C. Normal cavum septum pellucidum
D. Cerebellar hypoplasia
,Answer: A. Parallel lateral ventricles
Rationale: Agenesis of the corpus callosum results in parallel, widely separated lateral
ventricles and absence of the cavum septum pellucidum.
6. A premature infant has a grade III intraventricular hemorrhage. What does this grade
indicate?
A. Hemorrhage confined to germinal matrix
B. Hemorrhage with ventricular dilation
C. Hemorrhage with parenchymal involvement
D. Hemorrhage with hydrocephalus
Answer: B. Hemorrhage with ventricular dilation
Rationale: Grade III IVH is defined as hemorrhage within the ventricles causing ventricular
dilation.
7. Which ultrasound approach is best for evaluating the neonatal spine?
A. Linear high-frequency transducer
B. Curvilinear low-frequency transducer
C. Phased array transducer
D. Endocavitary transducer
Answer: A. Linear high-frequency transducer
Rationale: A high-frequency linear transducer provides optimal resolution for the
superficial neonatal spine.
8. A child with a tethered cord is evaluated. Which finding is expected on ultrasound?
A. Low-lying conus medullaris
B. High-lying conus medullaris
C. Normal filum terminale
D. Absent sacrum
, Answer: A. Low-lying conus medullaris
Rationale: Tethered cord is characterized by a low-lying conus medullaris below the L2–L3
level, often with a thickened filum terminale.
9. Which condition is characterized by a cystic dilation of the central canal of the spinal
cord?
A. Syringomyelia
B. Meningocele
C. Myelomeningocele
D. Diastematomyelia
Answer: A. Syringomyelia
Rationale: Syringomyelia is a fluid-filled cavity within the spinal cord, often seen with
Chiari malformations.
10. A pediatric patient presents with a palpable abdominal mass. Ultrasound shows a
large, heterogeneous mass arising from the kidney. Which diagnosis is most likely?
A. Wilms tumor
B. Neuroblastoma
C. Hepatoblastoma
D. Renal cell carcinoma
Answer: A. Wilms tumor
Rationale: Wilms tumor is the most common pediatric renal tumor, typically appearing as
a large, heterogeneous renal mass.
11. Which sonographic feature favors neuroblastoma over Wilms tumor?
A. Encasement of vessels
B. Origin from the kidney
300 Original Exam-Style Multiple-Choice Questions &
Detailed Clinical Rationales [2026/2027]
Pass your American Registry for Diagnostic Medical Sonography certification on your
first attempt with this massive, high-yield Pediatric Sonography (PE) master practice
test bank containing questions 1 to 300. Master critical diagnostic ultrasound domains,
including pediatric neurosonography, neonatal hips and spines, congenital
abdominal pathologies, hypertrophic pyloric stenosis, and advanced Doppler
hemodynamics. Every verified, original exam-style question features a highly detailed
clinical rationale to sharpen your imaging artifact recognition, scan plane precision, and
guarantee your ARDMS credentials.
1. A neonate presents with a bulging anterior fontanelle. Ultrasound demonstrates a
fluid collection in the subarachnoid space. Which condition is most likely?
A. Subdural hematoma
B. Hydrocephalus
C. Subarachnoid hemorrhage
D. Benign enlargement of the subarachnoid spaces
Answer: D. Benign enlargement of the subarachnoid spaces
Rationale: Benign enlargement of the subarachnoid spaces is a common cause of
macrocephaly in infants, with fluid seen over the cerebral convexities but no ventricular
dilation.
2. On neonatal cranial ultrasound, a germinal matrix hemorrhage is most commonly
located in which area?
A. Caudothalamic groove
B. Occipital lobe
C. Frontal lobe
D. Cerebellar vermis
,Answer: A. Caudothalamic groove
Rationale: The germinal matrix is located in the caudothalamic groove, making it the most
common site for germinal matrix hemorrhage in premature infants.
3. Which sonographic finding is characteristic of periventricular leukomalacia?
A. Increased periventricular echogenicity
B. Decreased periventricular echogenicity
C. Ventricular dilation
D. Corpus callosum agenesis
Answer: A. Increased periventricular echogenicity
Rationale: Periventricular leukomalacia appears as increased periventricular echogenicity,
often progressing to cystic changes.
4. A newborn with a suspected vein of Galen malformation is evaluated. Which finding is
expected on ultrasound?
A. Anechoic midline mass with turbulent flow
B. Hyperechoic midline mass without flow
C. Multiple small cysts
D. Ventricular collapse
Answer: A. Anechoic midline mass with turbulent flow
Rationale: A vein of Galen malformation appears as an anechoic midline structure with
high-velocity turbulent flow on Doppler.
5. Which cranial ultrasound finding is associated with agenesis of the corpus callosum?
A. Parallel lateral ventricles
B. Dilated third ventricle
C. Normal cavum septum pellucidum
D. Cerebellar hypoplasia
,Answer: A. Parallel lateral ventricles
Rationale: Agenesis of the corpus callosum results in parallel, widely separated lateral
ventricles and absence of the cavum septum pellucidum.
6. A premature infant has a grade III intraventricular hemorrhage. What does this grade
indicate?
A. Hemorrhage confined to germinal matrix
B. Hemorrhage with ventricular dilation
C. Hemorrhage with parenchymal involvement
D. Hemorrhage with hydrocephalus
Answer: B. Hemorrhage with ventricular dilation
Rationale: Grade III IVH is defined as hemorrhage within the ventricles causing ventricular
dilation.
7. Which ultrasound approach is best for evaluating the neonatal spine?
A. Linear high-frequency transducer
B. Curvilinear low-frequency transducer
C. Phased array transducer
D. Endocavitary transducer
Answer: A. Linear high-frequency transducer
Rationale: A high-frequency linear transducer provides optimal resolution for the
superficial neonatal spine.
8. A child with a tethered cord is evaluated. Which finding is expected on ultrasound?
A. Low-lying conus medullaris
B. High-lying conus medullaris
C. Normal filum terminale
D. Absent sacrum
, Answer: A. Low-lying conus medullaris
Rationale: Tethered cord is characterized by a low-lying conus medullaris below the L2–L3
level, often with a thickened filum terminale.
9. Which condition is characterized by a cystic dilation of the central canal of the spinal
cord?
A. Syringomyelia
B. Meningocele
C. Myelomeningocele
D. Diastematomyelia
Answer: A. Syringomyelia
Rationale: Syringomyelia is a fluid-filled cavity within the spinal cord, often seen with
Chiari malformations.
10. A pediatric patient presents with a palpable abdominal mass. Ultrasound shows a
large, heterogeneous mass arising from the kidney. Which diagnosis is most likely?
A. Wilms tumor
B. Neuroblastoma
C. Hepatoblastoma
D. Renal cell carcinoma
Answer: A. Wilms tumor
Rationale: Wilms tumor is the most common pediatric renal tumor, typically appearing as
a large, heterogeneous renal mass.
11. Which sonographic feature favors neuroblastoma over Wilms tumor?
A. Encasement of vessels
B. Origin from the kidney
