PEDIATRIC ARDMS EXAM AND PRACTICE EXAM 2026/2027 |
COMPLETE QUESTIONS AND ANSWERS (VERIFIED ANSWERS) |
EXAM PREP | LATEST EXAM GUIDE 2026&2027
1. During a pediatric abdominal ultrasound, a 3-year-old becomes restless and
repeatedly moves away from the transducer. Which approach is most appropriate
to improve the examination?
A. Increase the transducer frequency substantially
B. Use age-appropriate distraction and involve the caregiver when appropriate
C. Perform the examination without explaining the procedure
D. Apply maximum transducer pressure to shorten the examination
Answer: B
Age-appropriate distraction and caregiver involvement can reduce anxiety and movement
while maintaining a safe, child-centered examination.
2. A sonographer is evaluating the pylorus in an infant with suspected hypertrophic
pyloric stenosis. Which finding most strongly supports the diagnosis?
A. Thickened pyloric muscle with an elongated pyloric channel
B. Dilated colon with decreased peristalsis
C. Enlarged gallbladder with sludge
D. Thickened small-bowel wall with increased vascularity
Answer: A
Hypertrophic pyloric stenosis classically produces a thickened pyloric muscle and elongated
channel on ultrasound.
3. Which transducer is generally most appropriate for routine superficial pediatric
thyroid imaging?
A. Low-frequency curvilinear transducer
B. Phased-array cardiac transducer
C. High-frequency linear transducer
D. Endocavitary transducer
Answer: C
A high-frequency linear transducer provides the spatial resolution needed for superficial
structures such as the pediatric thyroid.
4. During a neonatal cranial ultrasound through the anterior fontanelle, the
sonographer identifies an echogenic focus within the caudothalamic groove. What
should be suspected?
, A. Periventricular leukomalacia
B. Germinal matrix hemorrhage
C. Agenesis of the corpus callosum
D. Hydrocephalus
Answer: B
The caudothalamic groove is a characteristic location for germinal matrix hemorrhage in
premature or vulnerable neonates.
5. A pediatric patient has suspected intussusception. Which sonographic appearance is
most characteristic?
A. Target or doughnut sign
B. Snowstorm appearance
C. String-of-beads sign
D. Double-wall artifact
Answer: A
Intussusception commonly produces concentric bowel-within-bowel rings, producing the
classic target or doughnut appearance.
6. When imaging a neonate, which principle should guide acoustic output selection?
A. Always use maximum output to improve penetration
B. Use the lowest output that provides diagnostically adequate information
C. Output should be identical for every pediatric examination
D. Increase output whenever the patient moves
Answer: B
The ALARA principle requires using acoustic output as low as reasonably achievable while
obtaining adequate diagnostic information.
7. A 6-month-old has an enlarged head circumference and ultrasound demonstrates
marked ventricular enlargement. Which additional observation is most important
when assessing for hydrocephalus?
A. Hair distribution
B. Ventricular size and associated brain structures
C. Gallbladder wall thickness
D. Renal cortical echogenicity
Answer: B
Assessment of ventricular size, configuration, and surrounding brain structures is central to
neonatal and infant hydrocephalus evaluation.
, 8. Which feature is most characteristic of a normal pediatric kidney compared with an
adult kidney?
A. Complete absence of corticomedullary differentiation
B. Relatively prominent renal pyramids
C. Consistently increased cortical echogenicity
D. Absence of a renal sinus
Answer: B
Normal pediatric kidneys may have prominent pyramids that can appear relatively
hypoechoic compared with the renal cortex.
9. A child presents with acute right lower-quadrant pain and fever. Ultrasound
demonstrates a noncompressible tubular structure measuring greater than expected
for a normal appendix. What diagnosis should be considered?
A. Appendicitis
B. Pyloric stenosis
C. Volvulus
D. Necrotizing enterocolitis
Answer: A
A dilated, noncompressible appendix in the appropriate clinical setting is a major sonographic
feature of acute appendicitis.
10. What is the primary reason pediatric ultrasound examinations require particular
attention to transducer pressure?
A. Excessive pressure can distort small structures and cause discomfort
B. Pressure eliminates the need for Doppler imaging
C. Pressure always improves visualization of every organ
D. Pressure prevents acoustic enhancement
Answer: A
Children have small, compressible structures and may be sensitive to discomfort, so
appropriate pressure is essential for accurate imaging and patient cooperation.
11. A sonographer evaluates a newborn's hip for developmental dysplasia. Which
structures are particularly important in the standard ultrasound assessment?
A. Femoral head and acetabulum
B. Tibia and fibula
C. Patella and quadriceps tendon
D. Sacrum and coccyx
Answer: A
, Hip ultrasound for developmental dysplasia evaluates the relationship and morphology of the
femoral head and acetabulum.
12. During pediatric renal Doppler imaging, which adjustment can help improve
sensitivity to slow blood flow?
A. Increase the wall filter substantially
B. Use an appropriately low PRF and wall filter
C. Increase the scale to its maximum
D. Eliminate color gain
Answer: B
Low-flow pediatric vessels require appropriately low PRF and wall-filter settings so slow blood
flow is not inadvertently suppressed.
13. A premature infant undergoes cranial ultrasound. Which region is particularly
important for detecting early germinal matrix hemorrhage?
A. Caudothalamic groove
B. Cerebellar vermis only
C. Frontal sinus
D. Pituitary stalk
Answer: A
The caudothalamic groove is a common site of germinal matrix hemorrhage and should be
carefully evaluated in premature infants.
14. Which finding is most suggestive of testicular torsion on pediatric scrotal
ultrasound?
A. Increased intratesticular arterial flow
B. Decreased or absent intratesticular flow
C. Bilateral symmetric vascularity
D. Simple epididymal cyst
Answer: B
Testicular torsion compromises vascular supply, commonly resulting in reduced or absent
intratesticular Doppler flow compared with the unaffected side.
15. A child with suspected ovarian torsion undergoes ultrasound. Which finding
increases concern for torsion?
A. Enlarged ovary with peripheral follicles and abnormal vascularity
B. Small homogeneous ovary with normal flow
C. Normal uterus with no adnexal abnormality
D. Isolated bladder wall thickening
COMPLETE QUESTIONS AND ANSWERS (VERIFIED ANSWERS) |
EXAM PREP | LATEST EXAM GUIDE 2026&2027
1. During a pediatric abdominal ultrasound, a 3-year-old becomes restless and
repeatedly moves away from the transducer. Which approach is most appropriate
to improve the examination?
A. Increase the transducer frequency substantially
B. Use age-appropriate distraction and involve the caregiver when appropriate
C. Perform the examination without explaining the procedure
D. Apply maximum transducer pressure to shorten the examination
Answer: B
Age-appropriate distraction and caregiver involvement can reduce anxiety and movement
while maintaining a safe, child-centered examination.
2. A sonographer is evaluating the pylorus in an infant with suspected hypertrophic
pyloric stenosis. Which finding most strongly supports the diagnosis?
A. Thickened pyloric muscle with an elongated pyloric channel
B. Dilated colon with decreased peristalsis
C. Enlarged gallbladder with sludge
D. Thickened small-bowel wall with increased vascularity
Answer: A
Hypertrophic pyloric stenosis classically produces a thickened pyloric muscle and elongated
channel on ultrasound.
3. Which transducer is generally most appropriate for routine superficial pediatric
thyroid imaging?
A. Low-frequency curvilinear transducer
B. Phased-array cardiac transducer
C. High-frequency linear transducer
D. Endocavitary transducer
Answer: C
A high-frequency linear transducer provides the spatial resolution needed for superficial
structures such as the pediatric thyroid.
4. During a neonatal cranial ultrasound through the anterior fontanelle, the
sonographer identifies an echogenic focus within the caudothalamic groove. What
should be suspected?
, A. Periventricular leukomalacia
B. Germinal matrix hemorrhage
C. Agenesis of the corpus callosum
D. Hydrocephalus
Answer: B
The caudothalamic groove is a characteristic location for germinal matrix hemorrhage in
premature or vulnerable neonates.
5. A pediatric patient has suspected intussusception. Which sonographic appearance is
most characteristic?
A. Target or doughnut sign
B. Snowstorm appearance
C. String-of-beads sign
D. Double-wall artifact
Answer: A
Intussusception commonly produces concentric bowel-within-bowel rings, producing the
classic target or doughnut appearance.
6. When imaging a neonate, which principle should guide acoustic output selection?
A. Always use maximum output to improve penetration
B. Use the lowest output that provides diagnostically adequate information
C. Output should be identical for every pediatric examination
D. Increase output whenever the patient moves
Answer: B
The ALARA principle requires using acoustic output as low as reasonably achievable while
obtaining adequate diagnostic information.
7. A 6-month-old has an enlarged head circumference and ultrasound demonstrates
marked ventricular enlargement. Which additional observation is most important
when assessing for hydrocephalus?
A. Hair distribution
B. Ventricular size and associated brain structures
C. Gallbladder wall thickness
D. Renal cortical echogenicity
Answer: B
Assessment of ventricular size, configuration, and surrounding brain structures is central to
neonatal and infant hydrocephalus evaluation.
, 8. Which feature is most characteristic of a normal pediatric kidney compared with an
adult kidney?
A. Complete absence of corticomedullary differentiation
B. Relatively prominent renal pyramids
C. Consistently increased cortical echogenicity
D. Absence of a renal sinus
Answer: B
Normal pediatric kidneys may have prominent pyramids that can appear relatively
hypoechoic compared with the renal cortex.
9. A child presents with acute right lower-quadrant pain and fever. Ultrasound
demonstrates a noncompressible tubular structure measuring greater than expected
for a normal appendix. What diagnosis should be considered?
A. Appendicitis
B. Pyloric stenosis
C. Volvulus
D. Necrotizing enterocolitis
Answer: A
A dilated, noncompressible appendix in the appropriate clinical setting is a major sonographic
feature of acute appendicitis.
10. What is the primary reason pediatric ultrasound examinations require particular
attention to transducer pressure?
A. Excessive pressure can distort small structures and cause discomfort
B. Pressure eliminates the need for Doppler imaging
C. Pressure always improves visualization of every organ
D. Pressure prevents acoustic enhancement
Answer: A
Children have small, compressible structures and may be sensitive to discomfort, so
appropriate pressure is essential for accurate imaging and patient cooperation.
11. A sonographer evaluates a newborn's hip for developmental dysplasia. Which
structures are particularly important in the standard ultrasound assessment?
A. Femoral head and acetabulum
B. Tibia and fibula
C. Patella and quadriceps tendon
D. Sacrum and coccyx
Answer: A
, Hip ultrasound for developmental dysplasia evaluates the relationship and morphology of the
femoral head and acetabulum.
12. During pediatric renal Doppler imaging, which adjustment can help improve
sensitivity to slow blood flow?
A. Increase the wall filter substantially
B. Use an appropriately low PRF and wall filter
C. Increase the scale to its maximum
D. Eliminate color gain
Answer: B
Low-flow pediatric vessels require appropriately low PRF and wall-filter settings so slow blood
flow is not inadvertently suppressed.
13. A premature infant undergoes cranial ultrasound. Which region is particularly
important for detecting early germinal matrix hemorrhage?
A. Caudothalamic groove
B. Cerebellar vermis only
C. Frontal sinus
D. Pituitary stalk
Answer: A
The caudothalamic groove is a common site of germinal matrix hemorrhage and should be
carefully evaluated in premature infants.
14. Which finding is most suggestive of testicular torsion on pediatric scrotal
ultrasound?
A. Increased intratesticular arterial flow
B. Decreased or absent intratesticular flow
C. Bilateral symmetric vascularity
D. Simple epididymal cyst
Answer: B
Testicular torsion compromises vascular supply, commonly resulting in reduced or absent
intratesticular Doppler flow compared with the unaffected side.
15. A child with suspected ovarian torsion undergoes ultrasound. Which finding
increases concern for torsion?
A. Enlarged ovary with peripheral follicles and abnormal vascularity
B. Small homogeneous ovary with normal flow
C. Normal uterus with no adnexal abnormality
D. Isolated bladder wall thickening
