Pediatric ARDMS Exam & Practice Exam Master Test Bank |
350 Original Exam-Style Multiple-Choice Questions &
Detailed Clinical Rationales
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. What is the normal resistive index (RI) range for the renal arteries in a healthy child?
A. 0.2–0.4
B. 0.4–0.6
C. 0.6–0.8
D. 0.8–1.0
Answer: C. 0.6–0.8
Rationale: A normal renal resistive index in children is typically between 0.6 and 0.8.
Elevated RI may indicate renal parenchymal disease or obstruction.
2. Which ultrasound finding is most consistent with a normal neonatal thymus?
A. Homogeneous, hypoechoic with thin septa
B. Heterogeneous, hyperechoic
C. Cystic with septations
D. Calcified
Answer: A. Homogeneous, hypoechoic with thin septa
Rationale: The normal pediatric thymus is homogeneous, hypoechoic, and may contain
thin echogenic septa. It should not be confused with pathology.
,3. A child presents with a painless scrotal mass. Ultrasound shows a “bag of worms”
appearance. What is the diagnosis?
A. Hydrocele
B. Varicocele
C. Spermatocele
D. Testicular tumor
Answer: B. Varicocele
Rationale: Varicocele appears as multiple dilated veins in the pampiniform plexus, often
described as a “bag of worms.” It is more common on the left side.
4. Which measurement is used to diagnose developmental dysplasia of the hip on
ultrasound?
A. Alpha angle
B. Beta angle
C. Cartilage thickness
D. Joint space width
Answer: A. Alpha angle
Rationale: The alpha angle measures the bony acetabular roof. An alpha angle less than
60 degrees is consistent with hip dysplasia.
5. What is the sonographic appearance of a normal neonatal kidney?
A. Echogenic medullary pyramids
B. Hypoechoic cortex
C. Echogenic sinus
D. All of the above
Answer: D. All of the above
Rationale: The normal neonatal kidney has echogenic medullary pyramids, a hypoechoic
cortex, and an echogenic renal sinus.
,6. A child with recurrent urinary tract infections is evaluated. Ultrasound shows a dilated
ureter and renal pelvis. What is the most likely diagnosis?
A. Vesicoureteral reflux
B. Ureteropelvic junction obstruction
C. Ureterocele
D. Ectopic ureter
Answer: A. Vesicoureteral reflux
Rationale: Vesicoureteral reflux causes dilation of the ureter and renal pelvis due to
backward flow of urine.
7. Which ultrasound finding is characteristic of a choledochal cyst?
A. Cystic dilation of the common bile duct
B. Gallbladder wall thickening
C. Gallstones
D. Pericholecystic fluid
Answer: A. Cystic dilation of the common bile duct
Rationale: Choledochal cysts are congenital dilations of the biliary tree, most commonly
involving the common bile duct.
8. A neonate with bilious vomiting is evaluated. Ultrasound shows a “whirlpool sign.”
What is the most likely diagnosis?
A. Malrotation with volvulus
B. Pyloric stenosis
C. Intussusception
D. Duodenal atresia
Answer: A. Malrotation with volvulus
, Rationale: The whirlpool sign represents twisted mesentery and superior mesenteric vein
around the artery, indicating malrotation with volvulus.
9. Which sonographic finding is most specific for acute appendicitis in children?
A. Non-compressible appendix >6 mm
B. Periappendiceal fluid
C. Increased echogenicity of mesentery
D. Free air
Answer: A. Non-compressible appendix >6 mm
Rationale: A non-compressible appendix measuring greater than 6 mm in diameter is the
most specific sonographic finding for appendicitis.
10. A child with sickle cell disease presents with abdominal pain. Ultrasound shows
multiple gallstones. What is the most likely cause?
A. Pigment stones
B. Cholesterol stones
C. Calcium bilirubinate stones
D. Mixed stones
Answer: A. Pigment stones
Rationale: Children with sickle cell disease commonly develop pigment gallstones due to
chronic hemolysis.
11. Which ultrasound finding is characteristic of a normal neonatal adrenal gland?
A. Thin, echogenic gland
B. Thick, hypoechoic gland
C. Cystic gland
D. Calcified gland
Answer: A. Thin, echogenic gland
350 Original Exam-Style Multiple-Choice Questions &
Detailed Clinical Rationales
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. What is the normal resistive index (RI) range for the renal arteries in a healthy child?
A. 0.2–0.4
B. 0.4–0.6
C. 0.6–0.8
D. 0.8–1.0
Answer: C. 0.6–0.8
Rationale: A normal renal resistive index in children is typically between 0.6 and 0.8.
Elevated RI may indicate renal parenchymal disease or obstruction.
2. Which ultrasound finding is most consistent with a normal neonatal thymus?
A. Homogeneous, hypoechoic with thin septa
B. Heterogeneous, hyperechoic
C. Cystic with septations
D. Calcified
Answer: A. Homogeneous, hypoechoic with thin septa
Rationale: The normal pediatric thymus is homogeneous, hypoechoic, and may contain
thin echogenic septa. It should not be confused with pathology.
,3. A child presents with a painless scrotal mass. Ultrasound shows a “bag of worms”
appearance. What is the diagnosis?
A. Hydrocele
B. Varicocele
C. Spermatocele
D. Testicular tumor
Answer: B. Varicocele
Rationale: Varicocele appears as multiple dilated veins in the pampiniform plexus, often
described as a “bag of worms.” It is more common on the left side.
4. Which measurement is used to diagnose developmental dysplasia of the hip on
ultrasound?
A. Alpha angle
B. Beta angle
C. Cartilage thickness
D. Joint space width
Answer: A. Alpha angle
Rationale: The alpha angle measures the bony acetabular roof. An alpha angle less than
60 degrees is consistent with hip dysplasia.
5. What is the sonographic appearance of a normal neonatal kidney?
A. Echogenic medullary pyramids
B. Hypoechoic cortex
C. Echogenic sinus
D. All of the above
Answer: D. All of the above
Rationale: The normal neonatal kidney has echogenic medullary pyramids, a hypoechoic
cortex, and an echogenic renal sinus.
,6. A child with recurrent urinary tract infections is evaluated. Ultrasound shows a dilated
ureter and renal pelvis. What is the most likely diagnosis?
A. Vesicoureteral reflux
B. Ureteropelvic junction obstruction
C. Ureterocele
D. Ectopic ureter
Answer: A. Vesicoureteral reflux
Rationale: Vesicoureteral reflux causes dilation of the ureter and renal pelvis due to
backward flow of urine.
7. Which ultrasound finding is characteristic of a choledochal cyst?
A. Cystic dilation of the common bile duct
B. Gallbladder wall thickening
C. Gallstones
D. Pericholecystic fluid
Answer: A. Cystic dilation of the common bile duct
Rationale: Choledochal cysts are congenital dilations of the biliary tree, most commonly
involving the common bile duct.
8. A neonate with bilious vomiting is evaluated. Ultrasound shows a “whirlpool sign.”
What is the most likely diagnosis?
A. Malrotation with volvulus
B. Pyloric stenosis
C. Intussusception
D. Duodenal atresia
Answer: A. Malrotation with volvulus
, Rationale: The whirlpool sign represents twisted mesentery and superior mesenteric vein
around the artery, indicating malrotation with volvulus.
9. Which sonographic finding is most specific for acute appendicitis in children?
A. Non-compressible appendix >6 mm
B. Periappendiceal fluid
C. Increased echogenicity of mesentery
D. Free air
Answer: A. Non-compressible appendix >6 mm
Rationale: A non-compressible appendix measuring greater than 6 mm in diameter is the
most specific sonographic finding for appendicitis.
10. A child with sickle cell disease presents with abdominal pain. Ultrasound shows
multiple gallstones. What is the most likely cause?
A. Pigment stones
B. Cholesterol stones
C. Calcium bilirubinate stones
D. Mixed stones
Answer: A. Pigment stones
Rationale: Children with sickle cell disease commonly develop pigment gallstones due to
chronic hemolysis.
11. Which ultrasound finding is characteristic of a normal neonatal adrenal gland?
A. Thin, echogenic gland
B. Thick, hypoechoic gland
C. Cystic gland
D. Calcified gland
Answer: A. Thin, echogenic gland
