ARDMS RDMS Certified Official Practice Test AB-Abdomen - Sep-2025
Ace ARDMS AB-Abdomen Certification with Actual Questions Sep 24, 2025 Updated
NEW QUESTION # 25
Which patient maneuver would best aid in identifying the pathology demonstrated in this image?
- A. Turn from side to side
- B. Drink water
- C. Stand upright
- D. Breathe quietly
Answer: A
Explanation:
The ultrasound image demonstrates a classic example of ascites, shown by the anechoic (dark) fluid located between bowel loops or surrounding abdominal organs. In this case, there appears to be a small fluid collection in the peritoneal cavity.
One of the key maneuvers used to differentiate free fluid (such as ascites) from loculated fluid or other structures is to reposition the patient. Asking the patient to "turn from side to side" (Option D) can help in assessing whether the fluid shifts position - a hallmark feature of free intraperitoneal fluid. This positional change is highly useful in confirming the diagnosis and distinguishing ascites from other potential mimics (e.
g., cystic masses, lymphoceles, or bowel wall thickening).
In contrast:
* Drinking water (A) is often used in imaging the urinary bladder or gastrointestinal tract but not for fluid characterization.
* Standing upright (B) may shift fluid but is less practical during real-time ultrasound.
* Breathing quietly (C) doesn't significantly aid in visualizing peritoneal fluid mobility.
References:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound, 5th ed. Elsevier; 2017.
Hagen-Ansert SL. Textbook of Diagnostic Sonography, 8th ed. Elsevier; 2017.
AIUM Practice Parameter for the Performance of Diagnostic and Screening Ultrasound Examinations of the Abdomen and/or Retroperitoneum (2020).
NEW QUESTION # 26
A patient with hepatocellular carcinoma presents for a paracentesis. Which lab value is the most pertinent to the procedure?
- A. Alpha fetoprotein
- B. Total bilirubin
- C. Alanine aminotransferase
- D. International normalized ratio
Answer: D
Explanation:
Before performing a paracentesis, assessment of the patient's coagulation status is crucial to minimize bleeding risk. The International Normalized Ratio (INR) is the standard lab value used to assess coagulation.
Elevated INR may increase the risk of bleeding complications during the procedure. ALT, AFP, and bilirubin levels evaluate liver function or cancer progression but are not directly relevant to bleeding risk for this procedure.
As per AASLD and SIR guidelines:
"An INR and platelet count should be evaluated before paracentesis to assess bleeding risk. Minor elevations in INR (<1.5) may not contraindicate the procedure." (AASLD Practice Guidance, 2021; SIR Consensus Guidelines, 2019).
Reference:
American Association for the Study of Liver Diseases (AASLD), Management of Ascites, 2021.
Society of Interventional Radiology (SIR) Consensus Guidelines for Coagulation Parameters in Image- Guided Procedures, 2019.
NEW QUESTION # 27
Which condition is most consistent with the findings in the image below?
- A. Adenomyomatosis
- B. Porcelain gallbladder
- C. Gangrenous cholecystitis
- D. Emphysematous cholecystitis
Answer: D
Explanation:
The ultrasound image shows echogenic foci with dirty shadowing and reverberation artifacts within the gallbladder wall and lumen. These features are characteristic of emphysematous cholecystitis, a severe, life- threatening variant of acute cholecystitis caused by gas-forming organisms (e.g., Clostridium or E. coli) infecting the gallbladder wall.
Sonographic features of emphysematous cholecystitis:
* Echogenic gas within the gallbladder wall or lumen
* Reverberation or "dirty" shadowing artifacts
* May show intramural gas bubbles or "ring-down" artifact
* Often seen in diabetic or immunocompromised patients
* No gallstones may be present ("acalculous cholecystitis")
Clinical context:
* More common in elderly men and diabetics
* Presents with right upper quadrant pain, fever, and leukocytosis
* Surgical emergency due to risk of perforation and sepsis
Differentiation from other options:
* A. Adenomyomatosis: Involves gallbladder wall thickening with "comet tail" artifacts due to Rokitansky-Aschoff sinuses, not intramural gas.
* B. Porcelain gallbladder: Shows curvilinear calcification of the gallbladder wall - dense echogenic rim with posterior shadowing.
* C. Gangrenous cholecystitis: May show wall irregularity, intraluminal membranes, and absence of Doppler flow but lacks intramural gas.
References:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound. 5th Edition. Elsevier, 2018.
Chapter: Gallbladder and Biliary System, pp. 155-160.
American College of Radiology (ACR). Appropriateness Criteria for Right Upper Quadrant Pain, 2022.
Radiopaedia.org. Emphysematous cholecystitis: https://radiopaedia.org/articles/emphysematous-cholecystitis
NEW QUESTION # 28
What is the most common cause of nutcracker syndrome?
- A. Compression of left renal vein between inferior vena cava and aorta
- B. Compression of left renal vein between superior mesenteric artery and aorta
- C. Compression of right renal vein between inferior vena cava and aorta
- D. Compression of right renal vein between superior mesenteric artery and aorta
Answer: B
Explanation:
Nutcracker syndrome results from compression of the left renal vein between the superior mesenteric artery (SMA) and the aorta. This can cause hematuria, flank pain, and pelvic congestion due to impaired venous drainage.
According to Zwiebel's Introduction to Vascular Ultrasound:
"In nutcracker syndrome, the left renal vein is compressed between the aorta and SMA, resulting in venous hypertension." Reference:
Zwiebel WJ, Pellerito JS. Introduction to Vascular Ultrasound. 6th ed. Elsevier, 2019.
AIUM Practice Parameter for Abdominal Vascular Ultrasound, 2020.
-
NEW QUESTION # 29
Which portion of the renal arterial vasculature is indicated by the arrow in this image?
- A. Interlobar
- B. Interlobular
- C. Arcuate
- D. Segmental
Answer: C
Explanation:
The arrow in this Doppler ultrasound image of the kidney is pointing to vessels located at the corticomedullary junction, arching over the bases of the medullary pyramids. This vascular pattern is characteristic of the arcuate arteries.
Renal arterial anatomy follows a specific branching hierarchy:
* Segmental arteries branch off the main renal artery.
* Interlobar arteries travel between renal pyramids.
* Arcuate arteries arch over the base of the pyramids at the corticomedullary junction.
* Interlobular arteries extend into the cortex from the arcuate arteries.
Key characteristics of arcuate arteries on ultrasound:
* Located at the corticomedullary junction (between the medullary pyramids and renal cortex).
* Run perpendicular to the long axis of the kidney, often forming an arching or curving pattern.
* Commonly targeted in Doppler studies to assess resistive index (RI) in renal perfusion studies.
Comparison of answer choices:
* A. Interlobular arteries are smaller vessels that extend perpendicularly from the arcuate arteries into the cortex-not visible at this level.
* B. Arcuate - Correct. The arrow is indicating these vessels arching over the medullary pyramids.
* C. Segmental arteries are larger and deeper, branching off the renal artery near the hilum.
* D. Interlobar arteries course between the pyramids but do not arch along their base.
References:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound, 5th ed. Elsevier; 2017.
Hagen-Ansert SL. Textbook of Diagnostic Sonography, 8th ed. Elsevier; 2017.
AIUM Practice Parameter for the Performance of a Renal Artery Duplex Sonogram (2020).
NEW QUESTION # 30
Which of the following is the most common symptom of cholelithiasis?
- A. Flank pain
- B. Jaundice
- C. Hemoptysis
- D. Biliary colic
Answer: D
Explanation:
The most common symptom of cholelithiasis (gallstones) is biliary colic, characterized by intermittent right upper quadrant or epigastric pain often triggered by fatty meals. Jaundice occurs in complications such as choledocholithiasis.
According to Rumack's Diagnostic Ultrasound:
"Gallstones may cause biliary colic - episodic upper abdominal pain often related to food intake." Reference:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound. 5th ed. Elsevier, 2017.
American College of Gastroenterology (ACG) Guidelines for Gallstone Disease, 2013.
-
NEW QUESTION # 31
Which condition is demonstrated in this image of the groin?
- A. Indirect hernia
- B. Orchiectomy
- C. Testicular rupture
- D. Hematocele
Answer: A
Explanation:
The ultrasound image demonstrates bowel loops with peristalsis visualized within the inguinal canal, which is diagnostic of an inguinal hernia-more specifically, an indirect inguinal hernia. Indirect hernias pass through the deep inguinal ring and may extend into the scrotum, appearing sonographically as bowel-containing masses adjacent to or within the scrotal sac. Peristaltic motion confirms the presence of viable bowel content.
This finding is typical in indirect inguinal hernias, which are more common in males and often congenital due to a patent processus vaginalis. The herniated bowel can be traced through the inguinal canal, as seen in this image.
Comparison of answer choices:
* A. Hematocele presents as a complex fluid collection surrounding the testis, often due to trauma-no complex fluid or trauma is apparent here.
* B. Testicular rupture shows discontinuity of the tunica albuginea and irregular testicular contour-none of which is seen.
* C. Orchiectomy would show an absent testis-this is not the case here.
* D. Indirect hernia is correct. The presence of bowel with peristalsis in the inguinal canal is diagnostic.
References:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound, 5th ed. Elsevier; 2017.
AIUM Practice Parameter for the Performance of Scrotal Ultrasound Examinations (2021).
Dogra VS, Gottlieb RH, Rubens DJ, Oka M. Sonography of the scrotum. Radiology. 2003;227(1):18-36
NEW QUESTION # 32
During a renal artery Doppler study, which vessel should also be sampled to verify patency?
- A. Portal vein
- B. Main renal vein
- C. Iliac vein
- D. Inferior vena cava
Answer: B
Explanation:
The main renal vein should be assessed in addition to the renal arteries during renal Doppler exams. Venous thrombosis may coexist with arterial abnormalities and can impact renal perfusion. Evaluation of both arterial inflow and venous outflow ensures a comprehensive assessment of renal vascular patency.
According to Zwiebel's Introduction to Vascular Ultrasound:
"Renal vein assessment should be performed during renal artery Doppler studies to exclude venous thrombosis or outflow obstruction." Reference:
Zwiebel WJ, Pellerito JS. Introduction to Vascular Ultrasound. 6th ed. Elsevier, 2019.
AIUM Practice Parameter for Renal Artery Duplex Sonography, 2020.
-
NEW QUESTION # 33
Which parameter is most likely increased distal to a renal artery stenosis?
- A. Resistive index
- B. Acceleration time
- C. Pulsatility index
- D. Spectral broadening
Answer: B
Explanation:
Downstream from a significant renal artery stenosis, the acceleration time is prolonged due to delayed systolic upstroke ("tardus-parvus waveform"). This is a sensitive Doppler parameter for detecting hemodynamically significant stenosis. Spectral broadening usually occurs at the stenotic site, not distal to it.
According to Zwiebel's Introduction to Vascular Ultrasound:
"Prolonged acceleration time and reduced acceleration index characterize tardus-parvus waveforms distal to renal artery stenosis." Reference:
Zwiebel WJ, Pellerito JS. Introduction to Vascular Ultrasound. 6th ed. Elsevier, 2019.
AIUM Practice Parameter for Renal Artery Duplex Doppler Ultrasound, 2020.
NEW QUESTION # 34
Which anatomical area of the male reproductive system is demonstrated in this endorectal image?
- A. Seminal vesicles
- B. Urethra
- C. Prostate base
- D. Ejaculatory ducts
Answer: A
Explanation:
The ultrasound image shown is a transverse endorectal (transrectal) ultrasound, commonly used to evaluate the prostate and adjacent structures. The two hypoechoic (dark) oval-shaped structures seen superior and posterior to the prostate are characteristic of the seminal vesicles.
The seminal vesicles are paired, elongated glands located superior and posterior to the base of the prostate and are best visualized in transverse planes on endorectal imaging. They appear as hypoechoic or anechoic structures with internal septations, depending on the degree of fluid content.
In contrast:
* The urethra appears as a central echogenic linear structure within the prostate.
* The prostate base is more inferior in the scan and is visualized just above the urethra.
* The ejaculatory ducts are usually not as prominently visualized and are located medial to the seminal vesicles, entering the prostate near the verumontanum.
This image most clearly demonstrates the bilateral seminal vesicles.
References:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound, 5th ed. Elsevier; 2017.
ACR-AIUM-SRU Practice Parameter for the Performance of an Ultrasound Examination of the Prostate (2021).
Hagen-Ansert SL. Textbook of Diagnostic Sonography, 8th ed. Elsevier; 2017.
NEW QUESTION # 35
Based on this image, what is the most likely clinical indication for the examination?
- A. Red currant jelly stools
- B. Abnormal prenatal ultrasound
- C. Neonatal hyperbilirubinemia
- D. Projectile vomiting
Answer: D
Explanation:
The ultrasound image demonstrates findings consistent with hypertrophic pyloric stenosis (HPS). This condition typically affects infants between 2 and 8 weeks of age and presents clinically with non-bilious projectile vomiting, weight loss, and dehydration.
In the ultrasound image, the classic "target" or "donut" sign can be seen in the transverse view of the hypertrophied pyloric muscle. Key sonographic criteria for HPS include:
* Pyloric muscle thickness #3 mm
* Pyloric channel length #15-18 mm
This imaging appearance strongly correlates with the clinical presentation of projectile vomiting (Choice D), which is the hallmark symptom of HPS.
Comparison of answer choices:
* A. Abnormal prenatal ultrasound (Choice A) is not typically associated with HPS, which develops postnatally.
* B. Neonatal hyperbilirubinemia (Choice B) is not an indication for a pyloric ultrasound and affects liver
/biliary imaging.
* C. Red currant jelly stools (Choice C) are indicative of intussusception, not HPS.
* D. Projectile vomiting (Choice D) is the most common clinical indication leading to an ultrasound exam that reveals HPS.
References:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound, 5th ed. Elsevier; 2017.
AIUM Practice Parameter for the Performance of Ultrasound of the Pyloric Region in Infants (2014).
Hernanz-Schulman M. Infantile hypertrophic pyloric stenosis. Radiology. 2003;227(2):319-331.
NEW QUESTION # 36
Which sonographic appearance of the bile ducts is demonstrated in this image?
- A. Dilated common bile
- B. Dilated common hepatic
- C. Normal intrahepatic
- D. Dilated intrahepatic
Answer: D
Explanation:
The image shows a transverse view of the left lobe of the liver with the portal triads clearly visible. The
"parallel channel" or "double barrel" sign is observed-where dilated intrahepatic bile ducts run alongside the portal veins, creating a characteristic sonographic pattern of paired anechoic (black) tubular structures.
This sonographic feature is diagnostic for dilated intrahepatic bile ducts and is typically seen in obstructive jaundice or biliary obstruction from conditions such as:
* Choledocholithiasis (stone in the common bile duct)
* Stricture or mass compressing the bile ducts
* Cholangiocarcinoma
The intrahepatic bile ducts normally are too small to visualize clearly unless dilated. Their dilation gives the liver a "too many tubes" appearance, where bile ducts become as prominent as the portal veins.
Comparison of answer choices:
* A. Normal intrahepatic ducts are not usually seen this clearly or prominently on ultrasound.
* B. Dilated intrahepatic - Correct. The parallel channel sign supports this diagnosis.
* C. Dilated common bile duct would be visualized extrahepatically, typically anterior to the portal vein near the head of the pancreas.
* D. Dilated common hepatic duct is also extrahepatic and seen in the porta hepatis, not within the liver parenchyma.
References:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound, 5th ed. Elsevier; 2017.
Hagen-Ansert SL. Textbook of Diagnostic Sonography, 8th ed. Elsevier; 2017.
Taylor KJW, Burns PN, Wells PNT. Clinical Applications of Doppler Ultrasound. Raven Press; 1990.
NEW QUESTION # 37
Which condition puts the patient at greatest risk for a hematoma as a result of biopsy?
- A. Hypertension
- B. Acute renal failure
- C. Infection
- D. Liver disease
Answer: D
Explanation:
Patients with liver disease often have coagulopathy due to impaired synthesis of clotting factors. This places them at greater risk for bleeding or hematoma formation after biopsy. While hypertension may increase bleeding risk slightly, liver disease presents a significantly higher risk due to impaired coagulation.
According to the Society of Interventional Radiology (SIR) guidelines:
"Liver dysfunction is a significant risk factor for post-biopsy hemorrhage due to associated coagulopathy." Reference:
SIR Consensus Guidelines for Coagulation Parameters in Image-Guided Procedures, 2019.
American Association for the Study of Liver Diseases (AASLD), Practice Guidance, 2021.
-
NEW QUESTION # 38
Which portion of the biliary system is last to become dilated with biliary obstruction at the ampulla of Vater?
- A. Cystic duct
- B. Common bile duct
- C. Common hepatic duct
- D. Peripheral bile ducts
Answer: D
Explanation:
In biliary obstruction (such as at the ampulla of Vater), dilation begins proximally and progresses peripherally. The intrahepatic peripheral bile ducts are the last to dilate because backpressure takes time to propagate. Early dilation is typically seen in the common bile duct and common hepatic duct.
According to Rumack's Diagnostic Ultrasound:
"The intrahepatic peripheral bile ducts dilate last in the setting of progressive biliary obstruction." Reference:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound. 5th ed. Elsevier, 2017.
AIUM Practice Parameter for the Performance of Abdominal Ultrasound, 2020.
-
NEW QUESTION # 39
A patient presents with ampulla of Vater obstruction, distention of the gallbladder, and painless jaundice.
Which condition is most likely associated with these findings?
- A. Courvoisier sign
- B. Choledochal cyst
- C. Porcelain gallbladder
- D. Mirizzi syndrome
Answer: A
Explanation:
Courvoisier sign describes the clinical finding of painless jaundice combined with a palpable, distended gallbladder. This typically results from obstruction at the distal common bile duct, often due to pancreatic head carcinoma or cholangiocarcinoma, leading to bile accumulation and gallbladder distention. In contrast, Mirizzi syndrome involves compression of the common hepatic duct by an impacted stone in the cystic duct.
According to Rumack's Diagnostic Ultrasound and standard clinical references:
"Courvoisier sign refers to a palpable, enlarged gallbladder due to obstruction of the distal bile duct, often from malignancy." Reference:
Rumack CM, Wilson SR, Charboneau JW, Levine D. Diagnostic Ultrasound. 5th ed. Elsevier, 2017.
Moore KL. Clinically Oriented Anatomy. 8th ed. Wolters Kluwer, 2018.
-
NEW QUESTION # 40
Which outcome would be present if the sample volume gate is larger than the examined vessel?
- A. Spike turbulence
- B. Aliasing
- C. Indeterminate flow direction
- D. Spectral noise
Answer: D
Explanation:
When the sample volume (gate) is too large, it captures signals from both the vessel and surrounding tissues or adjacent flows. This leads to a broadening of the spectral waveform and produces "spectral noise" or
"spectral broadening," reducing the accuracy of velocity measurements and waveform analysis. Aliasing results from high velocity relative to the Nyquist limit, not from gate size.
According to Zwiebel's Introduction to Vascular Ultrasound:
"Increasing the sample volume beyond the vessel size causes spectral broadening, resulting in spectral noise and inaccurate Doppler measurements." Reference:
Zwiebel WJ, Pellerito JS. Introduction to Vascular Ultrasound. 6th ed. Elsevier, 2019.
AIUM Practice Parameter for Spectral Doppler Ultrasound, 2021.
-
NEW QUESTION # 41
......
Try Free and Start Using Realistic Verified AB-Abdomen Dumps Instantly.: https://actualtests.troytecdumps.com/AB-Abdomen-troytec-exam-dumps.html