NORTH CAROLINA ULTRASOUND TECHNICIAN CERTIFICATION –QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026
Q&A | INSTANT DOWNLOAD PDF.
CORE DOMAINS
- Ultrasound Physics, Instrumentation, and Artifacts
- Abdominal and Superficial Structures Sonography
- Obstetrics and Gynecology Sonography
- Vascular Technology and Hemodynamics
- Patient Care, Safety, and Communication
- North Carolina Regulatory Compliance, Legal Issues, and Medical Ethics
- Acoustic Output, Bioeffects, and Quality Assurance
INTRODUCTION
The purpose of this comprehensive assessment is to evaluate the foundational
knowledge, practical skills, and clinical readiness of candidates seeking the North
Carolina Ultrasound Technician Certification. This exam measures proficiency across
core sonographic disciplines, including physics, abdominal, obstetrical, gynecological,
and vascular specialties. Consisting of highly structured multiple-choice and scenario-
,based questions, the assessment emphasizes real-world application, critical
diagnostic decision-making, and adherence to safety and ethical standards.
Candidates are expected to demonstrate clinical judgment, recognize sonographic
pathology, apply ergonomic principles, and understand North Carolina legal statutes
governing diagnostic ultrasound practice to ensure high-quality patient care.
SECTION ONE: QUESTIONS 1–100
Question 1
Which of the following ultrasound transducer frequencies would provide the optimal
balance of resolution and penetration for a deep abdominal ultrasound examination
on an obese patient?
A. 12 MHz linear array
B. 7.5 MHz phased array
C. 3.5 MHz curved linear array
D. 2.0 MHz vector array
🟢 C. 3.5 MHz curved linear array
,🔴 RATIONALE: Lower frequencies (such as 3.5 MHz) provide the necessary
penetration to image structures deep within the abdomen, especially in larger
patients. Curved linear arrays offer a wide field of view suitable for abdominal
anatomy, balancing lateral resolution and depth penetration. High frequencies like 12
MHz attenuate too quickly to view deep structures.
Question 2
During an obstetric ultrasound, the sonographer notices the thermal index (TI) is
elevated above 1.0. According to the ALARA principle and safety guidelines, what is
the most appropriate initial action?
A. Immediately terminate the examination.
B. Decrease the output power and utilize receiver gain instead.
C. Increase the pulse repetition frequency (PRF) to complete the scan faster.
D. Switch from B-mode imaging to continuous wave Doppler.
🟢 B. Decrease the output power and utilize receiver gain instead.
🔴 RATIONALE: The ALARA (As Low As Reasonably Achievable) principle dictates
minimizing acoustic output power to reduce the risk of bioeffects. Lowering output
, power directly decreases the thermal index. Adjusting the receiver gain can amplify
the returning signals without increasing acoustic exposure to the fetus.
Question 3
A patient presents to a North Carolina emergency department with acute right upper
quadrant pain, fever, and a elevated white blood cell count. Ultrasound reveals a
distended gallbladder with a wall thickness of 5 mm, pericholecystic fluid, and positive
sonographic Murphy's sign. What is the most likely diagnosis?
A. Chronic cholecystitis
B. Acute cholecystitis
C. Adenomyomatosis
D. Gallbladder carcinoma
🟢 B. Acute cholecystitis
🔴 RATIONALE: The combination of gallbladder wall thickening (greater than 3 mm),
pericholecystic fluid, distension, and a positive sonographic Murphy's sign (maximal
tenderness elicited by direct pressure over the gallbladder) in an acute clinical setting
is highly diagnostic of acute cholecystitis.
Question 4
AND CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026
Q&A | INSTANT DOWNLOAD PDF.
CORE DOMAINS
- Ultrasound Physics, Instrumentation, and Artifacts
- Abdominal and Superficial Structures Sonography
- Obstetrics and Gynecology Sonography
- Vascular Technology and Hemodynamics
- Patient Care, Safety, and Communication
- North Carolina Regulatory Compliance, Legal Issues, and Medical Ethics
- Acoustic Output, Bioeffects, and Quality Assurance
INTRODUCTION
The purpose of this comprehensive assessment is to evaluate the foundational
knowledge, practical skills, and clinical readiness of candidates seeking the North
Carolina Ultrasound Technician Certification. This exam measures proficiency across
core sonographic disciplines, including physics, abdominal, obstetrical, gynecological,
and vascular specialties. Consisting of highly structured multiple-choice and scenario-
,based questions, the assessment emphasizes real-world application, critical
diagnostic decision-making, and adherence to safety and ethical standards.
Candidates are expected to demonstrate clinical judgment, recognize sonographic
pathology, apply ergonomic principles, and understand North Carolina legal statutes
governing diagnostic ultrasound practice to ensure high-quality patient care.
SECTION ONE: QUESTIONS 1–100
Question 1
Which of the following ultrasound transducer frequencies would provide the optimal
balance of resolution and penetration for a deep abdominal ultrasound examination
on an obese patient?
A. 12 MHz linear array
B. 7.5 MHz phased array
C. 3.5 MHz curved linear array
D. 2.0 MHz vector array
🟢 C. 3.5 MHz curved linear array
,🔴 RATIONALE: Lower frequencies (such as 3.5 MHz) provide the necessary
penetration to image structures deep within the abdomen, especially in larger
patients. Curved linear arrays offer a wide field of view suitable for abdominal
anatomy, balancing lateral resolution and depth penetration. High frequencies like 12
MHz attenuate too quickly to view deep structures.
Question 2
During an obstetric ultrasound, the sonographer notices the thermal index (TI) is
elevated above 1.0. According to the ALARA principle and safety guidelines, what is
the most appropriate initial action?
A. Immediately terminate the examination.
B. Decrease the output power and utilize receiver gain instead.
C. Increase the pulse repetition frequency (PRF) to complete the scan faster.
D. Switch from B-mode imaging to continuous wave Doppler.
🟢 B. Decrease the output power and utilize receiver gain instead.
🔴 RATIONALE: The ALARA (As Low As Reasonably Achievable) principle dictates
minimizing acoustic output power to reduce the risk of bioeffects. Lowering output
, power directly decreases the thermal index. Adjusting the receiver gain can amplify
the returning signals without increasing acoustic exposure to the fetus.
Question 3
A patient presents to a North Carolina emergency department with acute right upper
quadrant pain, fever, and a elevated white blood cell count. Ultrasound reveals a
distended gallbladder with a wall thickness of 5 mm, pericholecystic fluid, and positive
sonographic Murphy's sign. What is the most likely diagnosis?
A. Chronic cholecystitis
B. Acute cholecystitis
C. Adenomyomatosis
D. Gallbladder carcinoma
🟢 B. Acute cholecystitis
🔴 RATIONALE: The combination of gallbladder wall thickening (greater than 3 mm),
pericholecystic fluid, distension, and a positive sonographic Murphy's sign (maximal
tenderness elicited by direct pressure over the gallbladder) in an acute clinical setting
is highly diagnostic of acute cholecystitis.
Question 4
