Maryland Diagnostic Medical
Sonographer Certification Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. Which organization is the primary certifying body that awards the
Registered Diagnostic Medical Sonographer (RDMS) credential used in
diagnostic ultrasound practice?
A. American College of Radiology
B. American Registry for Diagnostic Medical Sonography
C. National Board of Medical Imaging
D. Commission on Accreditation of Allied Health Programs
Answer: B
The RDMS credential is administered by the American Registry for
Diagnostic Medical Sonography (ARDMS), which is the recognized
body responsible for certifying sonographers through standardized
examinations and prerequisites.
2. What is the first mandatory examination required for all candidates
seeking RDMS certification?
A. Obstetrics and Gynecology specialty exam
B. Sonography Principles and Instrumentation (SPI) exam
, C. Abdomen specialty exam
D. Vascular Technology exam
Answer: B
All RDMS candidates must first pass the SPI examination, which
evaluates foundational knowledge in ultrasound physics and
instrumentation before specialty exams can be completed.
3. Which of the following is NOT a valid RDMS specialty examination?
A. Breast Sonography
B. Pediatric Sonography
C. Cardiac Echocardiography
D. Obstetrics and Gynecology
Answer: C
Cardiac echocardiography belongs to the RDCS credential pathway
rather than RDMS, which focuses on general diagnostic medical
sonography specialties such as abdomen and OB/GYN.
4. How long do candidates have to pass both SPI and a specialty exam for
RDMS certification?
A. 2 years
B. 3 years
C. 5 years
D. 10 years
Answer: C
ARDMS requires candidates to pass both the SPI and specialty
examination within a five-year window to ensure current competency
standards are met.
5. What is the minimum clinical experience requirement for many RDMS
eligibility pathways?
A. 6 months full-time ultrasound experience
B. 12 months full-time clinical ultrasound experience
, C. 24 months hospital internship only
D. No clinical experience required
Answer: B
Most RDMS prerequisite pathways require at least 12 months of full-
time clinical ultrasound or vascular experience to ensure practical
competency in patient care settings.
6. Which academic background is commonly required as part of RDMS
eligibility prerequisites?
A. Any high school diploma only
B. Two-year allied health education program
C. Law degree
D. Medical doctorate only
Answer: B
ARDMS requires completion of a two-year allied health education
program in a patient-care-related field such as sonography or
radiologic technology.
7. What is the full-time definition used for clinical ultrasound experience
in RDMS prerequisites?
A. 20 hours per week
B. 25 hours per week
C. 30 hours per week
D. 35 hours per week
Answer: D
Full-time clinical ultrasound experience is defined as at least 35 hours
per week over a standard work year in ARDMS eligibility criteria.
8. Which of the following specialties is paired with the RDMS credential
rather than RDCS?
A. Adult Echocardiography
B. Pediatric Echocardiography
Sonographer Certification Exam Practice
Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. Which organization is the primary certifying body that awards the
Registered Diagnostic Medical Sonographer (RDMS) credential used in
diagnostic ultrasound practice?
A. American College of Radiology
B. American Registry for Diagnostic Medical Sonography
C. National Board of Medical Imaging
D. Commission on Accreditation of Allied Health Programs
Answer: B
The RDMS credential is administered by the American Registry for
Diagnostic Medical Sonography (ARDMS), which is the recognized
body responsible for certifying sonographers through standardized
examinations and prerequisites.
2. What is the first mandatory examination required for all candidates
seeking RDMS certification?
A. Obstetrics and Gynecology specialty exam
B. Sonography Principles and Instrumentation (SPI) exam
, C. Abdomen specialty exam
D. Vascular Technology exam
Answer: B
All RDMS candidates must first pass the SPI examination, which
evaluates foundational knowledge in ultrasound physics and
instrumentation before specialty exams can be completed.
3. Which of the following is NOT a valid RDMS specialty examination?
A. Breast Sonography
B. Pediatric Sonography
C. Cardiac Echocardiography
D. Obstetrics and Gynecology
Answer: C
Cardiac echocardiography belongs to the RDCS credential pathway
rather than RDMS, which focuses on general diagnostic medical
sonography specialties such as abdomen and OB/GYN.
4. How long do candidates have to pass both SPI and a specialty exam for
RDMS certification?
A. 2 years
B. 3 years
C. 5 years
D. 10 years
Answer: C
ARDMS requires candidates to pass both the SPI and specialty
examination within a five-year window to ensure current competency
standards are met.
5. What is the minimum clinical experience requirement for many RDMS
eligibility pathways?
A. 6 months full-time ultrasound experience
B. 12 months full-time clinical ultrasound experience
, C. 24 months hospital internship only
D. No clinical experience required
Answer: B
Most RDMS prerequisite pathways require at least 12 months of full-
time clinical ultrasound or vascular experience to ensure practical
competency in patient care settings.
6. Which academic background is commonly required as part of RDMS
eligibility prerequisites?
A. Any high school diploma only
B. Two-year allied health education program
C. Law degree
D. Medical doctorate only
Answer: B
ARDMS requires completion of a two-year allied health education
program in a patient-care-related field such as sonography or
radiologic technology.
7. What is the full-time definition used for clinical ultrasound experience
in RDMS prerequisites?
A. 20 hours per week
B. 25 hours per week
C. 30 hours per week
D. 35 hours per week
Answer: D
Full-time clinical ultrasound experience is defined as at least 35 hours
per week over a standard work year in ARDMS eligibility criteria.
8. Which of the following specialties is paired with the RDMS credential
rather than RDCS?
A. Adult Echocardiography
B. Pediatric Echocardiography
