OBGYN ARDMS – DAVIES EXAM
QUESTIONS AND ANSWERS 2026
1. When sonographers use the term gestational age, they mean:
A. Weeks or days since conception
B. weeks or days since fertilization
C. Weeks or days since implantation
D. Weeks or days since the first day of the last menstrual period
E. Weeks or days since the last day of the last menstrual period -
correct answer ✅D. Weeks or days since the first day of the last
menstrual period
2. Up to 10 weeks' gestational (menstrual) age, the mean diameter
normal gestational sac should grow approximately:
A. 0.5 mm per day
B. 1.0 mm per day
C. 2.0 mm per day
D. 3.0 mm per day
E. 4.0 mm per day -
correct answer ✅B. 1.0 mm per day
,OBGYN ARDMS – DAVIES EXAM
QUESTIONS AND ANSWERS 2026
3. A successful pregnancy outcome is associated with a yolk sac
that:
A. Occupies more than 30 % of gestational sac volume
B. Has a round shape
C. Measures less than 2 mm in diameter at 8-10 weeks
D. Measures greater than 6 mm in diameter
E. Has irregular echogenic borders -
correct answer ✅B. Has a round shape
4. Which sonographic finding is associated with abnormal
pregnancy?
A. Spherical gestational sac within the uterus
B. Double sac sign within an intrauterine gestational sac
C. oval gestational sac within the uterus
D. Defined double decidual ring around the intrauterine gestational
sac
E. Embryo with a calcified yolk sac -
correct answer ✅E. Embryo with a calcified yolk sac
,OBGYN ARDMS – DAVIES EXAM
QUESTIONS AND ANSWERS 2026
5. An incomplete abortion is defined as:
A. Spontaneous abortion with retained products of conception
B. Anembryonic abortion
C. Heterotopic pregnancy
D. Subchorionic hemorrhage
E. Ectopic pregnancy without bleeding -
correct answer ✅A. Spontaneous abortion with retained products
of conception
6. When does the trilaminar embryonic disc form?
A. During organogenesis
B. During implantation
C. During transit through the fallopian tube
D. During neurulation
E. During gastrulation -
correct answer ✅E. During gastrulation
, OBGYN ARDMS – DAVIES EXAM
QUESTIONS AND ANSWERS 2026
7. A patient presents with a positive pregnancy test and bright red
spotting, By dates she is 8-9 weeks.
What does this transverse image demonstrate?
A. Second gestational sac
B. An anembryonic pregnancy
C. Normal amnion
D. Subchorionic hemorrhage
E. Placental abruption -
correct answer ✅D. Subchorionic hemorrhage
8. What is being measured in the image in question 7?
A. Gestational sac
B. Biparietal diameter
C. Crown-rump length
D. Embryonic disc
E. Abdominal circumference -
correct answer ✅C. Crown-rump length
9. what is the arrow pointing to?
QUESTIONS AND ANSWERS 2026
1. When sonographers use the term gestational age, they mean:
A. Weeks or days since conception
B. weeks or days since fertilization
C. Weeks or days since implantation
D. Weeks or days since the first day of the last menstrual period
E. Weeks or days since the last day of the last menstrual period -
correct answer ✅D. Weeks or days since the first day of the last
menstrual period
2. Up to 10 weeks' gestational (menstrual) age, the mean diameter
normal gestational sac should grow approximately:
A. 0.5 mm per day
B. 1.0 mm per day
C. 2.0 mm per day
D. 3.0 mm per day
E. 4.0 mm per day -
correct answer ✅B. 1.0 mm per day
,OBGYN ARDMS – DAVIES EXAM
QUESTIONS AND ANSWERS 2026
3. A successful pregnancy outcome is associated with a yolk sac
that:
A. Occupies more than 30 % of gestational sac volume
B. Has a round shape
C. Measures less than 2 mm in diameter at 8-10 weeks
D. Measures greater than 6 mm in diameter
E. Has irregular echogenic borders -
correct answer ✅B. Has a round shape
4. Which sonographic finding is associated with abnormal
pregnancy?
A. Spherical gestational sac within the uterus
B. Double sac sign within an intrauterine gestational sac
C. oval gestational sac within the uterus
D. Defined double decidual ring around the intrauterine gestational
sac
E. Embryo with a calcified yolk sac -
correct answer ✅E. Embryo with a calcified yolk sac
,OBGYN ARDMS – DAVIES EXAM
QUESTIONS AND ANSWERS 2026
5. An incomplete abortion is defined as:
A. Spontaneous abortion with retained products of conception
B. Anembryonic abortion
C. Heterotopic pregnancy
D. Subchorionic hemorrhage
E. Ectopic pregnancy without bleeding -
correct answer ✅A. Spontaneous abortion with retained products
of conception
6. When does the trilaminar embryonic disc form?
A. During organogenesis
B. During implantation
C. During transit through the fallopian tube
D. During neurulation
E. During gastrulation -
correct answer ✅E. During gastrulation
, OBGYN ARDMS – DAVIES EXAM
QUESTIONS AND ANSWERS 2026
7. A patient presents with a positive pregnancy test and bright red
spotting, By dates she is 8-9 weeks.
What does this transverse image demonstrate?
A. Second gestational sac
B. An anembryonic pregnancy
C. Normal amnion
D. Subchorionic hemorrhage
E. Placental abruption -
correct answer ✅D. Subchorionic hemorrhage
8. What is being measured in the image in question 7?
A. Gestational sac
B. Biparietal diameter
C. Crown-rump length
D. Embryonic disc
E. Abdominal circumference -
correct answer ✅C. Crown-rump length
9. what is the arrow pointing to?
