ISUOG BT Flex 2022: Week 1 assessment Survey

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* 3. What are the frequencies used in medical ultrasound ?

a)3Mhz to 5Mhz

b)2 Mhz to 8Mhz

c)1 Mhz to 20 Mhz

5Mhz to 10Mhz

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* 4. What is the difference between read zoom and write zoom?

Contrary to write zoom, the framerate (Hz) to build up the image is increased with read zoom

Contrary to read zoom, the framerate (Hz) to build up the image is increased with write zoom

Contrary to write zoom, the sector width of the image is adjusted with read zoom

Both read and write zoom provide equal quality images

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* 5. Which of the following statements is true regarding the assessment of the number of fetuses in the uterus?

Assessing the number of fetuses requires a single sweep from the cervix to the uterine fundus

Assessing the number of fetuses requires a single sweep transversely across the uterus

Assessing the number of fetuses is based around recognition of two fetal heart beats

Assessing the number of fetuses involves systematic assessment in both longitudinal and transverse planes

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* 6. Measurement of an abdominal circumference (AC) section which includes a long length of the umbilical vein is likely to be:

An overestimate of the true abdominal circumference AC

An underestimate of the true abdominal circumference (AC)

A correct estimate of the true abdominal circumference (AC)

An acceptable estimate of the true abdominal circumference (AC)

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* 7. For informed consent to be achieved, both oral and written acceptance of the examination is mandatory.

True

False

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* 8. Which feature is diagnostic of a missed miscarriage on a follow-up ultrasound scan?

No embryo with fetal heart activity >7 days after a scan that showed a gestational sac without a yolk sac

No embryo with fetal heart activity >11 days after a scan that showed a gestational sac with a yolk sac

No embryo with fetal heart activity 14 days after a scan in which an embryo was visualised

MSD less than doubled 7 days after scan in which empty sac with MSD <12mm was see

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* 9. Which imaging parameter changes when you reduce the emitted power of ultrasound?

The depth is reduced

The gain is reduced

The framerate (HZ) required to build up the image is reduced

The mechanical index is reduced

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* 10. Regarding an intrauterine gestation sac, which of the following is correct?

It is visible at 6 weeks gestation

It is usually seen within the endometrial midline of the uterus

It grows approximately 1mm/ day

It is measured in 2 orthogonal planes to calculate the MSD (mean san diameter)

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* 11. A normal cord insertion visible with ultrasound at 12 weeks of gestation excludes which of the following?

Ectopia cordis

Gastroschisis

Megacystis

Omphalocele

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* 12. A Doppler shift will occur if both the sound source and the reflector are moving towards each other.

True

False

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* 13. Which of the following statements about placenta previa is true?

Assessment of placenta previa should include a TV scan if the placenta is posterior

Placenta previa is defined through ultrasound examination at 12 weeks’ gestation

Placenta previa is defined by ultrasound examination at 34 weeks’ gestation

Placenta previa can be categorised as simple / complex subgroups

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* 14. A discrepancy between the gestational age equivalents of the head circumference (HC) and femur length (FL) could indicate:

Down’s syndrome

Microcephaly

Poor technique

All of the above

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* 15. What will identifying the normal appearances of the choroid plexus at 12 weeks exclude?

Agenesis of the corpus callosum

Alobar holoprosencephaly

Anencephaly

Spina bifida

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* 16. For transvaginal measurement of cervical length the probe is placed:

In the posterior fornix

In the anterior fornix

Against the cervix with pressure applied for good visualisation

Against the cervix without undue pressure applied

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* 17. What is the effect of the amplitude of the ultrasound waveform?

It determines the energy of the emitted ultrasound

It determines the variations in the grey scale of the image

A high amplitude provide greater penetration compared to a low amplitude

A high amplitude provides less penetration compared to a low amplitude

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* 18. A transvaginal cervical length measurement of 22 mm is noted during a routine 19 week scan of an asymptomatic woman. Vaginal progesterone would reduce her risk of preterm labour.

True

False

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* 19. A homogeneous mixed echogenic pattern would be consistent with:

Blood

Dermoid cyst

Follicular fluid

2nd trimester amniotic fluid

ISUOG BT Flex 2022: Week 1 assessment

Thank you for completing week 1 of ISUOG's BT Flex program.

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* 1. Name

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* 2. Email Address

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* 3. What are the frequencies used in medical ultrasound ?

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* 4. What is the difference between read zoom and write zoom?

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* 5. Which of the following statements is true regarding the assessment of the number of fetuses in the uterus?

Question Title

* 6. Measurement of an abdominal circumference (AC) section which includes a long length of the umbilical vein is likely to be:

Question Title

* 7. For informed consent to be achieved, both oral and written acceptance of the examination is mandatory.

Question Title

* 8. Which feature is diagnostic of a missed miscarriage on a follow-up ultrasound scan?

Question Title

* 9. Which imaging parameter changes when you reduce the emitted power of ultrasound?

Question Title

* 10. Regarding an intrauterine gestation sac, which of the following is correct?

Question Title

* 11. A normal cord insertion visible with ultrasound at 12 weeks of gestation excludes which of the following?

Question Title

* 12. A Doppler shift will occur if both the sound source and the reflector are moving towards each other.

Question Title

* 13. Which of the following statements about placenta previa is true?

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* 14. A discrepancy between the gestational age equivalents of the head circumference (HC) and femur length (FL) could indicate:

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* 15. What will identifying the normal appearances of the choroid plexus at 12 weeks exclude?

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* 16. For transvaginal measurement of cervical length the probe is placed:

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* 17. What is the effect of the amplitude of the ultrasound waveform?

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* 18. A transvaginal cervical length measurement of 22 mm is noted during a routine 19 week scan of an asymptomatic woman. Vaginal progesterone would reduce her risk of preterm labour.

Question Title

* 19. A homogeneous mixed echogenic pattern would be consistent with: