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Ultrasound Fetal Head Measurement

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Questions and Answers

At what level should the transducer be angled to include the cerebellum and occipital bone when measuring the nuchal fold?

Medially
Caudally (correct)
Cranially
Laterally

What is the correct plane to view the facial profile for the nasal bone?

Transverse plane
Coronal plane
Sagittal plane (correct)
Axial plane

What is the recommended angle of insonation when evaluating the facial profile for the nasal bone?

Any angle is acceptable
0 degrees or 180 degrees
90 degrees
45 degrees or 135 degrees (correct)

What may occur if the angle of insonation is less than 45 degrees or greater than 135 degrees when evaluating the facial profile for the nasal bone?

<p>The nasal bone may artificially appear to be absent (C)</p> Signup and view all the answers

How should the nuchal fold be measured?

<p>By placing calipers on the outer skull and outer skin edge (A)</p> Signup and view all the answers

Study Notes

Nuchal Fold Measurement

Measured between 15 and 21 weeks of gestation
Obtained by getting a transverse plane of the fetal head at the level of the biparietal diameter
Transducer angled caudally to include cerebellum and occipital bone
Measured by placing calipers on the outer skull and outer skin edge

Nasal Bone Evaluation

Correct technique and angle of insonation is crucial
Profile viewed in the midsagittal plane
Angle of insonation should be close to 45 degrees or 135 degrees
Angles less than 45 degrees or greater than 135 degrees may artificially make the nasal bone appear absent

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Description

This quiz assesses knowledge on how to measure nuchal fold and evaluate facial profile during fetal ultrasound examination. It covers techniques and angles of insonation for accurate measurements.