Question 1

Dilation of the entire ventricular system, including the fourth ventricle, is associated with which one of the following abnormalities?
A) Aqueductal stenosis
B) Spinal defects
C) Cardiac defects
D) Foramen Monro stenosis

Accepted Answer

Dilation of the entire ventricular system, including the fourth ventricle, is often associated with spinal defects, such as neural tube defects, which can lead to conditions like Arnold-Chiari malformation, causing obstruction of cerebrospinal fluid flow and resulting in hydrocephalus.

Question 2

The size of the cistern magna is obtained by measuring from the _____________ to the ______________.
A) cerebellar lobe; skin line
B) vermis; skin line
C) cerebellar lobe; occipital bone
D) vermis; occipital bone

Accepted Answer

The size of the cisterna magna is obtained by measuring from the vermis to the occipital bone. This measurement is important in neuroimaging to assess for abnormalities such as an enlarged cisterna magna, which can be associated with certain conditions.

Question 3

Visualization of the distal femoral epiphysis signifies a gestational age beyond:
A) 28 to 30 weeks.
B) 31 to 33 weeks.
C) 33 to 35 weeks.
D) All of the above

Accepted Answer

The answer of Visualization of the distal femoral epiphysis signifies...

Question 4

The normal atrium of the lateral ventricle measures ______ mm.
A) 6.5
B) 8
C) 10
D) 11

Accepted Answer

The normal atrium of the lateral ventricle measures 6.5 mm.

Quiz 51: Sonography of the Second and Third Trimesters

Dilation of the entire ventricular system, including the fourth ventricle, is associated with which one of the following abnormalities?

The size of the cistern magna is obtained by measuring from the _ to the __.

Visualization of the distal femoral epiphysis signifies a gestational age beyond:

The normal atrium of the lateral ventricle measures ______ mm.