DMS 2210 Penny Chapter 24
Lobes of the thalamus
All of the following are midline brain structures except (Interhemispheric fissure, cavum septum pellucidum, lobes of the thalamus, third ventricle)
Strawberry sign
All of the following are sonographic findings of Arnold-Chiari II malformation except (Enlarged massa intermedia, hydrocephalus, obliteration of the cisterna magna, strawberry sign)
lissencephaly
Lack of sulci within the fetal cerebrum is a reliable indicator of
Trisomy 18
The choroid plexus cyst could be associated with an increase risk of
10 mm
The cisterna magna should not exceed ____ in the transcerebellar plane
Schizencephaly
The development of fluid-filled cleft within the cerebrum is consistent with
Falx cerebri
The double fold of dura mater used to divide the cerebral hemispheres is the
Anterior to the cerebellar vermis
The fourth ventricle is located
Third ventricle
The interthalamic adhesion (massa intermedia) passes through the
Thanatophoric Dysplasia
A clover leaf shaped skull is related to
Spina bifida and Arnold-Chiara Malformation
A lemon shaped skull is related to
Trisomy 18
A strawberry shaped skull is commonly associated with
Dandy walker malformation
Agenesis or hypoplasia of the cerebellar vermis results in what cerebral malformation
Dorsal Cyst
All of the following are sonographic features of alobar holosencephaly except ( Cyclopia, monoventricle, dorsal cyst, fused thalamus)
Holoprosencephaly
Atypical facial features are most commonly associated with what cerebral anatomy?
Ventriculomegaly
Dangling choroid sign is synonymous with
dandy walker malformation
Elevation of the tentorium and an enlarged cisterna magna that communicates with a dilated fourth ventricle is consistent with
Porencephaly
Following an intracranial hemorrhage, a cyst is noted within the cerebrum that communicates with the lateral ventricle. This is referred to as
Aqueductal stenosis
Most common cause of hydrocephalus in utero
Hydranencephaly
Sonographic finding of a fluid filled cranium with absence of the cerebral tissue is consistent with
Cavum septum pellucidum
The anechoic midline brain structure located between the frontal horns of the lateral ventricles is the
Corpus Callosum
The band of tissue that allows communication between the right and left cerebral hemispheres is the
Head circumference
The most accurate measurement at the estimating gestational age from the below list is the
Alobar
The most severe form of holoprosencephaly is
Between the two lobes of the thalamus
The third ventricle is located
Trisomy 13
What chromosomal aberration is most often associated with holosencephaly?
Copocephaly
Condition in which the frontal horns are small and the occipital horns are enlarged is referred to as
Cerebellar vermis
The structure located between the two lobes of the
Agenesis of the corpus callosum
The sunburst of the cerebral sulci is sonographic finding of
Aqueduct of Sylvius
The third ventricle communicates with the fourth ventricle at the
