Penny fetal head and brain
The cisterna magna should not exceed ____ in the transcerebellar plane?
10mm
Absence of the skull is?
Acrania
The third ventricle is located?
Between the two lobes of the thalamus
The anechoic midline brain structure located between the frontal horns of the lateral ventricles is the ?
Cavum septum pellucidum
Which of the following will also typically be absent with agenesis of the corpus callosum?
Cavum septum pellucidum
The structure located between the two lobes of the cerebellum is the ?
Cerebellar vermis
What cerebral malformation is as a result of agenesis or hypoplasia of the cerebellar vermis?
Dandy walker malformation
All of the following are sonographic features of alobar holoproencephaly except?
Dorsal cyst
The double fold of dura mater that divides the cerebral hemispheres is the ?
Falx cerebri
The third ventricle communicates with the fourth ventricle at the ?
Foramen of monro
Which of the following should not be included in the correct level for hc measurement?
Fourth ventricle
With what structure does the posterior fossa cyst associated with dmv communicate?
Fourth ventricle
All of the following are sonographic findings of Arnold chiari 11 malformation except?
Strawberry sign
The inerthalamic adhesion ( massa intermedia) passes through the?
Third ventricle
What chromosomal aberration is most often associated with holoproencephaly?
Trisomy 13
A strawberry shaped skull is commonly associated with ?
Trisomy 18
The sunburst of the cerebral soul I is a sonographic finding of ?
Agenesis of the corpus callosum
Which of the following is a genetic disorder that includes craniocynostosis, midline facial hypoplasia and syndactyly?
Alert syndrome
The most severe form of holoproencephaly is?
Alobar
The fourth ventricle is located?
Anterior to the cerebellar vermis
The most common cause of hydrocephalus in utero is?
Aqueductal stenosis
A lemon shaped skull is related to ?
Arnold chiari 11
The choroid plexus cyst could be associated with an increase risk of?
Arnold chiari 11
The condition in which the frontal horns are small and the occipital horns are enlarged is referred to as?
Colpocepahly
The band of tissue that allows communication between the right and left cerebral hemisphere is the ?
Corpus callosum
Enlargement of the frontal horns and narrowing of the occipital horns is termed?
Dandy walker malformation
The most accurate measurement for estimating gestational age is?
Hc
What cerebral abnormality are atypical facial features most commonly associated with?
Holoproencephaly
The sonographic finding of a fluid filled cranium with absence of cerebral tissue is consistent with?
Hydranencephaly
Which of the following would be the most likely fetal cranial findings with torch infections?
Intracranial calcifications
Which of the following is located on both sides of the midline ?
Lateral ventricles
The lack of soul I within the fetal cerebrum is a reliable indicator of?
Lissencephaly
Which of the following would not be normally located within the midline of the fetal brain?
Lobes of the thalamus
A cisterna magna that measure 15mm and a normal appearing cerebellum is most likely?
Mega cisterna magna
What fetal suture is located within the frontal bone along the midline of the forehead?
Metoptic suture
Following an intracranial hemmorhage, a cyst is noted within the cerebrum that communicates with the lateral ventricle. This is referred to as?
Porencephaly
A normal shaped skull is termed?
Scaphocephaly
The development of fluid filled cleft within the cerebrum is consistent with?
Schizencephaly
A cloverleaf shaped skull is related to?
Thanatophoric dysplasia
Dangling choroid sign is associated with ?
Ventriculomegaly
