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117 Cards in this Set

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25mm TA

Fetal pole should be seen with MSD

Transverse

Fetus lying perpendicular to maternal sagittal axis


1800mlU/2IS TA

Gsac seen when beta hCG level is

Bradycardia

ABNL slow heart rate

2mm

Embryo detected at what length

12 weeks

Midgut hernia retracts at what time

11

Yolk sac collapse at

Decidua pellucidi

Not one of the 3 decidualized endo layers.

FL

Most accurate in 3rd trimester if unable to get HC

Normal situa

Liver on right, stomach on left, heart apex on left

10 weeks

Embryo becomes fetus

<10mm

NL lat vent

Thalmus

Widest Trv diameter of the skull and proper level for BPD

6.6 wks

Crl measures 6mm what is gestational age

Decidua capsularis

Middle layer of endo that surrounds blastocyst.

5 wks

YS seen as early as

5th wk

Embryonic disc develops into trilaminar disc at

Zygote

Union of sperm and ovum results in

Breech

Term indicating fetal head is toward fundus

Chorion

Membrane that completely encloses Gsac

Stomach and PV

AC taken at what level

Blighted ovum

Another term for anembryonic pregnancy

8mm

What MSD should yolk sac be visualized TV

Chorionic frondosum

Fetal surface of placenta

Morula

Solid mass of cells that forms into the blastocyst

14-16 weeks

Regression of corpus leutium occurs at

Incomplete AB

RPOC and heavy bleeding

4 weeks

Earliest IUP can be seen TV

Vitaline duct

Yolk sac connected to embryo by the

Sub chorionic hemorrhage

Crescent shaped fluid collection at edge of placenta seen after 20 weeks

Corpus leutium cyst

Progesterone produced by

20 weeks

According to McDonald; fundal height is at umbilicus at

Digestive tract

Ys xfers nutrients, devels sex glands, hemopoietist and

6mm

Max NL neutral lucency

Secondary yolk sac

First structure seen within GSac

Thalamus

Cavum septum pellucidi seen in front of

10 months

Not normal pregnancy length

Threatened AB

6 weeks bleeding and cramping

60 mins

Fetal bladder empties

12 weeks

Cranial bones ossify by

False

Umbilical cord is 2 veins 1 artery

Extopic

Greater than NL hCG NOT seen with.

5mm

Cardiac activity should be seen with CRL of

Cytotrophoblast

Inner layer of trophoblast in cells that forms the chorion

10 weeks

CRL most accurate at

Rhombencephalon

Cystic area in post region of fetal head.

Ampullary

Fertilization normally occurs in what portion of Fallopian tibe

Amnion

Membrane closest to fetus

Anembryonic pregnancy

Positive HCG and empty GSac

16 weeks

Amnion completely fused with chorion

holoprosencephaly

Large midline ventricle no evidence of falx, fused thalami, hypotelerism

rhombencephalon

hypoechoic cystic area in posterior of fetal brain

absent facial bones

not associated with anencephaly

Arnold Chiari II

ABNL flattening of cerebellum

railroad track represents

vert body, post lamina, spin process

anenchephaly

not associated with hydro

hypotelerism

orbits too close together

cystic hygroma

spetated mass appearing on either side of the neck

meningocele

encapsulated lesion along spinal column

meninomylocele

spinal defect containing meniges and neural tissue

Arnold Chiari malformation

associated with lemon and banana sign

10 mm

cisterna magna measurement

choroid plexus

prominent structure seen within lat vents

subarachnoid space

hypo echoic space between skull and cerebral cortex

raschischesis

completely open spine

16 weeks

ossification centers of the spine seen

poly and spina bifida

not associated with dandy walker

neruluation

formation of neural plate and closure of neural tube

anenchephaly

MC neural tube defect

dandy walker

enlargement of posterior fossa and splaying of cerebral hemispheres

hydraencephaly

destruction of the cerebral cortex due to carotid occlusion

scalloping frontal bones

not associated with inencephaly

aqueductal stenosis

not associated with menigomyloceles

choriod plexus cysts

not always associated with other abnormalities

thin placenta

not associated with cystic hygroma

lat vents

not imaged in posterior fossa

hemivertebra

not associated with caudal regression

open spine completely covered by skin

common SA of spina bifida

cerebral penduncles

portion of brain that lies below 3rd ventricle

falx

linear echo dividing brain from right and left

hydraencephaly

Infants DO NOT have normal intellectual function

thalamus

surrounds 3rd ventricle

lumo sacral

common spina bifida site

transverse

most important view of fetal spine

thalami

should be routinely identified in BPD image

cisterna magna

anechoic space posterior to the cerebellum

cystic hygroma

lymphatic neck mass

spina bifida

incomplete or splayed fetal spine

elevated msAFP

associated with fetal neural tube ABNL

cystic hygroma

does not cause cerebral ventricle dilatation

presacral teratoma

complex mass in pelvis of female fetus

lateral atria

first sign of hydro

1cm TRV

lat vent measurement

holoprosencephaly

failure of cranial vault to fuse

dangling choriod

asso with hydro

occipital region

MC location of encephlaceles

microencephaly

mimics anencephaly

encephalocele

defect of cranial herniation

holoprosencephaly

associated with Trisomy 13

aqueductal stenosis

MC cause of hydro

low set ears

not detected by US

excessively small chin

micrognathia

lemon sign

frontal bones collasping

spina bifida

MC associated with Arnold Chiari II

micromelia

entire limb

TC/AC ratio

to rule out ABNL narrow thorax

Side view image

thanatophoric

talpies equinovarious

tib fib and bottom of foot in same view

overlapping digits

clinodactly

hypophospotasia

alkaline phosphatate

talpies

clubfoot

trident hand

not asso woth Hetero achrondroplasia

shaft

primary ossification of long bone

thanatophoric

MC lethal skeletal dysplasia

protruding thorax

not asso with achondrogenesis

false

we are supposed to count fingers and toes

short rib

polydactly