•
Doppler scan
is a special scan which uses black
and white or color images to examine
the blood flowing through the umbilical
cord between the placenta and the
baby.
• Doppler scan is a non-invasive
test differs from the normal ultrasound
in that a slightly different soundwave
is used which bounces off moving red
blood cells and shows the speed rate
at which the cells are moving.
• Doppler scan can be done at
the same time as an ultrasound; the
same equipment is used to measure
the blood flow in various body parts
such as the umbilical cord, liver,
heart and brain.
• Signals of different colors
appear on the screen which help your
doctor assess your baby's health
• Doppler scan is usually conducted
between week 28 and delivery
• Women with high risk pregnancies
including those with low amniotic
fluid levels, who are carrying twins
sharing the same placenta or carrying
babies who are small for dates or
not growing at the right pace
• Doppler scan can be used to
check if baby is anemic
• Doppler scan has also replaced
bilirubin count which is used to find
out if a rhesus-positive baby needs
a blood transfusion.
• If the placenta is not functioning
to its optimum or if your baby is
not growing well enough your doctor
may use the Doppler scan to check
on blood flow in the cord or in baby's
body. Your doctor will then decide
if early delivery is necessary or
other medical possibilities will be
evaluated
• Modern ultrasounds have the
Doppler function which allows the
sonographer to press a button and
locate a particular blood vessel.
• Different lights will then
be analysed by the machine. Within
few minutes and the test is over
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