Are dating scans in pregnancy accurate
Advanced Ultrasound – This exam is similar to the standard ultrasound, but the exam targets a suspected problem and uses more sophisticated equipment.
Doppler Ultrasound – This imaging procedure measures slight changes in the frequency of the ultrasound waves as they bounce off moving objects, such as blood cells.
The next scan after your early pregnancy scan is the 12 Week Nuchal Scan.
This is available on the NHS, although not all hospitals routinely offer the more accurate combined test that we use which includes a blood test to increase accuracy to 95% (when performed by a suitably accredited FMF operator) The only way to achieve a 100% accurate diagnosis for Down Syndome is to have diagnostic genetic testing performed via a procedure such as a CVS or amniocentesis. However if you are looking for the most accurate Down Syndrome test but want to avoid the risks associated with diagnostic testing?
Your results are presented in a two-page printed report for you to forward to your GP/midwife/obstetrician.
The details are also securely saved on our fetal database so that we are able to monitor the growth of your baby during future scans.
The traditional ultrasound procedure involves placing gel on your abdomen to work as a conductor for the sound waves.
Your healthcare provider uses a transducer to produce sound waves into the uterus.
It is recommended that ultrasound only be used if medically indicated. The heartbeat may not be detected for reasons that include: tipped uterus, larger abdomen, or inaccurate dating with last menstrual period.
Ultrasounds are usually combined with other tests, such as triple tests, amniocentesis, or chorionic villus sampling, to validate a diagnosis.
An ultrasound exam may be performed throughout pregnancy for the following medically-necessary reasons: First Trimester: The ultrasound is a noninvasive procedure which, when used properly, has not demonstrated fetal harm.
Transvaginal scans may be used early in pregnancy to diagnose potential ectopic or molar pregnancies.
There is not a recommended number of ultrasounds that should be performed during routine prenatal care.