All maternity units in the West Midlands offer pregnant women
a scan at approximately 20 weeks gestation to examine
the fetus for structural congenital anomalies. The precise
purpose of this screening scan has recently been the
subject of an RCOG Working Party, which I was pleased
to be a member of. The conclusions of this group, and
independent research undertaken in the West Midlands
region has suggested that when a routine fetal anomaly
scan is undertaken the following structures should be
accept that using these methods there will be cases
in which congenital anomalies are not identified.
The detection rate will depend upon the degree of abnormality,
the training of the person performing the scan, the
quality of the machine used and the structures within
the hospital to encourage high quality of ultrasound,
such as the time allocated, the intensity of work
and staff support.
Below is a pictorial checklist that provides
a summary standard for this type of examination.