Producing accurate test results with Doppler
ultrasound requires a skilled examiner. The scans are usually read within a
short period of time in case repeat tests are needed.
Doppler ultrasound requires a person to hold very still, some children may need
to be sedated so that their movements do not interfere with the
Angiography and venography are
X-ray tests that require the injection of
contrast material. In many cases, Doppler ultrasound
may be done instead of angiography or venography because it is faster, less
expensive, and noninvasive. If results from a Doppler ultrasound are
inconclusive, an angiography or venography test may be done. Angiography is
usually more accurate than Doppler ultrasound and is considered the most
definitive test for evaluating blood flow through an artery. Magnetic resonance
angiography (MRA) and computed tomography angiography (CTA) may be done instead
of conventional angiography because these tests are less invasive and easier to
perform than conventional angiography. In some cases, venography may be needed
to confirm a suspected vein problem. For more information, see the topics
Magnetic Resonance Angiogram (MRA).
Doppler ultrasound may be used to check many body organs. It can also be used
safely during pregnancy.
Other Works Consulted
Chernecky CC, Berger BJ (2008). Laboratory Tests and Diagnostic Procedures, 5th ed. St. Louis:
Fischbach FT, Dunning MB III, eds. (2009).
Manual of Laboratory and Diagnostic Tests, 8th ed.
Philadelphia: Lippincott Williams and Wilkins.
Pagana KD, Pagana TJ (2010). Mosby?s Manual of Diagnostic and Laboratory Tests, 4th ed. St. Louis: Mosby Elsevier.