By reflecting high-frequency sound
waves (ultrasound) off of circulating red blood cells, Doppler ultrasonography
is a noninvasive diagnostic that may be used to gauge the amount of blood
flowing through your blood arteries. There are several Doppler ultrasonography
kinds available:
· -Colour Doppler: This procedure
creates a picture of a blood vessel using conventional ultrasonography
techniques. In addition, the Doppler sounds are transformed by a computer into
colours that are superimposed on a picture of the blood artery to indicate the
direction and speed of blood flow.
· -Spectral Doppler: Also referred to
as pulse wave Doppler, this kind shows blood flow measurements visually instead
of as a colour image, in terms of the distance travelled per unit of time. It
can offer numerical information on blood flow in certain vascular sections.
· -Duplex Ultrasound: This technique
blends Doppler and conventional ultrasonography. Doppler images display the
flow of blood through the vessels, while traditional ultrasonography employs
sound waves that reflect off blood vessels to generate pictures. Assessing the
direction and speed of blood flow within the artery might be beneficial.
· -Doppler Power: Power Doppler, a
more sensitive variation of the colour Doppler, can offer additional
information about blood flow, particularly in situations when blood flow is
faint or difficult to detect. It does not, however, assist the physician in
determining the direction of blood flow, which might be crucial in some
circumstances.
· -Transcranial Doppler: This kind of Doppler ultrasonography is used to assess blood flow in the main arteries that supply the brain. Patients who have experienced strokes or who are at high risk of stroke frequently take it.
The decision of which Doppler ultrasound type to utilise will rely on the particulars of each patient's case as well as the precise data that the healthcare provider need. Each type of Doppler ultrasound has unique uses and advantages. Refer to the available resources for further in-depth details.
References
Doppler
ultrasound: Medlineplus medical test. (2023). Retrieved from https://medlineplus.gov/lab-tests/doppler-ultrasound/
Jenna Fletcher , C. W., M. D. ,. MPH. (2019). Doppler ultrasound:
Uses, what to expect, and results. Retrieved from https://www.medicalnewstoday.com/articles/326824
John P. Cunha, DO, FACOEP. (2021).
What is a Doppler? ultrasound types (2D, 3D, 4D) & uses. Retrieved from https://www.emedicinehealth.com/what_does_doppler_mean/article_em.htm
professional, C. C. medical. (n.d.). Doppler ultrasound: What is it, purpose and procedure details. Retrieved from https://my.clevelandclinic.org/health/diagnostics/22715-doppler-ultrasound
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