Doppler sonography

Doppler sonography is an ultrasound scan to measure blood flow velocity. Read here how it is used and what it reveals!

Doppler sonography

The Doppler sonography is an ultrasound scan to measure blood flow velocity. It is also referred to as Doppler ultrasound and is particularly important in the diagnosis of vasoconstriction. Read all about Doppler sonography, how it is used and what it reveals!

Product Overview

Doppler sonography

  • When will Doppler sonography be used?

  • How does Doppler sonography work?

  • What are the risks of duplex and Doppler sonography?

When will Doppler sonography be used?

Doppler sonography serves as a diagnostic tool in many medical disciplines. It is often used in vascular medicine to detect constrictions, saccades or closures. In neurology, the doctor uses them to examine cerebrovascular disorders and strokes, recurring, unclear headaches, ear noises, dizziness and many other clinical pictures. Even during pregnancy, the Doppler ultrasound has a high priority, for example:

  • Pregnancy-related hypertension and consequent illnesses
  • (Preeclampsia, eclams, HELLP syndrome)
  • Examination of the heart function of the fetus
  • Suspected childlike heart defects
  • Suspected growth or malformations of the child
  • Miscarriage in the prehistory
  • Gemini, triplets and other multiple pregnancies

How does Doppler sonography work?

In contrast to ordinary ultrasound, the Doppler examination also shows the blood flow within the vessels in addition to the organ structures: flowing fluids reject the sound waves in such a way that the frequency of the ultrasonic waves changes. Comparable with the seemingly changing pitch (frequency) of the siren of a fast passing ambulance (Doppler effect).

From the change in frequency, the Doppler ultrasound device calculates the flow rate and allows the physician to draw conclusions about the cross section or the nature of the blood vessels or organs examined.

Doppler sonography and duplex sonography: what's the difference?

In simple Doppler sonography, the doctor can see the blood flow in the vessel. The duplex sonography, however, also allows the assessment of the vessel wall itself and the course of the blood vessel. It combines, so to speak, the classic ultrasound with the Doppler sonography and thereby enables a more accurate diagnosis.

For these diseases, the examination is important

  • bladder stones
  • cholangitis
  • gallstones
  • herpes
  • Kidney stones
  • Cyst on the ovary

What are the risks of duplex and Doppler sonography?

As with all other ultrasound techniques, duplex and Doppler sonography for safe and painless examination methods. A radiation exposure such as X-rays or computed tomography does not result for the patient.

More about the symptoms

  • Blood in the urine
  • Burning while urinating
  • bilious attack
  • urinary retention
  • incontinence
  • groin pain
  • kidney pain
  • back pain
  • syncope
  • Abdominal pains


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