1
$\begingroup$

Turbulence in blood flow is known to indicate diseased or obstructed arteries. Techniques to measure turbulence in blood flow are mostly based on turbulence kinetic energy measurments using MRI [e.g., Ha H et al., PLOS ONE 11(3), (2016) (1)].

Are there any other well known techniques to measure turbulent blood flow, besides those based on MRI?

(1) https://doi.org/10.1371/journal.pone.0151540

$\endgroup$
1
$\begingroup$

Whatever constricts an orifice, whatever dilates a cavity, whatever establishes an orifice or cavity where none shall be, will disturb the even flow of blood and produce vibrations and a murmur.

—Samuel Jones Gee (1839–1911)

Turbulent blood flow is classically detected by auscultation (listening). Turbulent flow across the valves of the heart causes murmurs. A certain amount of external pressure applied to a brachial artery allows turbulent flow, which you can hear, which is how you measure blood pressure. Carotid bruit's are a sound produced by turbulence in the carotid artery. You can reference any physical examination textbook, e.g., Bate's for information on this method of detecting turbulent flow. There's an NCBI books Clinical Methods textbook that you can search for turbulence.

Turbulence can also be detected by one of a variety of ultrasound methods. The specific measurements taken using these methods are typically anatomic measurements (e.g., thickness of a tissue, distance across a valve), peak flow, overall direction of flow, and gradient measurements, since those are the markers that have been used to characterize disease and/or outcomes. However they can detect turbulence. Quantitative measurements of turbulence just aren't used experimentally.

$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.