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  2. Tissue Doppler echocardiography - Wikipedia

    en.wikipedia.org/wiki/Tissue_Doppler...

    The terms tissue Doppler imaging (TDI) and tissue velocity imaging (TVI) are usually synonymous with TDE because echocardiography is the main use of tissue Doppler. Like Doppler flow, tissue Doppler can be acquired both by spectral analysis (spectral density estimation) as pulsed Doppler [1] and by the autocorrelation technique as colour tissue ...

  3. Doppler ultrasonography - Wikipedia

    en.wikipedia.org/wiki/Doppler_ultrasonography

    Doppler ultrasonography is medical ultrasonography that employs the Doppler effect to perform imaging of the movement of tissues and body fluids (usually blood), [1] [2] and their relative velocity to the probe. By calculating the frequency shift of a particular sample volume, for example, flow in an artery or a jet of blood flow over a heart ...

  4. Medical ultrasound - Wikipedia

    en.wikipedia.org/wiki/Medical_ultrasound

    Medical ultrasound includes diagnostic techniques (mainly imaging techniques) using ultrasound, as well as therapeutic applications of ultrasound. In diagnosis, it is used to create an image of internal body structures such as tendons, muscles, joints, blood vessels, and internal organs, to measure some characteristics (e.g., distances and velocities) or to generate an informative audible sound.

  5. Speckle tracking echocardiography - Wikipedia

    en.wikipedia.org/wiki/Speckle_Tracking...

    Speckle tracking is one of two methods for Strain rate imaging, the other being Tissue Doppler. Twist or torsional deformation define the base-to-apex gradient and is the result of myocardial shearing in the circumferential-longitudinal planes such that, when viewed from the apex, the base rotates in a counterclockwise direction.

  6. Medical imaging - Wikipedia

    en.wikipedia.org/wiki/Medical_imaging

    Medical imaging is the technique and process ... of water molecules in human tissue, ... Echocardiography uses 2D, 3D, and Doppler imaging to create pictures of the ...

  7. Strain rate imaging - Wikipedia

    en.wikipedia.org/wiki/Strain_rate_imaging

    The Tissue Doppler method is based on the colour Doppler, giving a velocity field with velocity vectors along the ultrasound beam over the whole sector. It measures the velocity gradient between two points along the ultrasound beam with a set distance. [1] It gives the same result as the velocity gradient. [6]

  8. Doppler echocardiography - Wikipedia

    en.wikipedia.org/wiki/Doppler_echocardiography

    Unlike 1D Doppler imaging, which can only provide one-dimensional velocity and has dependency on the beam to flow angle, [4] 2D velocity estimation using Doppler ultrasound is able to generate velocity vectors with axial and lateral velocity components. 2D velocity is useful even if complex flow conditions such as stenosis and bifurcation exist ...

  9. Transthoracic echocardiogram - Wikipedia

    en.wikipedia.org/wiki/Transthoracic_echocardiogram

    Color doppler is a form of 2D echo in which the doppler shift of the structures is shown as color. Typically, this is shown as red and blue with red indicating movement toward the transducer and blue indicating movement away from the transducer. This can be used to show blood flow through the valves to visually indicate the direction of blood flow.