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  2. Ultrasonography of chronic venous insufficiency of the legs

    en.wikipedia.org/wiki/Ultrasonography_of_chronic...

    The reflected ultrasound is received by the probe, transformed into an electric impulse as voltage and sent to the engine for signal processing and conversion to an image on the screen. The depth reached by the ultrasound beam is dependent on the frequency of the probe used. The higher the frequency the lesser the depth reached. [9]

  3. Ankle–brachial pressure index - Wikipedia

    en.wikipedia.org/wiki/Ankle–brachial_pressure...

    In a normal subject the pressure at the ankle is slightly higher than at the elbow (there is reflection of the pulse pressure from the vascular bed of the feet, whereas at the elbow the artery continues on some distance to the wrist). [citation needed] The ABPI is the ratio of the highest ankle to brachial artery pressure.

  4. Doppler ultrasonography - Wikipedia

    en.wikipedia.org/wiki/Doppler_ultrasonography

    Any sudden changes in direction of blood flow produces audible sounds on the ultrasound machine. [3] In spectral Doppler, the y-axis shows the direction and velocity of the flow. Meanwhile, the x-axis (as known as "baseline") shows the flow over time. The gradient at any point on the waveform would therefore shows the acceleration of the flow ...

  5. 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.

  6. Ultrasonography of deep vein thrombosis - Wikipedia

    en.wikipedia.org/wiki/Ultrasonography_of_deep...

    The risk of deep vein thrombosis can be estimated by Wells score.. Lower limbs venous ultrasonography is also indicated in cases of suspected pulmonary embolism where a CT pulmonary angiogram is negative but a high clinical suspicion of pulmonary embolism remains. [1]

  7. Toe pressure - Wikipedia

    en.wikipedia.org/wiki/Toe_pressure

    Ankle and toe systolic pressures comparison of value and limitations in arterial occlusive disease. Int Angiol, 1992;11(4):289-97. PMID 12593494 Kröger K, Stewen C, Santosa F, Rudofsky G. Toe pressure measurements compared to ankle artery pressure measurements.

  8. Dorsalis pedis artery - Wikipedia

    en.wikipedia.org/wiki/Dorsalis_pedis_artery

    The dorsalis pedis artery is located 1/3 from medial malleolus of the ankle. It arises at the anterior aspect of the ankle joint and is a continuation of the anterior tibial artery . [ 1 ] [ 2 ] It ends at the proximal part of the first intermetatarsal space.

  9. Ultrasound - Wikipedia

    en.wikipedia.org/wiki/Ultrasound

    Medical ultrasound is an ultrasound-based diagnostic medical imaging technique used to visualize muscles, tendons, and many internal organs to capture their size, structure and any pathological lesions with real time tomographic images. Ultrasound has been used by radiologists and sonographers to image the human body for at least 50 years and ...