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  2. Echocardiography - Wikipedia

    en.wikipedia.org/wiki/Echocardiography

    Echocardiography, also known as cardiac ultrasound, is the use of ultrasound to examine the heart. It is a type of medical imaging, using standard ultrasound or Doppler ultrasound. [1] The visual image formed using this technique is called an echocardiogram, a cardiac echo, or simply an echo.

  3. Doppler echocardiography - Wikipedia

    en.wikipedia.org/wiki/Doppler_echocardiography

    Doppler echocardiography is a procedure that uses Doppler ultrasonography to examine the heart. [1] An echocardiogram uses high frequency sound waves to create an image of the heart while the use of Doppler technology allows determination of the speed and direction of blood flow by utilizing the Doppler effect .

  4. Cardiac imaging - Wikipedia

    en.wikipedia.org/wiki/Cardiac_imaging

    Apical four chamber ultrasound view of heart. Transthoracic echocardiography (TTE) uses ultrasonic waves for continuous heart chamber and blood movement visualization. It is the most commonly used imaging tool for diagnosing heart problems, as it allows non-invasive visualization of the heart and the blood flow through the heart, using a technique known as Doppler.

  5. Aortic valve area calculation - Wikipedia

    en.wikipedia.org/wiki/Aortic_valve_area_calculation

    While this method directly measures the valve area, the image may be difficult to obtain due to artifacts during echocardiography, and the measurements are dependent on the technician who has to manually trace the perimeter of the open aortic valve. Because of these reasons, planimetry of aortic valve is not routinely performed. [citation needed]

  6. Bruce protocol - Wikipedia

    en.wikipedia.org/wiki/Bruce_protocol

    The test score is the time taken on the test, in minutes. This can also be converted to an estimated maximal oxygen uptake score using the calculator below and the following formulas, where the value "T" is the total time completed (expressed in minutes and fractions of a minute e.g. 9 minutes 15 seconds = 9.25 minutes). As with many exercise ...

  7. Cardiac stress test - Wikipedia

    en.wikipedia.org/wiki/Cardiac_stress_test

    The echocardiography is performed both before and after the exercise so that structural differences can be compared. A resting echocardiogram is obtained prior to stress. The ultrasound images obtained are similar to the ones obtained during a full surface echocardiogram, commonly referred to as transthoracic echocardiogram .

  8. Cardiac index - Wikipedia

    en.wikipedia.org/wiki/Cardiac_index

    Echocardiography: By combining two-dimensional ultrasound with Doppler measurements, this technique evaluates cardiac function non-invasively. It is highly accurate but requires experienced operators and is more expensive than Doppler ultrasound .

  9. Duke Treadmill Score - Wikipedia

    en.wikipedia.org/wiki/Duke_Treadmill_Score

    Duke Treadmill Score is one of the tools for predicting the risk of ischemia or infarction in the heart muscle. [1] The calculation is done based on the information obtained from an exercise test by this formula: [citation needed] [exercise duration by Bruce protocol] - [ 5 × (maximal ST elevation or depression)] - [4 × (treadmill angina index)]

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