Three-dimensional echocardiography from the apex
Real-time, three-dimensional image from the top of the heart. Two orthogonal cross-sectional images were selected (above), four-chamber and two-chamber images were extracted
Ultrasound is a non-invasive (non-bleeding) medical examination that helps doctors diagnose and treat disease. Conventional ultrasound produces images of thin, flat slices of the body. Advances in ultrasound technology include 3D ultrasound (3D ultrasound) which can reconstruct data obtained from sound waves into 3D images. 4D ultrasound (4D ultrasound) is 3D ultrasound that records movement.
Doppler ultrasound may also be part of an ultrasound examination.
Doppler ultrasound is a special ultrasound technique that evaluates blood flow in blood vessels, including the body's main arteries and veins in the abdomen, arms, legs, and neck.
There are 3 types of Doppler ultrasound:
Colour Doppler ultrasound uses a computer to convert Doppler values into a series of colours that represent the speed and direction of blood flow within the blood vessels.
Power Doppler ultrasound is a new technique that is more sensitive than colour Doppler and can provide more detailed information about blood flow, especially in small blood vessels. However, energy ultrasound does not help doctors determine the direction of blood flow, which can be important in some cases.
Spectrum ultrasound. Instead of representing the Doppler value visually, spectral Doppler ultrasound presents the blood flow quantity graphically as the distance travelled per unit time.
Real-time, three-dimensional image from the top of the heart. Two orthogonal cross-sectional images were selected (top), four-chamber and two-chamber images were extracted (lower).