DESCRIPTION Ultrasound imaging is a method based on the principle of bouncing ultrasound waves from a device, so called probe (transducer, converter), connected to an ultrasound device that acquires grayscale images that illustrate the structure of organs (2D images).
Various types of examinations use different types of probes.
The colour Doppler ultrasound is a more advanced ultrasound technique that shows structures through which blood flows (heart and blood vessels) and is based on the principle of bouncing probe-emitted ultrasound waves from blood cells.
The screen provides an image showing blood flow in red and blue tones, and adjusting the device parameters provides a line graph along with a sound signal indicating the type of vessel, resistance and flow speed.
This enables determining changes such as narrowing (stenosis) or absolute cessation of flow (e.g. thrombosis).
The Power Doppler is a type of Dopple ultrasound that displays weaker and less accessible flows.
The M-mode methods, tissue and strain ultrasound are used solely for cardiac ultrasounds.