Читать книгу Mount Sinai Expert Guides - Группа авторов - Страница 74

 Depth: adjusts depth of field of view by increasing or decreasing depth of US beam. Increasing depth will visualize deeper structures and decreasing will enlarge superficial structures.

 Gain: adjusts brightness of image by changing amplification of returning echoes.

 Time‐gain compensation: adjusts gain at selective depths to account for tissue attenuation; echoes returning from deeper tissues will be weaker.

 Freeze: creates ‘still’ or ‘frozen’ 2D images.

 Modes:B‐mode (brightness): standard scanning mode using different shades of gray to provide structural information in 2D image.M‐mode (motion): temporal measurement of structures moving toward or away from probe.Color Doppler: distinguishes vascular from non‐vascular structures and shows direction of flow.