Which term corresponds to the displayed image of the returning echoes?

Which term corresponds to the displayed image of the returning echoes?

• A. Field of View
• B. Freeze Frame
• C. Frame
• D. Dynamic Range

Answer: (A)

The displayed image area on the screen is defined by the field of view. It’s the window into the patient that the machine is currently imaging, determining what portion of tissue and what spatial extent you see. Echoes returned from within that window are mapped to positions inside the field of view, so the on-screen image is essentially the field of view in action. A single instantaneous image or moment would be called a frame, and when you freeze that moment you get a frozen frame. Dynamic range refers to the range of echo amplitudes the image can display, i.e., the contrast, not the region being shown.

The displayed image area on the screen is defined by the field of view. It’s the window into the patient that the machine is currently imaging, determining what portion of tissue and what spatial extent you see. Echoes returned from within that window are mapped to positions inside the field of view, so the on-screen image is essentially the field of view in action.

A single instantaneous image or moment would be called a frame, and when you freeze that moment you get a frozen frame. Dynamic range refers to the range of echo amplitudes the image can display, i.e., the contrast, not the region being shown.