Ultrasound Display Modes Lecture

This flashcard set covers the characteristics, axes, and uses of A-Mode, B-Mode, and M-Mode in medical ultrasound based on the provided lecture notes.

What does A-Mode stand for and what is its visual appearance?

A-Mode stands for Amplitude and it looks like arrow-shaped spikes.

What are the primary axes in A-Mode?

The $x\text{-axis}$ represents depth and the $y\text{-axis}$ represents amplitude (how strong the echo is).

What is the main clinical use for A-Mode?

Eye measurements.

How many dimensions are represented in A-Mode?

$1\text{-dimensional}$ (unidirectional).

What does B-Mode stand for and what is its primary use?

B-Mode stands for Brightness and it is used for general imaging (ultrasound picture).

How does B-Mode convert echoes into a visual display?

The machine converts every echo into a dot, where a weak echo is dark and a strong echo is bright.

What are the dimensions and axes associated with B-Mode?

It is Bi-dimensional; the $x\text{-axis}$ represents depth and the $z\text{-axis}$ represents amplitude (brightness).

What does M-Mode stand for and what is its specific application?

M-Mode stands for Motion and its main use is for heart movement (moving heart).

What are the axes defined for M-Mode?

The $x\text{-axis}$ represents time and the $y\text{-axis}$ represents reflector depth.

How is the visual output of M-Mode described?

Horizontal wavy lines, created by recording every heartbeat one after another.

In A-Mode, what does the $y\text{-axis}$ specifically measure?

How strong the echo is (amplitude).

Is there a picture generated in A-Mode?

No; it consists only of spikes.

How many dimensions are represented in M-Mode?

$1\text{-dimensional}$, showing horizontal wavy lines.