Basic Math Concepts for Ultrasound Physics

Flashcards for CVT 1610C Basic Math Concepts for Ultrasound Physics.

What is the function of graphs in ultrasound?

Graphs show different types of information on the ultrasound screen, like numbers, qualities, and Doppler data.

What are axes in the context of graphs?

Lines that provide context in graphs, including the horizontal (X) and vertical (Y) axes.

What does the X axis represent?

Represents time in graphs.

What does the Y axis represent?

The (Y) axis can show how strong the sound is (amplitude), how fast something is moving (speed), or how quickly its position changes (velocity).

What are unrelated items?

Items that have no association or relationship whatsoever.

What are related items?

Items that are associated, but the relationship is not specific.

What does directly related or directly proportional mean?

When one increases, the other increases; when one decreases, the other decreases; graph extends from lower left to upper right.

What does inversely related or inversely proportional mean?

When one increases, the other decreases; graph extends from upper left to lower right.

What are reciprocals?

Two numbers that are multiplied together equal 1, a type of inverse relationship.

What are units?

Numbers must have these for context; a lone number is ambiguous.

What units do we use in ultrasound?

Used for distance, velocity, volume and area.

What are powers of ten?

Represents very large or very small numbers using scientific or engineering notation.

Positive exponent

Has value greater than 10.

Negative exponent

Has value less than 1.

Exponent of zero

Has value between 1 and 10.

How to calculate with powers of ten

Shift decimal point so number is between 1 and 10 and then multiply by the appropriate power of ten.

Who is the author of these notes?

Assistant Professor Chantal Hensley.

What direction does the Vertical axis (Y) run?

Runs up and down

What are common units used in ultrasound?

May include cm, mm, meters per second, cm^3, or cm^2.

What does inversely proportional mean graphically?

A relationship where the graph extends from the upper left to the lower right.