Temporal Resolution

Question 1

Frame Rate

Answer 1

How many frames per sec (Hz or sec)

Determined by (2) things

• depth setting
• number of pulses per frame

Question 2

Temporal Resolution

Answer 2

the ability to distinguish closely timed events as separate events; and to correctly display rapidly moving structures in time

Question 3

Lateral Resolution

Answer 3

• the ability of the system to distinguish two points in the direction perpendicular to the direction of the ultrasound beam
• affected by the width of the beam and the depth of the image

Question 4

Field of View

Answer 4

• image width
• wider field of view requires more scan lines
• more scan lines decreases frame rate and temporal resolution

Question 5

Line Density

Answer 5

how many scan lines

-higher line density takes twice as long as lower line density

Question 6

Spatial (Detail) Resolution

Answer 6

The screens ability to produce an accurate and clear image.

Question 7

Contrast Resolution

Answer 7

The differences in intensity between two objects, or between an object and its background.

Question 8

Real Time Image

Answer 8

B-mode ultrasonography using an array of detectors so that scans can be made electronically at a rate of 30 frames a second.