Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
The ratio of min to max signal amplitude that can be applied to a device without producing distortion is called |
Dynamic range |
|
|
|
The attenuation for soft tissue is |
Increase with tissue thickness |
|
|
|
The speed of ultrasound in the AIUM test object is equivalent to |
The speed in soft tissue |
|
|
|
Which quantity is unitless? |
Q factor |
|
|
|
The speed at which ultrasound propagates within a medium depends primarily on |
The compressibility of the medium |
|
|
|
Ultrasound waves in tissue are referred to as |
Longitudinal compression waves |
|
|
|
The intensity of a focused beam is generally |
Highest at the focal zone |
|
|
|
The first vertical deflection on the a mode that corresponds to the transducer face is called |
Main bang |
|
|
|
Acoustic impedance is |
The density of tissue times the speed of sound in tissue |
|
|
|
The mirror image artifact is commonly seen around which of the following structures? |
Diaphragm |
|
|
|
Detecting flow and a color flow imaging system depends on the detection of |
Changes in echo signal |
|
|
|
Real-time ultrasound transducers can be classified as |
Phased, linear, annular, and vector |
|
|
|
When a sound wave strikes a boundary between two tissues with a normal incidence, what other condition must be present in order for reflection to occur? |
A difference and acoustical impedance |
|
|
|
What does the arrow in Figure 1 - 54.2? |
Far gain |
|
|
|
Shadowing occurs with |
Highly attenuating structures |
|
|
|
Which of the following cannot be checked when the test object is scan from the top only? |
Lateral resolution |
|
|
|
Longitudinal or axial resolution is directly dependent on |
Spatial pulse length |
|
|
|
Select the least likely cause or causes for a Split Image artifact |
Gas bubble |
|
|
|
The ratio of the largest power to the smallest power that the ultrasound system can handle is the |
Dynamic range |
|
|
|
What is the distinction between real-time skins and B scans? |
No distinction, real-time skins are B scans |
|
