Dynamic Receive Focusing
During _______, when reflected sound arrives at the transducer, multiple neighboring elements in the probe are excited
What is reception?
Temporal resolution is better when images are created more____________
What is frequently?
The ability to distinguish two objects along the axis of the beam.
What is Axial resolution?
Focusing helps to sharpen the ultrasound image by ___________ the beam.
What is narrowing?
What is responsible for generating and receiving the sound waves.
What is PZT?
A more accurate image can be created when the ultrasound receiver introduces_____________
What is variable time delays?
Temporal Resolution pertains to___________
What is accuracy in time?
The ability to distinguish objects side by side.
What is Lateral Resolution?
____________ focusing is used with linear sequential, phased array, annular phase, convex, and vector transducers.
What is electronic?
PZT elements convert electrical signals to __________
What is mechanical sound?
With dynamic receive focusing, the reflected sound is focused at ______________
What is many depths?
Temporal resolution is related to_____________
What is Frame Rate?
Improves with narrower beams and higher frequencies
What is Lateral Resolution?
Transmit focusing and dynamic receive focusing improve____________ resolution over a great range of depths.
What is lateral?
The piezoelectric material is _________ wavelength thick.
What is one-half?
Dynamic receive focusing is performed_____________ by the ultrasound system
What is automatically?
_______________ improves temporal resolution.
What is high frame rate?
Improves with higher frequencies and shorter pulse lengths.
What is Axial Resolution.
When focusing, beam diameter in the _______ zone increases.
What is far?
______________ describes the property of certain materials to create a voltage when they are mechanically deformed or when pressure is applied to them.
What is Piezoelectric Effect?
Dynamic Range Focusing is achieved by introducing varying ___________in the signals returning to the ultrasound system.
What is phase delay?
What is the fundamental limitation of temporal resolution?
What is Speed of sound in the medium?
Lateral resolution is determined by__________
What is the width of the sound beam?
When focusing beam diameter in near field and ______ zone is reduced.
What is Focal?
PZT materials change shape when a voltage is applied to them.n. This process is called_________
What is Reverse Piezoelectric Effect?