All the following reduced temporal resolution by increasing the number of pulses per image except

The transducer has an impedance ____ times that of the tissue

Which two factors determine temporal resolution

What is the primary advantage of multiple focal zones along each scanline of a two dimensional image?

Under certain conditions and ultrasound system create each image in 0.01 second what is the frame rate?

Which resolution relate more directly to the transducer

Which of the following is associated with uniform brightness?

Axial resolution is chiefly determined by

Which of the following functions will result in increase in the signal strength of the received beam

An advantage of coded excitation is improved

Why is it necessary for the receiver to perform compressions on the electrical signals that is processed?

Why is it necessary for analog-to-digital conversion to occur prior to the signal reaching the scan converter?

What is the process of adjusting for path length related attenuation called?

What is the purpose of the radio frequency shield that is placed around the crystal and backing material of the ultrasound probe

If the crystal diameter is 4 mm what is the minimum distance perpendicular to the transducer that two objects need to be defined as two separate reflectors on the image?

What is the main disadvantage of continuous wave (Pedof) transducer?

Which of the following is a standard for data exchange among imaging systems

True or false the signal-to-noise ratio remains unchanged when a sonographer adjust receiver game

Which of the following is associated with pulse inversion imaging?

As the sound beam travels, it is attenuation. This explains the needs to have which receiver function.

What is the shape of the footprint produced by a curved sequential array transducer

What image is created with a two dimensional array transducer

What is the typical voltage of the signal That is the input to the receiver of an ultrasound system

What happens to an image when the number of bits allocated to each pixel increase?

The part of the receiver that reduces low level system noise is the

What is a number of binary digits required to store 29 levels of gray

What nonlinear behavior creates tissue harmonics

What is a primary advantage of multiple focal zones along each scan line of two dimensional image?

Gain compensation is necessary due to

The smallest component of a 3-D image is the

Factors determining axle resolution are the

An increase in the amplitude of the transmitted voltage will result in ____?

Which display is limited to a Single pair of brightness or displayed levels

The PCT crystal in the shape of a disk produces a continuous ultrasound wave. The beam is unfocused. The far zone is the only region where the beam dimer exceeds the transducer Diana matter.

Which of the following task is not performed by the receiver of an ultrasound system

The curved pattern of delays in the electrical spikes used in a linear phase. Ray transducer focuses the beams during reception.

All the following are requirements of contrast agents except

Which of the following task is incorporated in the process of demodulation

Which of the following is defined as changing the time of the shocking of the elements in order to shape and steer the beam

Voltage pulses from the pulser go to the

Which of the following would have the shallowest delay on the TGC curve?

A sonographer can make an image of uniform brightness by adjusting both alpha power and receiver gain

A sonographer adjust an ultrasound scan to double the depth of you from 5 cm to rate an imaging depth are inversely 10 cm what happens to the frame rate

The dimension perpendicular to the scan plane is called____

A sonographer reduces the sector size from 90° to 30° frame rate, however did not change what else happened?

What is a primary advantage of multiple focal zones along each scan line of two dimensional image

One way that a sonographer can alter. The actual resolution achieved during an exam is to adjust The maximum imaging depth

With a mechanical transducer, the ultrasound beam is directed in many different directions to create an imaging plane

Which of the following studies would typically be performed with a curved sequential array Transducer!

Arrays have additional beams resulting from their multi element structure called

With sector, scanning images with greater detail, spatial resolution are created when the number of acoustic pulses per degree of sector is increased

Which receiver function create an image of comparable brightness from top to bottom

A sonographer adjust the sector size from 45° to 90°. If nothing else is changed what happens to the frame rate

What does the far gain of a depth gain compensation curve represent?

Which of the following would have the deepest delay on TGC curve

What is the rationale for the ALARA principle

Shortening the pulses in diagnostic ultrasound Bordens the____

When using an instruments, typical of today’s imaging devices, a higher frequency transducer is likely to mildly improve the systems lateral resolution

Which of the following actions will improve the signal to Noise ratio

Which of the following is associated with highest mechanical index?

What frequency transducer will have the best range resolution

A byte is composed of _____ bits. A word is composed of ____bytes.

A technique that averages out the frequencies used to make the image to improve Contrast resolution and reduce speckle is

The output of an ultrasound pulser determines the ___of the acoustic pulse

Which of the following will improve temporal resolution?

What nonlinear behavior creates tissue harmonics

With a 1 D linear array, where is the dimension of the sound beam in the out of plane dimension the narrowest

How is the piezoelectric property instilled in a man-made crystal material?

Which of the following choices is best when the image on your US display reflectors only in a region far from the transducers but no reflectors in a region close to the transducer?

What receiver function converts a negative portion of the signal to positive

A sonographer adjust an ultrasound scan to double depth of view from 5 cm to 10 cm if the frame rate remains the same, which one of the following also occurs

The ____is where the filtering detection and compression are done

The ultrasound system in your lab has a transducer with a small footprint. This kind of transducer has the following disadvantages.

When using an instrument, typical of today’s imaging devices, a higher frequency transducer is likely mildly improved the systems lateral resolution

You are using a linear array transducer with 4 transmitted focal zones. how many pulses are required on each scan line to create the image?

What is the process of adjusting path length related attenuation called?

Which of the following functions will result in increase in the signal strength of the receive beAm

A digital representation of a number can achieve only specific values

A sonographer reduces the sector size from 90° to 30° frame rate, however did not change what else happened

The length of the pulse does not directly influence the temporal resolution