Exam 4: Instruments

A digitizer _______________.

Which of the following instrument components protects the sensitive input components?

The pulse delays have a ________ input from the pulser but ________ output(s) to the transducer element.

Which system component produces the electrical voltages that drive the transducer?

The conversion of echo voltages from the radio frequency to video form is called ________.

The ________ drive(s) the transducer forming the beam that sweeps through the tissue to be imaged.

Gain is the ratio of _____________________.

The ________ determines how much amplification is accomplished in the amplifier.

When gain is too high,which of the following occurs?

Brightness mode is also called ________.

Intensity of the echo information is stored as binary numbers in memory elements.

Three-dimensional presentation is a function of the signal processor.

Analog-to-digital converters convert the ________ voltage representing echoes to ________ for digital signal processing and storage.

Detection is also called demodulation.

The ________ and ________ determine the maximum imaging depth.

Displays have dynamic ranges up to ________ dB.

PACS stands for ________.

Panoramic imaging expands the image ________.

The greater the voltage amplitude produced by the pulser,the greater the intensity of the ultrasound pulse.

An increase in the number of channels ________.