RADT 1075 Final Review

Penumbra is more pronounced on the:

The unit of measurement of spatial resolution is the:

states that the sampling frequency must be greater than twice the bandwidth of the input signal

A kilobyte is the equivalent of 1024 characters that consist of ______ bits of information.

Recorded detail is also called all except:

For the same FOV, what happens to pixel size as matrix size gets smaller?

An electronic switch that alternately allows or does not allow electronic signals to pass is a:

A system with a bit depth of 16 has:

Increasing the SID will:

After this long, CR plates should be erased if unused

A graphical representation of exposure values collected from the imaging plate.

Which function measures the accuracy of an image by using a scale from zero to one?

Digital image contrast is constant, so images can be made ___________.

A radiographic image is in the spatial _____________ and has a specific matrix size.

What ability must an imaging plate have for a CR to function?

filters light before photodetection occurs

If you decrease OID what happens to penumbra

If image size measures 4.6" and mag factor is 1.42, what is the size of the object?

Angling the x-ray tube will:

The focal spot size is defined as all except:

Which of the following refers to a continuously varying quantity?

Increasing the OID will:

RAM is:

This term describes the amount of useful data representing the patient compared to noise

How do we capture receptor exposure in digital radiography?

What enables radiologists to remotely read exam and write reports?

PACS is an acronym for:

This is the activator in the phosphor layer of the IP

This is the slowest part of the computer

What causes quantum noise on a digital image?

The analog signal should be sampled at least how many times per cycle?

A _____ produces light when x-rays strike it.

When imaging a wild 2 year old, what change would you make to accommodate for motion?

What is the relationship between the FSS and spatial resolution?

In computer terminology, a single binary digit is referred to as a:

What is the number one way to control voluntary motion of your patient?

Penumbra is described by all except:

What is the cassette-based system that uses a photostimulable storage phosphor imaging plate?

If the correct anatomical menu is not selected prior to processing the imaging plate...

This type radiography has the lowest line spread function

What is not part of the CPU?

The components of a CR system are:

The reason we do a chest x-ray PA is because:

Geometric properties refer to:

Which of the following has the highest DQE?

What is the standard for sending text based info when dealing with patient medical records

CCDs posses less light transfer efficiency than CMOS detectors

Spatial resolution can be measured by how close together pairs of lines can be displayed.

Which of the following is an example of computer output device?

The human eye can typically detect approximately:

What are the two main functions of the drive mechanism of a CR reader?

Each pixel contains a number and represents a/n:

The easiest way to correct for Quantum Mottle is to:

Rank the DQE from lowest to highest based on the radiography system used.

ability of an imaging system to accurately display small objects with high contrast

Permanent instructions (programs) that cannot be modified are stored by the:

To improve spatial resolution:

The result of low-pass filtering is:

Occurs when exposure is greater or less than what is needed to produce an image

What converts a digital signal from a computer to an analog signal?

Aliasing as a result of violating the Nyquist limit results in the Moire effect similar to

Which of the following has the highest spatial resolution?

Increasing pixel size

Interacts with x-rays to create an electronic signal-(no phosphor material necessary)

Which of the following is NOT a digital image acquisition modality?

The misrepresentation of the size of an object is:

This keeps the laser beam at a constant size, shape, speed, and intensity in the reader

The higher number of pixels in a matrix, the:

The physical components of a computer system are generally described as:

______ is determined by bit depth.

If 3 feet from the source of expo is 16 R/min, what is the rate of expo at 6 feet

Which of the following is an example of application software?

Considering the primary controller of exposure, which has the highest IR expo?

the ability to distinguish anatomical structures of similar subject contrast

The two different types of FPDs that have been developed:

multiple devices in a single cabinet that acts as a single storage system is:

What enhances detection of microcalcifications and malignant lesions?

This term describes the state of CR phosphor atoms after exposure

range of optimum kVp ranges for CR