RADT 1075 Final Review

What causes quantum noise on a digital image?

Angling the x-ray tube will:

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

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

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

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

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

PACS is an acronym for:

Which of the following is an example of application software?

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

The human eye can typically detect approximately:

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

range of optimum kVp ranges for CR

How do we capture receptor exposure in digital radiography?

What enables radiologists to remotely read exam and write reports?

If you decrease OID what happens to penumbra

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

______ is determined by bit depth.

Increasing pixel size

Increasing the SID will:

The easiest way to correct for Quantum Mottle is to:

Penumbra is more pronounced on the:

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

The focal spot size is defined as all except:

This type radiography has the lowest line spread function

the ability to distinguish anatomical structures of similar subject contrast

What is not part of the CPU?

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

A _____ produces light when x-rays strike it.

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

What is the relationship between the FSS and recorded detail?

To improve recorded detail:

Which of the following has the highest DQE?

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

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

Increasing the OID will:

After this long, CR plates should be erased if unused

What enhances detection of microcalcifications and malignant lesions?

How do we evaluate IR exposure in film-screen radiography?

CCDs posses less light transfer efficiency than CMOS detectors

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

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

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

RAM is:

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

The two different types of FPDs that have been developed:

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

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

The result of low-pass filtering is:

Which of the following refers to a continuously varying quantity?

A system with a bit depth of 16 has:

Each pixel contains a number and represents a/n:

The unit of measurement of recorded detail is the:

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

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

Q2:Recorded detail is also called all except:

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

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

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

This is the Activator in the phosphor layer of the IP

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

This term describes the state of phosphor atoms after exposure

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

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

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 has the highest spatial resolution?

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

The components of a CR system are:

The higher number of pixels in a matrix, the:

filters light before photodetection occurs

The misrepresentation of the size of an object is:

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

Geometric properties refer to:

This is the slowest part of the computer

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

In film-screen radiography, what converts the latent to the manifest image?

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

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

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

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

Penumbra is described by all except: