PACS 215 final

What is an agreed-upon set of rules that data use to move through a network?

When X-rays strike a photostimulable phosphor material, what is released?

What is the largest circuitry board inside the computer?

Spatial resolution in a digital imaging system is dependent on pixel size.

Which type of noise occurs when pixels may not work in a chip?

Which of these is an example of a thin client??

Which of the following are types of computer mice?

Refers to the image that exist on film after that film has been exposed but before it has been chemically processed

Which of the following can work independently and process / manage its own files but still share printing & storage

Which of the following has a single conductive wire surrounded by a grounded shield of braided wire?

The amount of tissue included in the image is referred to as:

Which of the following is the most delicate network communication medium?

A CCD does all of the following except:

As the signal-to-noise (SNR) increases, the noise _____ and patient dose ______

The two types of monitors are CRT(cathode ray tube) and LCD(liquid crystal display)

The insulating layer in a CCD chip is the

The network card is designed to take the burnt of the force during a power surge

system that uses scintillators that convert X-ray - light, light - electric charge, and store the charge in capacitors

Which of the following are more susceptible to noise, has a lower light sensitivity, uses little power , and inexpensive

Which type of absorbing material requires a capacitor as the storage element?

Which connection device is similar to a telephone wire, usually consists of 4 twisted pairs of copper insulated wires.

Which PACS device stores the historic image data to be viewed along with current studies?

Exposure latitude is slightly greater with digital imaging than with F/S imaging

A graphical representation of a digital image is called a

What does the acronym MIMPS stand for?

Which type of monitor is the most common in hospitals?

The layer in a CCD chip that contains the electron gates is the :

Aliasing occurs when the spatial frequency is greater then twice the nyquist frequency

In which type of network does a centralized computer have control over the entire network?

Refers to the image that exist on the film after exposure and processing

The usual signal is determined during which part of image processing?

The number of electron/hole pairs is related to the amount of:

The measurement of the radiation that was incident on the IR for a particular exposure is known as:

Matrix size can change without affecting the FOV

Which of the following are not considered scintillators?

In which system architecture is the archive the central repository for all images?

How many bits are in a single byte?

The nyquist theory states that the sampling frequency must be less than twice the frequency of the input signal

The higher the NPS the _______ the noise is for a specific detector.

What device runs the start-up instructions during boot-up of the computer?

On a server based network, each computer is considered equal

What format must images be in order to be sent throughout the image viewing system?

Dynamic range is the ability of a digital imaging system to respond to varying level of exposure.

Which of the following measures the efficiency of a system to convert the X-ray input signal into a useful output

PACS is considered a LAN

Which of these is considered peer-peer network?

Which of the following are network classifications based on geographical location?

The active layer in a PSP plate is usually made of phosphors from what family group?

Which of the following is a series of connections, controllers, and chips that creates the information highway .

Another name for a CPU is microprocessor

An image formed by recording a continuous changing signal is known as:

What is the simplest network hardware device that can be used to connect several computers?

Which of the following is used as a photodetector ?

What workstation function will allow the user the ability to arrange a certain number of images per monitor/modality?

A generic term that is used to describe a programmable electronic device that can store,retrieve, and process data?

Gain calibration will remove inherent detector artifacts from an image

Most cross sectional images is read on 1k square monitor, and in digital images are read on at least a 2k monitor.

Which layer of the PSP plate sends light in a more foward direction when released in the reader?

What is accomplished by limiting the number of pixels in a neighborhood of the matrix.

Which layer of the PSP plate reduces static electricity

Similar to a hub, but it sends data only to those devices to which the data are directed

What keeps the radio frequencies generated within the computer electronics from interfering with outside devices?

What process is used to normalize an image that has been taken with too great an exposure?

The best component in a digital system will determine the resolution in a digital image.

Which of the following have a exposure response that is : nonlinear, narrow exposure latitude

Which of the following have a exposure response that is: Linear, wide exposure latitude

The thinner the phosphor layer , the greater the sharpness of the image

What will enable the PC to connect to other PCs

LAN= local area network & WAN= wide area network

The laser excites the electrons trapped in the phosphor centers so that the energy may be released in the form of

An OS is the software that controls the computer hardware and acts as a bridge between applications and hardware.

Which is considered the most versatile type of port found on the computer?

Spatial frequency resolution is controlled by:

Overexposure will reduce the contrast resolution

What provides the interface between the computer and the network medium?

Random access memory will retain stored information after the computer has been shut down

Which type of noise is created by the lack of light photons from the scintillator

Digital images begin as analog signals that are recorded and turned into electrical signals, then digitized.

Digital systems are less sensitive to scatter radiation than F/S systems

The difference between the actual exposure and the target exposure is known as the:

Offset correction is used to remove inherent signal that remains in a detector

Which of the following is used to move medical images from the modality to the viewing/storage device?