Informatics final part ONE

Originally, teleradiography incorporated ____ to transfer radiographic images

A printer is a type of ____ device

Early picture archival and communication systems (PACS) were first developed

Low-pass filtering is also known as

CsI detectors use

The earliest CT of the head took several hpurs to acquire a single slice of information

Aspect ratio is

One of the early goals related to the development of PACS was to

Loss of detail in a adigitally processed image

Window width controls the ratio of black and white, also known as

The nyquist theorem states that the

Cracks in the imaging plate can be caused by

Changing the slop of the look-up table graph will increase or decrease

In reference to PSP image capture, to release the latent image, which of the following devices is scanned over the psp?

Demagnification is

In which decade was MRI first introduced?

The exposure indicator number is

Which of the following statements is false?

Flat-panel detectors that use indirect conversion technology convert

Critical characteristics of a digital image include all of the following except

An archive query retrieves images from the PACS based on any of the following except

Detector performance is measured with all of the following except

It is possible to achieve an MTF of 100%

The process of joining two or more iamges into one continuous image is known as image

The ability of an imaging system to demonstrate small details of an object is known as

Which modality was the first to use the principle of digital imaging?

Response rate refers to the amount of time it takes the crystal to go

Effort to display the pixels for the area of interest when exposure is greater or less than what is needed to produce

Failure of the reader to find the collimation edges of an image

PSP imaging technology acquires an image through

Which of the following is NOT a type of USB port?

The reflection of ambient light can be problematic with monochromatic monitors

Indirect conversion in flat-panel detectors is a ___ step process

How dark or light a digital image appears on a display monitor is known as

A histogram displays the useful signal by locating

A perfect image processing system would have an MTF of

How many bits make up four bytes?

How many bytes are needed to store one alphanumeric character?

The CPU is

PSP imaging plates are erased by flooding the plate with

The _____ converts x-ray energy directly to a digital electrical signal

Indirect capture FPDs converts absorbed x-ray energy into visible light

A look-up table is NOT used as a reference to

Series of connections, controllers, and chips that create the information highway within the computer system is called

The layer of the imaging plate that traps electrons during exposure is the ____ layer

The window level controls image

Gain calibration will remove inherent detector artifacts from an image

When insufficient light is produced by the imaging plate phosphor, the image will

Deviation index is the difference between ____ and ____ expressed in logarithmic fashion

When the imaging plate is irridated, electrons are stimulated in the ____ layer

Raw data used to form the image histogram are compared with

KVP should be chosen

A detector in which each pixel has its own amplifier is known as a

In CsI detectors

Early reconstruction of raw CT data took a few _____ to form a recognizable image

The ability of a digital system to display subtle changes in shades of gray is called

The more light spread, the ____ the MTF

Who was the first to incorporate digital imaging with the CT scanner?

Binary code is a computer language based on

CCDs use more power than CMOS

Which of the following digital detector technologies was devloped by NASA?

A barcode reader is a type of ____ device

Which of the following is an analog display port?

The size of a the pixel is determined by the

All of the following are major operating systems except

Each square in a matrix is called

Which two modaltiies could easily be converted to digital imaging properties?

The higher the resolution, the less information that can be displayed on the monitor

The higher the display's resolution, the more pixels present

_____ turn semi-conductors into full electrical conductors

If all of the shades were left in an image after processing, the contrast would be

The efficiency of a system to convert x-ray input signal into a useful output is known as

The first full-scale PACS was installed in 1993 in

Magnificationof the entire image at the workstation is termed

When compared with a CMOS, CCDs

The measurement for radiaiton that was incident on the image receptor for a particular exposure is known as

Photconductors are materials that

Which statment best describes a charge-coupled device (ccd)?

A device that includes a photosensitive array and small pixels that convert light into electrical charges is known as a

The shape of the histogram is anatomy specific

DICOM is a standard that allows imaging modalities and PACS to communicate in the same language

Scintillators are phosphors that

A CD can hold more data than a DVD

It is acceptable to replace collimation with shuttering

Air kerma is the measurement of radiation energy absorbed in a unit of air

The operating system software acts as a bridge between applications and hardware

Images should be marked only with computerized markeres

Which of the following does not detemine PSP resolution?

The collection of connectors that link the PC to various peripherals is known as

Changing the steepness of the exposure gradient curve

The longer an image is stored in the PSP plate, the

Input of annotation for identification of the patient's left or gith side

An image manipulation process that fills in the background so that it is darkened is known as

Which of the following has most commonly been the slowest part of a PC?

The number of bits per pixel is known as bit

The indirect conversion detector system that requires optical coupling and image size reduction is known as a

BIOS is an abbreviation for basic input'out system