procedures sem1
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| t or f? To change from film to CR, significant changes must be made to the X-ray generating equipment | show 🗑
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| show | False
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| show | True
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| show | Computed radiography
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| Digital images are stored by a computer as what? | show 🗑
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| show | B.
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| show | True
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| T or F? The photostimulable phosphor stores the energy deposited by the X-ray beam in the plate | show 🗑
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| show | True
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| Which of the following is an advantage when viewing a digital image compared to conventional film? A. Wider latitude B. Brightness of monitor is less than a view box C. Monitors need to be replaced | show 🗑
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| show | C.
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| A neural histogram compares the image data to ____ or more predefined histograms. A. 2 B. 3 C. 4 D. 5 | show 🗑
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| How many people can view a digital image on a PACS simultaneously? | show 🗑
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| show | 1982
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| When was DICOM standard 3.0 published ? | show 🗑
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| Workstations designated as diagnostic workstations typically are used only by: A. Radiographers B. Medical physicists C. Radiologists D. Physicians | show 🗑
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| Long term storage of digital images occurs in which type of storage system? | show 🗑
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| A benefit of installing PACS software on computers throughout the medical facility is increased: A. Image detail B. Viewing functionality C. Access D. Image size | show 🗑
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| Prefetching generally occurs at what time of the day? A. The start of the work day B. During the lunch hour C. During the night | show 🗑
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| show | A
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| An advantage of LCD monitors over CRT monitors is that LCD monitors: A. Are more durable B. Lower measurable black levels C. Have less screen glare | show 🗑
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| _______ refers to continuously verying quantity; a ______ system uses only two values that vary discretely through coding. | show 🗑
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| Computer _____ are the software of the computer. | show 🗑
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| To encode is to translate from ordinary characters to computer compatible characters - ______ _______. | show 🗑
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| The electronic circuitry that does the actual _______ and the memory that supports this together are called the _______. | show 🗑
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| show | Working
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| show | Devices
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| Input hardware converts ________ into a form that the computer can use. | show 🗑
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| Scanning the bar code on a PSP plate is extremely important because it links the image data with the correct _______. | show 🗑
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| Which device allows for an increased scanning precision compared with a mechanical arm? | show 🗑
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| In a PSP plate reader, the light guide collects the light and directs it into a _______. | show 🗑
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| PSP plates are erased after processing by exposing the plate to: | show 🗑
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| When using a flat panel detector, the technologist does not touch the : | show 🗑
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| show | ADC
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| What do both a charge-coupled device and a complementary metal oxide semiconductor need to change X-rays into light? | show 🗑
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| show | The image quality is poor
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| A graphical representation of exposure values extracted from an image receptor is known as: | show 🗑
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| show | Rescaling
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| If a PSP plate is processed using the wrong anatomical menu, what could happen? | show 🗑
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| show | C
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| show | D.
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| show | 100%
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| T or F? A pixel is a two dimensional representation of a corresponding tissue volume, known as a voxel | show 🗑
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| Which digital imaging modality uses a laser to scan the image plate before the radiographic image is acquired by the computer and displayed to a computer monitor? | show 🗑
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| show | D
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| show | D.
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| show | 1
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| show | False
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| show | False
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| T or f? DR requires a plate reader for processing of the image | show 🗑
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| Which if the following is an advantage when viewing a digital image compared to conventional film? A. Wider latitude B. Brightness of monitor is less than a view box C. Monitors need to be replaced | show 🗑
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| T or F? Digitally captured images suffer from a toe and shoulder similar to the H&D curve of X-ray film | show 🗑
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| T or F? Soft copy is the term that refers to the output seen on a display screen | show 🗑
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| show | Remnant beam
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| Digital imaging systems have a large dynamic range, which means that they can respond to a wide range of: | show 🗑
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| show | Light photons
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| In an analog to digital converter, the analog input consists of: | show 🗑
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| Which symbols compose the binary language ? | show 🗑
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| show | 256
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| show | Increases
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| Scintillation refers to a material's ability to give off: | show 🗑
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| The acronym PSP stands for photostimulable _______. | show 🗑
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| During processing, image data is released from a PSP receptor after the receptor is struck by _____. | show 🗑
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| Direct image formation converts X-rays into _______. | show 🗑
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| show | DELs
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| show | Noise
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| CCDs are suitable for low dose imaging because they: | show 🗑
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| show | Quality
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| show | Larger pixel size and lower spatial resolution
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| show | DELs
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| The nyquist theorem states that for a given spatial resolution, you must sample the signal at ___ times the desired sampling frequency | show 🗑
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| show | 50, 100
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| What is a visual cue that a digital image is underexposed? | show 🗑
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| ______ ______ is determined by the percentage of energy that strikes a receptor material that is absorbed by the receptor | show 🗑
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| show | C.
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| In digital imaging, _____ is determined by pixel size. | show 🗑
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| Which of the following affects the number of shades of gray for a digital image? A. Matrix size B. Field of view C. Bit depth | show 🗑
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