Final Exam from All Digital Modules
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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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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| In analog imaging, the intensifying screen converts x-rays into: | show 🗑
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| In an analog-to-digital converter, the analog input consists of: | show 🗑
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| show | 0, 1
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| show | 256
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| As the pixel size decreases, the recorded detail: | show 🗑
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| Scintillation refers to a material’s ability to give off: | show 🗑
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| show | Phosphor
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| show | Red Laser Beam
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| show | Electrons
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| Individual components of a digital image are collected in areas of a thin-film transistor known as: | show 🗑
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| show | Noise
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| show | Respond to low light levels
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| show | Quality
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| Selecting a lower sampling frequency during image processing results in: | show 🗑
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| For flat-panel detectors, the spatial resolution is determined by the size of the: | show 🗑
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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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| A digital receptor can produce an image that appears acceptable on a display monitor, but that was produced between: | show 🗑
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| show | Increase in image noise
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| Receptor blur is the result of: | show 🗑
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| When a digital fluoroscopy unit’s magnification button is used, the resulting magnification is due to a decrease in the size of the: | 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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| show | Rotating Mirror
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| show | Photomultiplier Tube
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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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| show | A Scintillator
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| What happens when a PSP plate reader is unable to identify the collimated borders of the image? | show 🗑
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| show | Histogram
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| show | Prosthesis
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| Neural analysis compares exposure data from the receptor with: | show 🗑
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| Visual cues that an image has been overexposed are not easily seen in digital radiography because of: | show 🗑
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| The acronym EI is a vendor-neutral term that stands for exposure: | show 🗑
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| All of the following are examples of EIs except: a) S number b) DQE c) lgM d) REX | show 🗑
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| The addition of a metal prosthesis into the image data set affects: | show 🗑
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| show | the EI number might display improperly.
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| show | Radiologist
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| Which of the following is an EI used in flat-panel radiography? A)EXI, B)S number, C) DQE, D)lgM | show 🗑
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| show | Enters the patient's skin
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| show | Artifacts removed during the process
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| show | Fluorescent Screen
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| An advantage of LCD monitors over CRT monitors is that LCD monitors: | show 🗑
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| An LCD monitor’s resolution is determined by: | show 🗑
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| show | 16:09
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| Which of the following increases as the matrix size of a display monitor increases? | show 🗑
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| show | How close the pixels are to each other
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| To accurately display the gray scale in a radiograph, the display monitor must be able to demonstrate at least how many distinct shades of gray? | show 🗑
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| show | Contrast Resolution
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| show | 171 cd/m2
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| How many images/second does it take CRT monitors to refresh? | show 🗑
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| show | Persistence
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| show | Luminance
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| show | Permanent Patient Record
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| If an image is acquired with the orientation of the image receptor upside down, what modality workstation tool can be used to orient the image the correct way? | show 🗑
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| show | Annotation
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| When an image is obtained on several imaging plates that need to be combined later into one image, the process is referred to as: | show 🗑
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| Cassettes that are specially designed for scoliosis exams contain how many PSP plates? | show 🗑
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| Using a workstation to cover the unexposed area of an image with a black border is called: | show 🗑
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| Window and leveling on a workstation changes the digital image’s: | show 🗑
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| show | Low development temperature
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| show | Patient Motion and Geometric Factors
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| Excessive radiation is defined as using more than ________ times the level of radiation needed to produce a diagnostic quality image. | show 🗑
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| show | Exposure Field Recognition Error
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| Improper alignment of a radiographic grid during digital imaging can lead to improper: | show 🗑
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| show | Outside the collimated field
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| Inappropriate brightness on a digital image can be caused by: | show 🗑
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| show | Saturation
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| show | The patient
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| show | Angular relationship of tube, part and Image receptor
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| Primary cause of quantum noise is: | show 🗑
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| show | Exposure
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| show | Gross underexposure
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| To reduce errors from collimation, the current recommendation is to: | show 🗑
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| show | White
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| Most artifacts that appear when using cassette-based digital imaging are caused by: | show 🗑
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| Most artifacts that appear when using cassette-less systems are caused by: | show 🗑
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| show | Appear along the entire axis of the image and on every imaging plate.
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| show | White and linear
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| An artifact that presents as a wavy appearance in a localized area of an image is due to: | show 🗑
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| In the abscense of a PACS, digital images can be: | show 🗑
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| show | More than 10
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| The standard process for transmitting medical images and their associated information is known by the acronym: | show 🗑
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| show | SCU
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| show | Collect and display orders
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| show | HL7
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| show | Radiologists
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| show | Archive
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| show | 25MB
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| show | CT Scanner workstation
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| show | Storage Device
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| Prefetching generally occurs at what time of day? | show 🗑
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| show | Access
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| A typical PACS platform receives images from: | show 🗑
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| A computer network limited to a relatively small geographic area is known as a: | show 🗑
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| Every computer on a network has a unique indentifier known as a(n): | show 🗑
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| show | Router
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| A firewall controls traffic between a single computer and a network in an environment with no: | show 🗑
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| The major challenge with burning images to a disc to share the image information with another facility is: | show 🗑
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| show | Interprets images off-site
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