Digital Imaging Practice Test

These questions are part of the practice quiz. Start practicing

• Random access memory will retain stored information after the computer has been shut down.
• Dynamic range is the ability of a digital imaging system to respond to varying levels of exposure. The statement is?
• The gate layer in a CCD chip is typically made of polysilicon.
• What is done after the installation of new equipment to determine if the equipment is performing to vendor specifications?
• What term describes a graphical representation of a digital image?
• The look-up table that is used to determine the brightness and contrast of an image is unique for each anatomic part.
• The amount of tissue included in the image is referred to as?
• The number of electron/hole pairs in a CCD is related to the amount of:
• Printer image quality is of no importance in a digital environment.
• Which term refers to information that can be justified as being correct or true?
• Monitor type and configuration are of no concern when implementing a PACS in a radiology department.
• In CMOS technology, which transistors are used to form the electrically controlled gate?
• What PACS CQI activity documents images that are of poor quality?
• In radiology quality management, which activity is primarily about verifying that products meet specifications after production?
• Which of the following databases help determine patient risk?
• Overexposure will reduce the contrast resolution of the image.
• The only way to get two overlying images is to double expose the cassette.
• Which statement best describes the relationship between overexposure and image quality in PSP imaging?
• If grid lines are parallel to the scanning laser, the moiré pattern will not be present.
• Continuous quality improvement tends to focus on the people of the service rather than on the process.
• What provides the interface between the computer and the network medium?
• Which component is primarily responsible for managing the archive's master database and indexing?
• In radiology quality management, which activity focuses on planning and systematic actions to ensure quality is built into processes?
• In PACS CQI, which activity is specifically aimed at identifying images that cannot be interpreted due to poor quality?
• Which term describes a health information data warehouse used for analysis rather than patient care?
• Which instrument is used to measure the luminance of a monitor?
• Which term describes the difference between actual exposure and the target exposure?
• What device runs the start-up instructions during boot-up of the computer?
• Which of the following could be considered a network classified by geographic scope?
• Which component serves as the central repository for imaging data in a PACS environment?
• What is a primary purpose of quality control in a PACS environment?
• Digital systems are less sensitive to scatter radiation than film/screen systems.
• Which processing step is used to create a single panoramic image from multiple adjacent images?
• What is an agreed-upon set of rules that data use to move through a network?
• A thorough cleaning of the light guide by the technologist will remove white lines parallel to the plate travel.
• Which PACS device stores the historic image data to be viewed along with current studies?
• Computed Radiography uses which of the following to capture the image?
• Aliasing occurs when the sampling frequency is not greater than twice the frequency of the input signal.
• What can be used to determine if the monitor is displaying any distortion over the display?
• Which storage configuration is directly attached to a network?
• In which PACS architecture is the archive the central repository for all images?
• Which statement accurately reflects a typical PACS setup?
• Which statement about CCDs is incorrect?
• Which company first introduced PSP imaging commercially in the United States?
• The laser excites electrons trapped in phosphor centers so the energy may be released as what?
• What term describes a solid material doped with impurities to become highly conductive?
• PACS stands for what?
• Is the look-up table for brightness and contrast unique for each anatomical part?
• The insulating layer in a CCD chip is the:
• What is the effect of automatic rescaling in digital projection radiography?
• The digital radiographic image capture method that uses an X-ray absorber material coupled with a thin film transistor, CMOS, or a CCD to form the digital image is:
• Which technology eliminates limitations of handwritten records by enabling electronic storage and retrieval to improve patient care?
• Which component detects the light converted to an electrical signal in a PSP reader?
• The active layer in a PSP plate is typically composed of phosphors from which family?
• In dry imagers, which factor is used to reveal the latent image on the film?
• Which of the following is the most delicate network communication medium?
• Which act first addressed patient information security?
• Which of the following are types of computer mice?
• Dark line artifacts can be caused by too much kVp in an exposure.
• Which memory type is volatile, losing stored data when power is removed?
• What part of the archive contains the master database of everything contained within the archive?
• Which statement is true according to image processing principles?
• Which term describes a high-speed storage network that provides access to consolidated block-level data?
• Which storage configuration is a dedicated network of storage devices that provides shared access over a network?
• Which processing parameter will put together multiple images into one single image for display?
• The difference between the actual exposure and the target exposure is known as?
• The signal from detected photons is ultimately stored in capacitors prior to readout.
• In which type of workstation can changes not be made to the patient demographics of an image set?
• Which of the following are considered long-term storage devices?
• Digitally placed anatomic markers can always determine the correct anatomic side of the patient.
• Which statement about CMOS detectors is true?
• Which statement about image quality evaluation in PACS is most accurate?
• Which layer on the PSP plate is responsible for reducing static electricity?
• Which term describes ongoing processes to improve imaging workflows and reliability in digital imaging systems?
• During which part of image processing is the useful signal determined?
• What organization accredits most hospitals in the United States?
• Too much mAs will cause quantum mottle.
• Shuttering the digital image will reduce the exposure to the patient.
• Which system is primarily used to manage radiology workflow information, including patient demographics and orders?
• Artifacts that look metallic but are not present on the patient or table are most likely caused by which issue?
• Window width controls the brightness of the image on the display.
• What does NAS stand for in storage terminology?
• The exposure latitude of digital projection radiography responds in a _____________ manner.
• The active phosphor layer used in PSP plates belongs to the Ba fluorohalide family.
• Too little mAs can cause which artifact?
• Which processing technique will amplify particular known frequencies in an image while suppressing others?
• Contrast resolution is a digital system's ability to?
• The best component in a digital system will determine the resolution in a digital image.
• Which term describes storage accessible over a network and used for sharing files among multiple devices?
• The statement 'Dynamic range is the range of exposures the system can handle without saturating' is:
• What generic term describes a programmable electronic device that can store, retrieve, and process data?
• Which component is primarily responsible for managing the archive's metadata and providing a master index?
• Which modality uses photostimulable phosphor plates to capture the image?
• In a CCD imaging system, the signal charge is stored in which component before readout?
• When X-rays strike a photostimulable phosphor material, _____________ is released.
• Which device is responsible for linking a computer to the network medium?
• Which activity would you expect to find in a PACS CQI program?
• Which of the following are network classifications based on geographic location?
• The PSP plate is erased.
• Which device converts analog radiographic film into digital images for electronic archiving?
• Which term represents observations or symbols of differences in nature?
• The measurement of the radiation that was incident on the image receptor for a particular exposure is known as?
• Which statement best describes the purpose of the computer case in terms of radio frequency interference?
• Printer image quality in a digital workflow: which statement is most accurate?
• Which is used to move medical images from the modality to the viewing/storage device?
• The statement 'Contrast resolution relates to gray-level differences' is:
• Which of the following measures the efficiency of a system to convert the X-ray input signal into a useful output image?
• Which of the following is NOT a barrier for informatics?
• Which best defines a nondiagnostic image?
• Which advanced image manipulation function allows the technologist to join multiple images together as one?
• The network card is designed to take the brunt of the force during a power surge.
• The arrangement of pixels in rows and columns is known as?
• Informatics began in which decade?
• Which term refers to the measurement of radiation incident on the image receptor for a given exposure?
• The format required for exchanging medical images and related data across devices is:
• A systematic observation and assessment of different aspects of a radiology department would be what kind of activity?
• Which two databases are cited as helping determine patient risk?
• The layer in a CCD chip that contains the electron gates is the:
• Which RAID level is often seen in PACS archives?
• In what format must images be in so that they can be sent throughout the image viewing system?
• How many bits are in a single byte?
• A review workstation is typically used for viewing studies without modifying patient demographics.
• The first conversion step in the scintillator-based chain described is to convert X-rays into light.
• In dry imaging systems, which factor is used to develop the latent image on film?
• The energy released by the excited phosphor centers is emitted as which form of energy?
• The term RAID stands for ______________.
• Which type of monitor is most common in hospitals?
• Which testing is performed after installation to determine if equipment meets vendor specifications?
• Hanging protocols in PACS are used to automate the arrangement of images on monitors per modality.
• Which component stores the firmware that contains the first instructions executed when a PC starts?
• Which field focuses on applying information technology to manage and communicate medical information?
• An image formed by recording a continuous changing signal is known as?
• The Nyquist theorem states that the sampling frequency must be less than twice the frequency of the input signal.
• Which one of the following does not describe a collection of an individual's health information?
• In a web-based system, images are sent directly from the modality to a display workstation for image interpretation.
• What workstation function will allow the user the ability to arrange a certain number of images per monitor per modality?
• Between CCDs and CMOS, which technology is more susceptible to noise, has lower light sensitivity, uses very little power, and is inexpensive to manufacture?
• Which network communication medium has a single conductive wire surrounded by a grounded shield of braided wire?
• Spatial resolution in digital imaging is dependent on pixel size.
• The radiographic image capture method that uses chemical development to produce the manifest image is:
• CQI in a imaging informatics environment focuses on:
• Which device in the reader detects the light released from the PSP plate during reading?
• A comprehensive set of activities designed to monitor and maintains systems thar produce a product would be what kind of activity?
• Which act is known for protecting health information privacy and security?
• Which of the following is a quality control activity performed in a PACS environment?
• The acronym PACS stands for which term?
• In storage architectures, what term refers to a distinct level of storage defined by performance and cost?
• In CQI, which activity helps documents and flag nondiagnostic images for possible retake?
• Which term describes the use of knowledge and critical thinking to make sound decisions?
• What does PACS stand for?
• Which image analysis step is used to help determine the useful signal by evaluating the distribution of pixel intensities?
• Which is considered the most versatile type of port found on a computer?
• Which term describes the ability to transmit and use consistent information across systems?
• What is the largest circuitry board inside the computer?
• Which statement about RAM is true?
• A system that used scintillators that convert X-rays to light, light to electric charge, and store the charge in capacitors is known as a:
• The statement “Patient demographics are unimportant because the RIS will automatically identify all digital images” is:
• Which of the following is commonly a QC activity in PACS?
• Digital right and left markers should be used to indicate the anatomic side imaged.
• What term is used to describe a layer of archive storage?
• Which layer of the PSP plate directs emitted light toward the reader?
• On a server-based network, each computer is considered equal.
• Which layer of the PSP plate tends to emit light in a forward direction when read?
• In a flat-panel digital radiography detector, the absorber is coupled to what element to form the image?
• The barcode label on a PSP plate is used by the reader to identify the plate.
• Which advanced image manipulation function allows the radiologist to view several different anatomic planes from the original acquired sagittal images?
• What part of the archive contains the physical storage of images within the archive?
• What is the simplest network hardware device used to connect several computers?
• What device is used to measure the luminance of a monitor?
• What device is used to scan an analog X-ray film into a PACS?
• Which would be considered a QC activity in PACS?
• In which type of network does a centralized computer have control over the entire network?
• In digital projection radiography, what process is used to normalize an image that has been taken with too great of an exposure?
• What helps prevent radio frequencies generated inside computer electronics from interfering with outside devices?