imaging Dakota
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| show | Sends light in a forward direction
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| show | True
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| show | More energy is lost.
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| show | False
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| show | 670-690
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| Flat-panel detectors that use indirect conversion technology convert: | show 🗑
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| The laser scans the imaging plate in a __________pattern | show 🗑
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| show | imaging plate
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| show | Barium Fluorohalide
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| show | the use of a storage phosphor plate
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| A device that acts like a switch to send electrical charges to the image processor in a direct conversion flat-panel detector is known as a ________transistor. | show 🗑
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| show | Active
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| Photodiode converts light energy into electrical current. | show 🗑
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| show | Blue
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| The indirect conversion system that requires optical coupling and image size reduction is known as a: | show 🗑
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| show | The ability of a detector element (del) to absorb x-rays or light: its sensitivity to photons.
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| Active Matrix Array | show 🗑
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| show | A flat, compact light sensing device that uses a single layer of silicon as its sensitive surface, used for recording images.
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| show | Material that allows the efficient transfer of heat or electricity.
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| Del | show 🗑
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| show | The percentage of a detector element's area dedicated in photon absorption.
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| Which of the following measures best determines the performance of a flat-panel detector? | show 🗑
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| The amount of detail present in any image is known as ________resolution. | show 🗑
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| show | a-Se
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| The x-ray absorber typically used in direct capture DR is a: | show 🗑
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| show | Analog to digital converter.
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| show | Fiber optics
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| show | Picture element
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| show | light spread
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| The purpose of the barcode label is to identify the ______. | show 🗑
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| Scintillators are phosphors that: | show 🗑
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| show | absorb x-rays and produce electrical charges.
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| show | amorphous silicon detector
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| show | True
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| Which of the following is not considered a scintillator? | show 🗑
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| The imaging plate reader uses a laser to scan the imaging plate, releasing the energy stored in the conductive layer as ______ light. | show 🗑
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| Fluorescence | show 🗑
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| show | Light amplification by stimulated emission of radiation
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| Matrix | show 🗑
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| Phosphorescence | show 🗑
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| show | False
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| show | photodiodes
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| show | Focused laser light
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| CR imaging plates are erased by flooding the plate with __________. | show 🗑
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| show | more energy is lost
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| show | LUT or look up table
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| show | loss of contrast
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| show | 1 and 2 only
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| Describe Exposure Latitude | show 🗑
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| Describe dynamic range | show 🗑
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| show | too low kVp
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| When a single 15% step increase in kVp is accompanied by a halving of the mAs, the absorbed dose to the patient is: | show 🗑
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| which of the following groups of technical factors will deliver the greatest patient dose? | show 🗑
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| Quantum mottle is not a form of noise | show 🗑
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| show | Shape distortion
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| show | True
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| show | Noise
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| Exposure factors of 2 mAs and 75 kVp were used for a particular part. Which of the following changes would result in twice the exposure to the image receptor | show 🗑
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| show | ensure that adequate signal reaches the detector
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| By reducing the mAs by 1/2 and increasing kVp 15% there is a reduction in ESE and absorbed dose by | show 🗑
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| show | mAs and patient dose are directly proportional
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| show | False
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| show | 13 cm
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| An increase in kilovoltage will | show 🗑
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| show |
1,2 and 3
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| Describe subject contrast | show 🗑
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| show | the appearance of mottle
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| show | 8-10 times
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| show | Dose creep
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| show | all of these
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| In digital imaging, mAs selection has an effect on 1. receptor exposure 2. patient dose 3. brightness | show 🗑
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| show | exposure latitude
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| show | True
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| Describe what an Exposure Indicator is. | show 🗑
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| Describe appropriate selection of exposure factors for a digital system | show 🗑
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