Bushong Chapter 15
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| The range of exposure over which a film produces an image if the definition for? | show 🗑
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| Doubling the mAs on an inversely proportional system will result in: 1. Half the brightness level 2. Double the exposure index 3. A decrease in the exposure index | show 🗑
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| Which radiographic image capture method uses chemical development to produce the manifest image? | show 🗑
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| The exposure latitude of digital projection radiography responds in a _______ manner | show 🗑
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| T/F: If grid lines are present and run parallel to the scanning laser, the image will not have the moire pattern present. | show 🗑
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| show | False
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| The arrangement of pixels in rows and columns is known as? | show 🗑
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| show | True
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| The active layer in a PSP plate is usually made of phosphors from what family group? | show 🗑
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| show | Reflective
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| The laser excites the electrons trapped in the phosphor centers so that they energy may be released in the form of _______ | show 🗑
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| What device in the reader detects the light being released from the PSP plate during reading? | show 🗑
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| show | 1. After every PSP plate is read. 2. By flooding it with a bright light. 3. Manually by selecting the proper eraser method.
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| T/F: Too much mAs will cause quantum mottle | show 🗑
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| show | Wide
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| show | Brightness
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| show | High
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| Another term for imaging noise is? | show 🗑
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| T/F: The greater the exposure to the plate, the greater the intensity of the light is emitted from the plate during the reading. | show 🗑
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| show | False
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| show | Fluorescence
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| Which of the following are advantages of digital systems over film-screen systems? 1. Increased dynamic range 2. Higher spatial resolution 3. More contrast resolution | show 🗑
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| show | A pixel
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| What is spatial resolution in digital imaging is determined by? | show 🗑
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| Quantum mottle on an image is also referred to as? | show 🗑
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| How would dirt on the light guide of a CR reader appear on a digital image? | show 🗑
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| show | To assess the level of detector noise in the system.
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| show | 8
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| The active portion of a CR imaging plate is? | show 🗑
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| When was CR invented? | show 🗑
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| When was CR introduced to the medical field? | show 🗑
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| T/F: CR is the most widely used from of digital radiography. | show 🗑
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| What does PSP stand for? | show 🗑
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| What does SPS stand for? | show 🗑
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| When is it called PSP and when is is called SPS? | show 🗑
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| show | 5
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| What are the 5 layers of the PSP plate? | show 🗑
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| What is the purpose of the protective layer? | show 🗑
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| show | It is the active layer where the latent image is formed.
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| show | To increase efficiency.
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| show | To provide support.
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| What is the purpose of the back layer? | show 🗑
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| show | Lead (Pb)
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| What 2 things are the photostimulable phosphors comprised of? | show 🗑
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| What are the chemical symbols for barium fluorohalide with europium? | show 🗑
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| What is the role of the europium? | show 🗑
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| Photostimulable phosphors emit light when they are stimulated by?? | show 🗑
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| Why are phosphors linear versus "block shape"? | show 🗑
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| What is the first step in the process of latent image formation? | show 🗑
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| show | Outer shell e- becomes excited, leaves it orbit while simultaneously producing light.
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| show | The excited e- hovers just above its orbit causing a void and resulting in an unstable atom.
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| show | When the e- return to its orbit light is emitted again.
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| When can electrons return to their orbits? | show 🗑
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| show | 50%
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