Unit 1 Exam
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Quantum noise is a result of | show 🗑
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show | has high contrast.
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Normal adult respiration is: | show 🗑
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Making the digital image appear with low contrast, many shades of gray, is done by | show 🗑
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show | modulation transfer function
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show | True
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show | window width.
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show | the percentage of Compton interactions increases.
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Bradycardia indicates a pulse of: | show 🗑
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What refers to the range of exposure intensities an image receptor can accurately detect? | show 🗑
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show | True
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Spatial resolution can be increased by: | show 🗑
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show | shape distortion.
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Causing a patient to become apprehensive of being injured is called | show 🗑
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show | cardiogenic shock.
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Density was the term used to describe "overall film blackeing" for film screen or conventional imaging. What term is used in digital imaging to describe this quality? | show 🗑
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With digital imaging, the ___________ of radiation reaching the image receptor determines the brightness of the image. | show 🗑
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show | elongation.
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show | 50%
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show | False
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Transmission refers to | show 🗑
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show | increased spatial resolution.
smaller pixel sizes
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show | the energy of the incoming x-ray photon.
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Size distortion is also called | show 🗑
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show | Spatial resolution
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The radiographer should evaluate the ____________ value along with the quality of the digital image before determining whether a repeat image is warranted. | show 🗑
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Resolution is typically measured in | show 🗑
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show | Decreased OID and increased SID
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show | latent image.
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show | x-ray tube.
image receptor.
anatomic part.
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Increasing the thickness of the part being imaged results in | show 🗑
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show | more x-ray photons reaching the image receptor.
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show | distortion.
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show | reduced to zero.
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show | are present because of differential absorption.
represent the radiation that was absorbed or transmitted.
makes the anatomic structures visible.
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show | shape distortion.
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show | septic shock.
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Scatter radiation | show 🗑
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If there were no contrast, the radiographic image would include | show 🗑
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show | the percentage of photoelectric interactions decreases.
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Place the digital imaging steps in the correct order, | show 🗑
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The higher the ______________ of a system, the lower the radiation exposure required to produce a quality image. | show 🗑
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Which of the following is a method of describing the strength of the radiation exposure compared with the amount of noise apparent in a digital image? | show 🗑
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show | quantum noise.
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The probability of a Compton interaction is _______________ in bone than soft tissue. | show 🗑
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show | Lungs
Fat
Muscle
Bone
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After processing, there is a image. | show 🗑
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What digital characteristics affects the number of shades of gray available for image display? | show 🗑
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show | pixel pitch.
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show | the Compton effect.
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show | has low contrast and has long-scale contrast.
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show | decreasing the window width (narrow WW)
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show | False
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Violation of confidentiality defines: | show 🗑
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Which of the following refers to the absorption characteristics of the anatomic tissues radiographed and the quality of the x-ray beam? | show 🗑
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show | unintentional misconduct.
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An artifact that is imaged within the patient’s body is a | show 🗑
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show | has minimal effect on the imaging process.
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Radiographic contrast | show 🗑
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