In relation to x-ray imaging, which of the following statements is true? Choose one answer. a. The linear attenuation coefficient of a material is directly proportional to its half value thickness. b. For clinically useful x-rays, lead has a greater half value thickness than soft tissue. c. The intensity of an x-ray beam decreases exponentially as it passes through tissue. d. The intensity of an x-ray beam increases exponentially as it passes through tissue. e. Good contrast media are generally poor absorbers of X-rays. and Why??
Compton effect
The incoming photons' energy must be in the range of an X-ray frequency to generate the Compton effect. The electron does not lose enough energy that reduces the wavelength of scattered photons towards the visible spectrum. As a result, with visible lights, the Compton effect is missing.
Recoil Velocity
The amount of backward thrust or force experienced by a person when he/she shoots a gun in the forward direction is called recoil velocity. This phenomenon always follows the law of conservation of linear momentum.
In relation to x-ray imaging, which of the following statements is true?
Choose one answer.
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a. The linear attenuation coefficient of a material is directly proportional to its half value thickness. |
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b. For clinically useful x-rays, lead has a greater half value thickness than soft tissue. |
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c. The intensity of an x-ray beam decreases exponentially as it passes through tissue. |
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d. The intensity of an x-ray beam increases exponentially as it passes through tissue. |
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e. Good contrast media are generally poor absorbers of X-rays. |
and Why??
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