,
, Chapter 01: Introduction to Imaging and Radiologic Sciences
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Adler: Introduction to Radiologic and Imaging Sciences and Patient Care, 8th Edition
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MULTIPLE CHOICE rf
1. The use of x-rays to create a medical image on patients is referred to as
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a. electrocardiography.
b. radiography.
c. sonography.
d. magnetic resonance imaging. rf rf
ANS: B rfrf
.
REF: p. 4 rf
2. Particular care must be taken when using radiation for medical imaging. This is the result of r
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adiation’s ability to create in human tissue and possible biochemical changes.
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a. ionizations
b. radio waves rf
c. sound waves rf
d. thermal changes rf
ANS: A rfrf
Some forms of electromagnetic energy, including x-
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rays, have the ability to ionize atoms in matter. These ionizations have the ability to disrupt th
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e composition of matter and are capable of disrupting life processes. Special protection shoul
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d be provided to prevent excessive exposure to ionizing radiation.
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REF: p. 3 rf
3. In the diagnosis of patient disease states, physicians can select from an array of medical diag
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nostic modalities. A few of these involve the use of ionizing energy to create a medical imag
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e. If a physician is concerned about the use of ionizing radiation, he or she may choose to ord
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er any of the following diagnostic modalities EXCEPT
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a. thermograms.
b. medical sonography. rf
c. radiography.
d. magnetic resonance imaging. rf rf
ANS: C rfrf
Radiography involves the use of x- rf rf rf rf rf
rays for the production of medical images. Medical procedures such as thermograms, sonogra
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ms, and magnetic resonance scans use nonionizing energy forms and consequently do not pro
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duce ionizations in human tissue. They are regarded as nonionizing modalities for imaging an
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d offer excellent alternatives to physicians concerned about radiation exposure to patients.
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