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Imaging Terminology Test

Enter the letter for the matching Definition
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1.
Contrast
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2.
Echogenicity
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3.
Tesla
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4.
Anisotropy
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5.
MRI Unsafe
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6.
MRI Safe
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7.
Artifacts
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8.
Hyperechoic
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9.
Echoic
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10.
CT Scan
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11.
MRI Conditional
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12.
Resolution
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13.
Dosimeter
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14.
Gradient Field
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15.
Time Gain Compensation (TGC)
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16.
SAR (Specific Absorption Rate)
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17.
MRI
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18.
Scan Time (SCT)
A.
Variation of the strength of the magnetic field over a specific period of time measured in Tesla per second or T/sec.
B.
The total scan time is the time required to collect all data needed to generate the desired images.
C.
Degree of difference between the light and dark areas.
D.
Instrument that detects and measures exposure to ionizing radiation.
E.
An ultrasound artifact, notably in muscles and tendons, which causes the echogenicity of a structure changes when the transducer is angled obliquely.
F.
Advanced diagnostic imaging technique that produces detailed pictures of the tissues of the human body using a magnet and RF energy (radio waves) to see inside the body
G.
Region in an ultrasound image in which the echoes are stronger (whiter) than normal or than surrounding structures.
H.
Under specific conditions of use, safe in the MR environment.
I.
Ability to compensate for the attenuation of the transmittal beam as the sound wave travels through tissue in the body.
J.
Refers to echo.
K.
False features in the image produced by the imaging process.
L.
Advanced X-ray technology that produces a sequence of detailed cross-sectional 3-D images of the body.
M.
Unit of measurement (T) to determine the strength of a magnet.
N.
The capacity of a structure in the path of an ultrasound beam to reflect back soundwaves. The specific terminology is used to describe the characteristics of images in ultrasound.
O.
Presents unacceptable risks in the MR environment.
P.
Ability to distinguish two close objects as separate. In simple terms, it provides clarity to the ultrasound image.
Q.
Amount of RF energy absorbed by the body during an MRI scan measured in Watts per kilogram or W/Kg.
R.
Presents no known hazards resulting from exposure to any MRI environment.
Type the Term that corresponds to the displayed Definition.
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19.
Producing ultrasound echoes equal to those of neighboring or of normal tissues.
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20.
An X-ray of the spinal cord after injection air or a radiopaque substance into the subarachnoid space.
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21.
Agent that enhances differences between anatomic structures.
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22.
An electronic device used to produce a fluoroscopic image with a low-radiation exposure. A beam of X-Rays passing through the patient is converted into a pattern of electrons in a vacuum tube.
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23.
The change in a beam of radiation or sound wave as it passes through matter. The intensity of the beam or sound wave decreases as its depth of penetration increases.
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24.
An interventional diagnostic test used to help identify the source of back pain and to guide the treatment of abnormal discs.
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25.
Sends high frequency sound waves into the body, then receives the sound waves back.
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26.
Measure of the strength of the ultrasound signal; overall gain amplifies all signals by a constant factor regardless of the depth.
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27.
Region which is free from echoes (black).
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28.
Region in an ultrasound image in which the echoes are weaker (darker) than normal or in the surrounding regions.

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