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Digital Imaging 2 Test

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1.
The photomultiplier tube of a PSP plate reader converts the light into an __________ __________ which is then ___________ by the _________.
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2.
An EI represents an approximation of the dose received by the _____________.
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3.
Scanning the bar code is extremely important to ensure that the __________ is linked to the correct __________ and tells the computer software what type of __________ ________ to use for an image of a particular __________ structure.
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4.
Canon uses an exposure indicator known as _______ and the value is ________ __________ to the exposure value.
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5.
The unique code on a PSP plate associates what with what?
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6.
When a PSP plate is ready for image extraction a _______ ______ strikes the plate and interacts with the _________ in the __________ ________ releasing the _________ trapped there in the form of _________. This energy trapped is the _______ ______.
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7.
What does Agfa use for their exposure indicators?
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8.
Which device allows for increased scanning precision compared to a mechanical arm?
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9.
A Type 3 Histogram is unique because it takes into account a significant ___________ object such as a ___________ hip or stomach full of __________.
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10.
Optimal EI ranges for PSP systems are best set by the _____________ who can evaluate the level of acceptable __________ which is very similar to the way images are evaluated in a __________ environment.
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11.
When using a Flat Panel Receptor, the technologist doesn't touch what?
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12.
A Neural Histogram compares the exposure from the receptor with what?
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13.
When ________ strikes the CCD, __________ are released by the CCD _________ in proportion to the ___________ striking it.
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14.
A Histogram consists of a range of data values from low to high __________, depending on the ____________ and ____________ factors.
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15.
The Detector Element (DEL) in a Flat Panel Detector collects ________ that are extracted from the ___________ ________ and are converted into a ____________ _______ by an _______. This is the process that creates the image that is displayed on the monitor
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16.
CCD's and CMOS both need a __________ to convert __________ photons into __________.
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17.
The Siemens Flat Panel Detector uses an Exposure indicator value of _______.
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18.
What is used to calculate an EI value?
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19.
In a PSP plate reader, the _________ _________ collects the light and directs it into a device called a _____________ _______.
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20.
As the energy in the phosphor layer of a PSP plate is released as light, a ________ _________ collects the _______ photons and sends them to the ___________ ______ which and then the _______ where the electronic signal is converted to a _________ _______.
A.
Light; Electrons; Silicon; Light
B.
Electrons; Detector Assembly; Digital Value; ADC
C.
Light guide; Light; Photomultiplier tube; ADC; Digital Signal
D.
Plate Reader or image detector (what the hell is an "image detector"?)
E.
Scintillator; X-ray photons into light
F.
Radiologist; Noise; Analog
G.
Electronic Signal; Digitized; ADC
H.
Image; Patient; Processing codes; anatomical
I.
An individual patient and a specific exam
J.
Two or more predefined histogram data values
K.
Light Guide; Photomultiplier Tube
L.
A histogram analysis of the distribution of radiation intensities.
M.
Exposures; Technique and Subject Factors
N.
lgM = logarithm of the Histogram Median
O.
laser beam; Phosphors; Phosphor layer; Energy; Light; Latent Image
P.
EXI
Q.
REX; Directly proportional
R.
Receptor
S.
Attenuating; Prosthetic; Barium
T.
A rotating polygonal mirror and point scanner
Type the Answer that corresponds to the displayed Question.
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21.
As the computer analyzes the image data that the ADC extracts from the PSP plate, a key step for the PSP receptor is recognizing _____________ ________ _________.
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22.
With the Type 3 histogram, the attenuating object adds an additional ____________ to an otherwise normally distributed histogram.
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23.
Philips uses ______ for their exposure indicator which stands for ___________ __________.
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24.
A PSP plate reader scans the ___________plate and ________ the exposed and unexposed areas?
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25.
________ size controls the recorded detail or spatial resolution for Flat Panel Detectors and cannot be changed by the Technologist.
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26.
Each DEL in a Flat Panel Detector is a _________.
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27.
Histograms graphically represent a collection of ___________ values extracted from the __________.
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28.
Fuji, Konica and Philips all use values for their EI's that are __________ ___________ to the exposure received.
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29.
Rescaling the image pixel values to display properly doesn't prevent overexposure of the ___________.
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30.
Due to Automatic rescaling, the technologist has no visual cue of __________________.

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