EXAM
A "histogram" in virtual radiography refers to:
A. The frequency of recorded publicity values
B. The number brightness stages that can be assigned to a pixel
C. The length of the virtual matrix
D. The range of exposure values that can be detected by using the receptor - ANS-A. The
frequency of recorded exposure values
A circuit with a single course for electric contemporary glide is defined as a(n):
A. Parallel circuit
B. Closed circuit
C. Series circuit
D. Open circuit - ANS-C. Series circuit
A digital imaging system can frequently produce quality radiographs even if the patient dose is a
whole lot higher than desired. This is a result of what first-class of the radiographic gadget?
A. Large dynamic range
B. Large publicity range
C. Large bit depth
D. Large matrix size - ANS-A. Large dynamic variety
A greater quantity of wire windings on the number one facet of the transformer will produce:
A. Greater voltage
B. Less voltage - ANS-B. Less voltage
A larger anode angle will produce which of the following?
1. Decreased spatial decision
2. Greater heat dissipation
three. Larger powerful focal spot size.
A. 1 only
B. 2 only
C. 1 and 2
D. 1, 2, and three - ANS-D. 1, 2, and three
A new x-ray unit was set up at a neighborhood clinic. The engineering department had to know
the whole voltage so as to properly strength the unit. On one facet of the x-ray unit there was
,information pointing out that the unit's circuit had 250 A and a pair of,500 ohms. Using this
statistics, calculate the voltage.
A. 625,000 Volts
B. 2,750 Volts
C. 10 Volts - ANS-A. 625,000 Volts
A PACS network consists of the subsequent:
1. Archive server
2. Display workstations
three. Imaging modality
A. 1 and 2
B. 1 and three
C. 2 and 3
D. 1,2, and 3 - ANS-D. 1,2, and 3
A PACS community is used to connect which of the subsequent?
1. Radiologist analyzing stations
2. Imaging system
three. PACS servers
A. 1 and a pair of
B. 1 and 3
C. 2 and three
D. 1,2, and three - ANS-D. 1,2, and three
A PACS community is used to connect which of the following?
1. Radiologist analyzing stations
2. Imaging gadget
3. PACS servers
A. 1 and 2
B. 1 and 3
C. 2 and 3
D. 1,2, and three - ANS-D. 1,2, and three
A process used to become aware of the beneficial pixels values within the digital image is
referred to as:
A. Histogram analysis
B. Rescaling
C. Lookup Table changes
D. Digitization - ANS-A. Histogram analysis
A technologist has control over which of the subsequent?
1. Anode attitude
2. Filament size
Actual focal spot
, A. 1 only
B. 2 only
C. 2 and 3
D. All indexed - ANS-C. 2 and three
A transformer with a hundred twine windings on the number one aspect and 500 cord winding at
the secondary facet might have a ratio of
A. 500:one hundred
B. 2:1
C. 5:1 - ANS-C. 5:1
A Transformers can handiest feature thru the deliver of DC modern-day.
A. True
B. False - ANS-B. False
After the exposure is made, processing a tibia-fibula radiograph as an stomach may bring
about:
A. Incorrect brightness and comparison
B. Excessive dose to the patient
C. Loss of spatial decision
D. Reduced dynamic range - ANS-A. Incorrect brightness and evaluation
An eight-bit radiograph system is capable of showing what number of sun shades of grey?
A. 256 sun shades
B. Sixty four shades
C. 8 sunglasses
D. 1024 sunglasses - ANS-A. 256 sunglasses
An imaging gadget that converts x-rays immediately into an electrical signal will NOT
encompass which of those additives?
A. Thin-film transistor (TFT) array
B. Photodiode
C. Amorphous Selenium detector - ANS-B. Photodiode
An x-ray exposure ABOVE the level of the detector's dynamic range can also bring about an
image blunders referred to as:
A. Quantum mottle
B. Saturation artifact
C. Excessive evaluation
D. Geometric distortion - ANS-B. Saturation artifact
Bit intensity is described as:
A. The total quantity of brightness stages that may be produced through the virtual system