問題一覧
1
Photographic Qualities ______ - overall blackening of the film emulsion in response to photons ______ - difference between adjacent densities
- Density - Contrast
2
exposure factors under our control
Technique
3
thin layers of cardboard or polyester coated with layers of luminescent phosphor
Intensifying Screens
4
study of natural world through observation
Science
5
radiographic film that has an emulsion on both sides
Double Emulsion
6
structures that are less dense and permit the x-rays through
Radiolucent
7
specialized branch of medicine that uses image techniques to diagnose, manage, and treat disease in body
Radiology
8
measure of duration of exposure
Time (Seconds)
9
every piece of information on radiograph was put there by this
X-ray photons
10
3 Technical Exposure Factors MKS
1. milliampere (mA) & milliampere seconds (mAs) 2. kilovoltage peak (kVp) 3. Source to Image Distance (SID)
11
process that makes pictures of areas in body
Imaging
12
3 Types of Processing
- Manual Processing - Automatic Processing - Digital Processing
13
measure of electrical pressure (potential) forcing the current through the tube
kilovoltage peak (kVp)
14
radiation prod. from x-ray photon interactions with matter in such a way that the resulting photons go in diff directions
Scatter Radiation
15
expression of human creative skill and imagination
Art
16
measure of electrical current
milliampere
17
type of processing where after shot, film will automatically be transferred to a computer for editing
Digital Processing
18
processing where film is carried through chemical solution by a series of rollers
Automatic Processing
19
structures that are dense and don’t allow x-rays through them. Appear white on radiograph
Radiopaque
20
IMAGE PRODUCTION 4 REQUIREMENTS VSMM
1. Vacuum (Tube Housing) 2. Source of Electron (Filament) 3. Method to accelerate electrons (Voltage) 4. Method to stop electron (Target)
21
exposed directly by x-rays photons
Film Emulsion
22
art & science of using radiation
Radiography
23
7 Variables that can affect density PTMKBFP
Patient Size Tissue Composition mAs kVp Beam modification Film screen combination Processing
24
4 Factors that can be controlled by radiographer FPQS
>Focal Spot Size >Primary Beam Configuration >Quantity & Quality of Scatter radiation >Speed of image receptor
25
2 Types of Photons that Pass through Matter
Radiolucent Radiopaque
26
parameter that controls the amount/quantity of radiation produced by x-ray tube
milliampere seconds
27
Imaging Chain - _____: invisible image, no details yet - _____: correct term to describe an image produced by photons on an x-ray film
Latent Image Radiograph
28
Source to Image Distance is also known as ______ distance (FFD) or ______ distance (TFD)
>Focal Film Distance >Target To Film Distance
29
processing where the film must be developed, fixed, washed and dried
Manual Processing
30
x-ray beam after it leaves x-ray tube & before it reaches the object
Primary Radiation
31
standardized distance between point of x-ray emission in x-ray tube and image receptor
Source to Image Distance
32
FOD MEANING
Film to object distance
33
beam of radiation is reduced in energy when passing through tissue
Attenuation
34
radiation resulting after x-ray beam exits the object
Remnant Radiation