Term
|
Definition
| responsible for producing x-rays and heat |
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Term
|
Definition
| accuracy with which a test reveals the patient's medical condition |
|
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Term
|
Definition
| how much clincally useful information the test provided |
|
|
Term
| what are the components of an x-ray/radiographic system? |
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Definition
1. x-ray tube & support system
2. collimator assembly
3. x-ray table
4. x-ray generator
5. control console
6. image receptor holder device |
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Term
| the image receptor may be a conventional film-screen cassette or more commonly a _______________ _____________ |
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Definition
|
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Term
| what is the x-ray tube made of? |
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Definition
|
|
Term
| what are the primary components of a x-ray tube? |
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Definition
|
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Term
|
Definition
| positive electrode of the x-ray tube |
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Term
|
Definition
| negative electrode of the x-ray tube |
|
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Term
| what supports the x-ray tube and allows you to position the x-ray tube over and around the patient? |
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Definition
|
|
Term
| what type of energy is supplied to the x-ray tube through the two large cables? |
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Definition
|
|
Term
| the x-ray tube converts electrical energy into |
|
Definition
|
|
Term
| how can you control the number and energy of the x-rays produced by the x-ray tube? |
|
Definition
| by adjusting the control console |
|
|
Term
| what is directly below the x-ray tube? |
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Definition
|
|
Term
| what is the x-ray beam limiting device in the x-ray/radiographic system? |
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Definition
|
|
Term
| what is responsible for the x-ray field size? |
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Definition
|
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Term
|
Definition
| increasing collimation=decreasing x-ray field size |
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|
Term
| where is a high intensity light bulb found? |
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Definition
|
|
Term
| when a light is projected on the patient what does this indicate? |
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Definition
|
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Term
|
Definition
| positive beam limitation: automatically collimates x-ray field size to minimize patient exposure |
|
|
Term
| why is it wrong to have an image receptor that is 10 x 12 and a collimation of 12 x 12? |
|
Definition
| you are over-exposing the patient |
|
|
Term
| what is the only reason to expose a patient to radiation? |
|
Definition
| to obtain a useable image |
|
|
Term
| what the most obvious part of a x-ray/radiographic system? |
|
Definition
|
|
Term
| what are the 3 characteristics of an x-ray table? |
|
Definition
1. tilt
a. tilting
b. nontilting
2. height
a. adjustable
b. nonadjustable
3. movement
a. stationary
b. free-floating |
|
|
Term
explain a:
a. 90-90 table
b. 90-30 table
c. 90-45 table |
|
Definition
a. 90-90 table: vertical to horizontal in either direction
b. 90-30: 90 in one direction and 30 in another
c. 90-45: 90 in one direction and 45 in another |
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Term
|
Definition
| easily transmits x-ray energy with very little absorption |
|
|
Term
TRUE or FALSE?
x-ray tables are NOT radioluscent |
|
Definition
|
|
Term
|
Definition
| located below the table top and holds the x-ray cassette (image receptor) stationary during x-ray exposure |
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|
Term
|
Definition
|
|
Term
| the Bucky mechanism tries to keep the image receptor centered on the __________ ___________ |
|
Definition
|
|
Term
| what is the workhorse of the total system? |
|
Definition
|
|
Term
| what are the 2 main components of the x-ray generator? |
|
Definition
| electrical cabinet and operator console |
|
|
Term
| the power of an x-ray system is expressed in |
|
Definition
|
|
Term
| the control console allow you to |
|
Definition
1. turn the x-ray system on and off
2. select x-ray exposure factors
3. start and stop exposure
4. provides audible and visual signal that x-ray exposure is occuring |
|
|
Term
| what are the 5 generic controls of the console? |
|
Definition
1. main power-on and off
2. kilovolt peak kVp
3. mA- milliamperage
4. timer
5. rotor-exposure switch |
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|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| quality; kilovoltage peak; penetrating abilities of an x-rays |
|
|
Term
| what is the range of kVp's in radiography? |
|
Definition
|
|
Term
|
Definition
| quantity of x-rays produced |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
| the device that begins the exposure is the |
|
Definition
|
|
Term
| the rotor exposure has two switches |
|
Definition
1. prep switch
2. exposure switch |
|
|
Term
| activation of the prep switch causes the |
|
Definition
| anode to rotate and prepares the x-ray tube |
|
|
Term
| how long does the prep phase take? |
|
Definition
|
|
Term
| the termination of the exposure must be indicated both |
|
Definition
|
|
Term
| the duration of x-ray exposures may be established _____________ or _______________ |
|
Definition
| manually or automatically |
|
|
Term
|
Definition
| automatic exposure control |
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