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Intro To RDT

Test #2

QuestionAnswer
The positive electrode of the x-ray tube is the __#1____ and the negative electrode is the ___#2_____ #1=anode #2=cathode
The two parts of the cathode are the Filament Focusing Cup
The term for the radiation that leaves the x-ray tube and is directed at the patients body is? Primary Radiation
Which one of these is not a property of x-rays? THEY ARE INVISIBLE THEY ARE ALL THE SAME ENERGY THEY ARE HIGHLY PENETRATING THEY ARE HETEROGENEOUS They are all the same energy
Which one of these statements is not true concerning the production of x-rays? Most electrons penetrate the anode
of these parts of the x-ray tube, which have tungsten in them? Filament Focusing Cup Anode
The ability of phosphors to light up when hit by x-rays is called? Fluorescence
X-rays damage biologic matter by the process of? Ionization
Photons that bounce off the patients body parts and fly out in a new direction are called? Scattered Radiation
Which part of the x-ray tube rotates? Anode
Radiographers are able to see x-rays when they? NONE OF ABOVE
Which one of these terms means the sie of the area from which the x-rays originate Focal Spot
A dual-focus x-ray tube has two? Filaments/Wire
The group of electrons sitting beyond the filament after thermionic emission is called? Space Change
The job of the focusing cup is too? Repel Electrons
The job of the filament is too? Release Electrons
The job of the anode is too? Stop Electrons
The glas envelope has lead in it too? Absorb leakage radiation
X-rays leave the tube at a spot called the? Window
If the small filament is heated, which size focal spot would be produced? Small
When the electrons lose energy at the anode, which of these energy types is produced in the greatest amount> Heat
When the x-rays travel toward the patients body, the beam takes this shape? A cone
X-rays travel at the speed of light, which is approximately 186,000 miles per second
Scattered radiation does what to radiographic contrast? It reduces it/ lowers the contrast
Which of these increases recorded detail? Small focal Spot
Created by: christinaw1022
 

 



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