Production of X-rays- Lecture 3 & 4 Flashcards
Label the following image:
A) Control Panel
B) Control Panel
C) PID
D) Tubehead
E) X-ray Tube
F) Power Supply (Generator)
G) Extension Arm
The tube head of the x-ray machine is made up of:
- x-ray tube
- power supply (generator)
What component of the X-ray machine does this image show?
Control Panel
What can be viewed/ adjusted on the control panel:
- exposure time
- kVp selector
- mA selector
What type of exposure button do we have on our control panel?
Dead-man type
The ____ light and ____ signal must both be present on the control panel
indicator light; audible signal
Label the following components of the X-ray tube head:
a) x-ray tube
b) step-down transformer
c) step-up transformer
d) cathode (-)
e) anode (+)
f) filament circuit
g) tube head seal
h) aluminum discs
i) lead collimator
j) position indicating device (PID)
k) unleaded glass window of X-ray tube
l) insulating oil
m) metal housing of X-ray tube head
label the following image
a) tube head
b) PID
Label the following image:
a) x-ray tube
b) yoke
c) oil
d) power supply
e) collimator
f) aiming cylinder
g) x-ray beam
h) aluminum filter
i) power supply
List the important components of the X-ray tube head: (6)
- glass envelope
- insulating oil
- metal housing
- tube window
- aluminum filters
- lead collimator
Label the following image:
a) film & electron cloud
b) focal spot on tungsten target
c) glass envelope
d) vacuum
e) copper stem
f) anode (+)
g) useful x-ray beam
h) tube window
i) cathode (-)
j) electronic focusing cup
The cathode contains:
- filament
- focusing cup
The cathode filament is made of:
tungsten
What part of the cathode is made of tungsten?
the filament
Source of electrons in the X-ray tube:
cathode filament
Is heated with a low voltage source and emits electrons at a rate proportional to its temperature (thermionic emission)
cathode filament
The cathode filament is heated with a ___ voltage source and emits ___ at a rate proportional to ___.
low voltage source; electrons; its temperature
The cathode filament emits electron through:
thermionic emission
The cathode focusing cup is made of:
molybdenum
What is the charge of the cathode focusing cup?
negatively charged
Focuses the electrons into a narrow beam directed to the focal spot (+)
cathode focusing cup
The cathode focusing cup focuses the electrons into a ____ directed to the ____.
narrow beam; focal spot
What is the charge of the focal spot?
positive
The anode contains:
- Tungsten target
- Copper stem