RTE 1401 Essentials of Radiographic Physics & Imaging ch 5
Question 1.
Which of the following is designed to withstand tremendous heat and maintain a vacuum?
ANSWER
Glass (or metal) envelope.
Question 2.
By angling a rotating anode target we hope to achieve which of the following?
ANSWER
A sharper image and large area for heating.
Question 3.
The most common target angle for conventional x-ray tubes is
ANSWER
12 degrees
Question 4.
What part of the induction motor is outside the glass envelope?
ANSWER
Stator.
Question 5.
What is the radiographer responsible for?
ANSWER
sfe operation and proper maintenance
Question 6.
What is the housing consist of?
ANSWER
-lead lined structure -prevents against leakage -only part we can touch -oil bath -cooling only (no lubrication) -cooling fans -electrical insulation -large cables
-absorbs stray photons
Question 7.
What is the general purpose x-ray tube is an electronic _______ tube
ANSWER
vacuum
1/8
, Question 8.
What does the x-ray tube consist of?
ANSWER
-anode -cathode -induction motor -encased in a glass or metal enclosure
Question 9.
What is the main purpose of the enclosure?
ANSWER
to maintain a vacuum within the tube to prevent electrical arching
Question 10.
Glass tube variety
ANSWER
generally made of borosilicate glass because it is heat resistant used in: CT & Fluoro disadvantage: can still get arching & break glass -causes vaporized
tungston to group together
Question 11.
Metal envelope variety
ANSWER
provides a constant electric potential between the electron stream from the cathode and the enclosure, thereby avoiding the arching problem and extending
tube life used in: x-ray
Question 12.
Anode
ANSWER
positive end of the x-ray tube
Question 13.
What does the anode serve as?
ANSWER
an electrical and thermal conductor
Question 14.
What is the source of radiation?
ANSWER
the focal spot in the anode
2/8
Question 1.
Which of the following is designed to withstand tremendous heat and maintain a vacuum?
ANSWER
Glass (or metal) envelope.
Question 2.
By angling a rotating anode target we hope to achieve which of the following?
ANSWER
A sharper image and large area for heating.
Question 3.
The most common target angle for conventional x-ray tubes is
ANSWER
12 degrees
Question 4.
What part of the induction motor is outside the glass envelope?
ANSWER
Stator.
Question 5.
What is the radiographer responsible for?
ANSWER
sfe operation and proper maintenance
Question 6.
What is the housing consist of?
ANSWER
-lead lined structure -prevents against leakage -only part we can touch -oil bath -cooling only (no lubrication) -cooling fans -electrical insulation -large cables
-absorbs stray photons
Question 7.
What is the general purpose x-ray tube is an electronic _______ tube
ANSWER
vacuum
1/8
, Question 8.
What does the x-ray tube consist of?
ANSWER
-anode -cathode -induction motor -encased in a glass or metal enclosure
Question 9.
What is the main purpose of the enclosure?
ANSWER
to maintain a vacuum within the tube to prevent electrical arching
Question 10.
Glass tube variety
ANSWER
generally made of borosilicate glass because it is heat resistant used in: CT & Fluoro disadvantage: can still get arching & break glass -causes vaporized
tungston to group together
Question 11.
Metal envelope variety
ANSWER
provides a constant electric potential between the electron stream from the cathode and the enclosure, thereby avoiding the arching problem and extending
tube life used in: x-ray
Question 12.
Anode
ANSWER
positive end of the x-ray tube
Question 13.
What does the anode serve as?
ANSWER
an electrical and thermal conductor
Question 14.
What is the source of radiation?
ANSWER
the focal spot in the anode
2/8
