X-Ray Machine

Question 1

Tubehead

Answer 1

tightly sealed metal housing + insulating oil

Question 2

Tubehead: Aluminum Disk

Answer 2

filter out non-penetrating, longer wavelength x-rays

Question 3

Tubehead: Lead Collimator

Answer 3

restricts size of x-ray beam

Question 4

Tubehead: PID

Answer 4

[position indicating device] aims/shapes x-ray beam

Question 5

X-Ray Tube

Answer 5

lead glass vacuum tube inside tubehead

Question 6

X-Ray Tube: lead glass

Answer 6

prevents x-rays escape, has one window

Question 7

X-Ray Tube: Cathode

Answer 7

(-) negative electrode! Generates electrons!

with tungsten wire filament + molybdenum cup

Question 8

X-Ray Tube: Anode

Answer 8

(+) positive electrode! tungsten target + copper stem

Question 9

Electrons Travel

Answer 9

from Cathode to Anode

Question 10

Things that dissipate heat

Answer 10

insulating oil, copper stem

Question 11

Amperage

Answer 11

(mA) measures of # of electrons, QUANTITY

Question 12

Voltage

Answer 12

(kV) measures electrical force, QUALITY

Question 13

Filament Circuit

Answer 13

[low-voltage] controlled by (mA) settings

Question 14

High Voltage Circuit

Answer 14

controlled by (kV) settings

Question 15

Thermionic Emission

Answer 15

release of electrons

Question 16

% of energy converted to X-Rays

Answer 16

when electrons strike tungsten target - 1% x-ray, 99% heat

Question 17

Molybdenum Cup

Answer 17

Holds electrons

Question 18

Production of X-Rays

Answer 18

1. Electrons in cloud
2. Exposure button activated high voltage circuit
3. Molybdenum cup directs e- to tungsten target