IMAGING SYSTEM

Question 1

he discovered the x-rays

Answer 1

wilhelm conrad roentgen

Question 2

discovery of x rays

Answer 2

november 8 1895

Question 3

where did he discovered the xrays

Answer 3

wurzburg university in germany

Question 4

original fluorescent material

Answer 4

barium platinocyanide

Question 5

recent fluorescent material

Answer 5

zinc cadmium sulfide &calcium tungstate

Question 6

Clarence Dally (1904)

Answer 6

experienced a severe xray burn that eventually required amputation of both arms, died in 1904 and is counted as the first x-ray fatality in the United States

Question 7

william rollins

Answer 7

demonstrated the first application of collimation and filtration

Question 8

H.C Snook (1907)

Answer 8

introduced the interrupterless transformer,
“snook transformer”

Question 9

Williiam D. Coolidge

Answer 9

introduced the coolidge xray tube

Question 10

why did xray emerged as a medical specialty?

Answer 10

because of snook transformer and the coolidge x-ray tube

Question 11

Gustav Bucky (German) (1913)

Answer 11

he invented the stationary grid (“glitterblende”)

Question 12

H. Potter (American) (1915)

Answer 12

probably unaware of Bucky’s patent because of wwii, invented a moving grid

Question 13

when did the potter-bucky grid introduced?

Answer 13

1921

Question 13

radiography

Answer 13

it Uses film or a solid-state image receptor and provide fixed images

Question 14

FLUOROSCOPY

Answer 14

Conducted with an x-ray tube located under the examination table.
Provided with moving images on a television monitor or flat panel display.

Question 15

COMPUTED TOMOGRAPHY

Answer 15

Uses a rotating x-ray source and detector array

Question 16

wife of reoentgen

Answer 16

Anna Bertha Ludwig

Question 17

Thomas A. Edison (1898)

Answer 17

discovered the fluoroscope

Question 18

Michael Pupin (1898)

Answer 18

demonstrated the use of intensifying screen

Question 19

Charles L. Leonard (1904)

Answer 19

demonstrated the use of double emulsion film

Question 20

what is the function of x-ray imaging system?

Answer 20

The function of the x-ray imaging system is to provide a controlled flow of electrons intense enough to produce an x-ray beam appropriate for imaging.

Question 21

May be flat or curved but must be uniform in thickness and as transparent to x-rays as possible.

Answer 21

EXAMINATION TABLE

Question 22

radiolucent

Answer 22

a property of material that allows x-rays to pass through

Question 23

radio paque

Answer 23

a property of material that absorbs xray

Question 24

3 main components of xray imaging system

Answer 24

1. xray tube 2. operating console 3. high voltage generator

Question 25

The fluoroscopic x-ray tube is usually located

Answer 25

under the examination table

Question 26

the radiographic x-ray tube is attached to

Answer 26

an overhead movable crane assembly that permits easy positioning of the tube and aiming of the x-ray beam.

Question 27

these couches are strong and absorb little x-radiation. This contributes to reduced patient radiation dose

Answer 27

carbon fiber

Question 28

must have a window for viewing the patient during the examination

Answer 28

protective barrier

Question 29

may be housed in an equipment cabinet positioned against a wall

Answer 29

high voltage generator

Question 30

 Radiation quantity

Answer 30

mAs, refers to the number of x-rays or the intensity of the x-ray beam.

Question 31

 Radiation quality

Answer 31

kVp, refers to the penetrability of the x-ray beam

Question 32

 Most x-ray imaging systems are designed to operate on

Answer 32

220 V power

Question 33

line compensator

Answer 33

measures the voltage provided to the x-ray imaging system and adjusts that voltage to precisely 220 V.

Question 34

 The power supplied to the x-ray imaging system is delivered first to the

Answer 34

autotransformer.

Question 35

Has a single winding

Answer 35

auto transformer

Question 36

the exposure begins at maximum mA, and the mA drops as the anode heats.

Answer 36

falling load generator

Question 37

 X-ray tube current is monitored with an mA meter that is placed

Answer 37

in the tube circuit

Question 38

Filament Transformer

Answer 38

filament heating isolation step-down transformer.

Question 39

4 types of exposure control

Answer 39

1. synchronous timers 2. electronic timers 3. mAs timers 4. automatic exposure control

Question 40

solid state radiation detectors is also called

Answer 40

semiconductor radiation detector