Control Console/Ribs

Question 0

What is the joint called where the head of the rib articulates with the vertebral bodies?

Answer 0

Costovertebral joint

Question 1

Area between ribs

Answer 1

Intercostal space

Question 2

What is the joint called where the tubercles articulate with the T-spine transverse processes?

Answer 2

Costotransverse joints

Question 3

When the patient inhales, how do the ribs lay?

Answer 3

Horizontally

Question 4

When the patient exhales, how do the ribs lay?

Answer 4

Obliqued

Question 5

How many inches above the shoulders should the IR be?

Answer 5

1.5”

Question 6

How are lower ribs always done?

Answer 6

AP

Question 7

For lower ribs, where is the lower edge of the IR at?

Answer 7

Level of iliac crests

Question 8

For PA obliques, which side is away from the IR?

Answer 8

Affected anterior side

Question 9

For AP obliques, which side is closer to the IR?

Answer 9

Affected side

Question 10

What does high-voltage current determine?

Answer 10

Strength of x-rays

Question 11

What does low voltage current determine?

Answer 11

Number of x-rays

Question 12

What are the four things that make up the control console?

Answer 12

kVp
mA
exposure time
line compensation

Question 13

Adjusts the incoming alternating current voltage to a steady 220 V

Answer 13

Line voltage compensator

Question 14

What are 3 types of losses of power in transformers?

Answer 14

Copper
Eddy current
Hysteresis

Question 15

Function is the kVp selection

Answer 15

Autotransformer

Question 16

Primary side of high-voltage

Answer 16

Autotransformer

Question 17

Single coil of insulated wire wound around a large iron core. At intervals along the core called bare points, are major kVp and minor kVp

Answer 17

Construction of autotransformer

Question 18

Single coil serves as both primary and secondary coil; Operates on self induction

Answer 18

Autotransformer

Question 19

What controls the filament current; or the mA

Answer 19

Rheostat

Question 20

This is what is used in modern equipment for mA selectors

Answer 20

Saturable reactor

Question 21

Always located on the primary side; except for mAs timers

Answer 21

Exposure timers

Question 22

Separate from other main circuits; action is to “make” or “break” the high-voltage across the tube

Answer 22

Exposure timers

Question 23

Modern type of timer

Answer 23

Electronic timers

Question 24

Most sophisticated and the most accurate type of timer

Answer 24

Electronic timer

Question 25

Function is to measure the quantity of radiation reaching the film and automatically terminate the exposure when sufficient radiation to provide the required film density has reached the film

Answer 25

AEC (phototimers)

Question 26

With AEC, can you pick out a mAs?

Answer 26

No

Question 27

What are the two types of AEC’s?

Answer 27

Phototimers

Ionization timers

Question 28

AEC that is now used in modern equipment

Answer 28

Ionization timers

Question 29

Based on an ionization chamber which contains a volume of air between two metal electrodes; Located between the patient and the IR

Answer 29

Ionization timers

Question 30

These chambers have to be calibrated when they’re installed by service engineers to adjust correct densities

Answer 30

Ionization timers

Question 31

Why is the back up time for AECs important?

Answer 31

Ask as a safety factor

Question 32

What is the number one factor for quality images while using AEC?

Answer 32

Patient positioning

Question 33

When using AEC’s, and motion is a problem, what should you do?

Answer 33

Use high mA

Question 34

Used to check x-ray timers in single phase machines only

Answer 34

Spin top tests

Question 35

What is the formula for the single phase spin-top tests?

Answer 35

of dots = 120 x time

Question 36

How are three-phase machine timers checked?

Answer 36

By physicist

Question 37

What is the formula for the 3-phase spin-top tests?

Answer 37

360° x time = degree