Chapter 6 And 7 Flashcards
Types of tables
Fixed
Floating
Tilt
Tables must be
Radiolucent so they attenuate little exit radiation
Tables must be
Flat and hard because it’s very for positioning
What are tables made from
Bakelite or carbon fiber they are also no scratch
What is AEC
Automatic Exposure Control
Where is the AEC
Under table or buckey
What are some accessories for a table
Foot board
Handles
Shoulder supports
What are some specialized equipment
Mammo
Tomography
CT
Uro units
What is a simulator
How to plot and treat cancer
What is therapy
Treatment for a disease
What does the main breaker do 1
Power control to X-ray
What does the exposure switch do 2
Starts exposure
What does the auto transformer do 3
Kvp selection
What does the timer circuit do 4
Exposure length
What does the step up transformer do 5
Increased voltage decrease amps
What does the four diode rectification unit do 6
Coverts AC to DC
What does the filament circuit variable resistance do 7
Slows current flow
What does the step down transformer do 8
Decrease voltage increase amps
What does the X-ray tube do 9
Produces X-rays
What does the rotor stator do 10
Spins anode
What are the two common types of exposure switches
Milliamperage timer (manual setting mAs)
AEC timer
What is the incoming line voltage
210-220 volts
What are some things about single phase
Old
Not used
2 pulses per cycle
Voltage ripple is 100%
60 cycles in one second
120 peaks per second
What are some things 3 phase 6 pulse and 12 pulse
Uses 3 different voltage wavelengths
Created by special generator winding
3 phase results in the potential difference dropping less than 100%
6 pulse = 60 cycles = 360 pulses per sec = 14% ripple
12 pulse = 60 cycles = 720 pulses per sec = 4% ripple
