CA x-ray review

Kilavoltage

Controls the speed of the electrons flowing from cathode to anode

Milliampere

the number of electrons flowing from filament to target each second

Quality

kVp

Quantity

mA

Cathode

expels the electrons from the circuit

SID for OMAP

40

SID for Lateral Cervical

72

Where is the CR pointed at during a AP LC

Thyroid cartilage

What is the tilt for a AP LC

15’ cephalically

SID for lateral cervical

72’

Where is the CR pointed at for a lateral cervical

midpoint of scm muscle. Top of CR alligled with top of ear

Cervical oblique SID

72’

PA oblique view tilt

15’ caudally

AP oblique view tilt

15’ cephalically

AP thoracic SID

40’

CR for a AP thoracic

2 inches above the shoulders. Aprox at T6

Lateral Chest pt instructions are

Deep breath and hold it

Lateral thoracic instructions for pt

arms in front of pt

Lateral Thoracic CR

2 inches above the SH. Approx at T6

AP Lumbar CR

1 inch BELOW illiac crest

Lateral lumbar pt instructionslljdljd;j

Arms crossed over chest

Anode

converts the energy of electrons into x-rays

CR for a lateral lumbar

1 inch above illiac crest

AP sacrum view

15’ cephalically

Lateral pelvis view

2 inches above the greater trocanter

CR from SH views

Coracoid process

OID decreased

Increased detail (Magnification)

SID increased

Increased detail

Cervical Oblique views what

IVF

Lumbar oblique views what

PARS (Scotty dog)

LCAO

Left IVF

LCPO

Right IVF

RLAO

Left PARS

Left LAO

right PARS

What is the process called when a heated element is emitting electrons

Thermionic emission

WHat part of the x-ray tube expels the ecetrons for the circuit

the cathode

Decereasing the KVp by 15% will increase the mas by how much

50%

AP lumbar view is taken at

experation

Line vltage compensator

adjusted to compansate for neighboorgood variations in voltage

The intensity of radiation is

Inversely porportional to the square of the distance

Annulus Fibrosus

The toughest outermost portionn of the IVF disc (Made of cartilage)

Attenuated

Radiation that doesnt contribute to the film

Remnant

catter radiation affects QUALITY

Scatter radiation affects QUALITY by decreasing the

contrast

A PT should be told to do what during a lumbar view

deep breath in and let it out

Increasing KVP

increases the penetration of the x-ray beam

Most imporatant inteartion in tube

Compton interation

Cervical flexion

Tuck chin and drop head down

Fillament

controls lighting

Milliamperage

Quality of electrons

Cathode for heal effect towards

Thickest part of body

Prenumbra

Sharpness of the bone on image

Grid ratio

Ratio of height to the spaces between the lead strips

If you want to to double the density of the image you must:

Double the mAs

The voltage in a x-ray runs from:

Cathode to Anode

What will assit in reducing radiation

Shortest exposure time and High kVp+ low mas technique

If you increase the kVp

It will increase scatter radiation, causing the image to look more gray

Are the waves shorter of longer when increasing kVp

Shorter

If the small focal spot is selected the penumbra will

decrease

Scatter radiation will have what errect on image quality

longer scale of contast and will increase image detail

whta takes account the biological effect

quality factor

When x-rays interact with matter and the radiation is decreased this is called

absorption radiation