Radiography Flashcards
What are the important setting’s
MA’s
Kv
WHAT DOES INCREASING THE KV DO
Increased exposure of the image receptor and reduces the difference between different structures
What does increasing the mas do
Increases plate exposure
How do x-rays interact with the patient
Different tissues in the body absorb different amounts of radiation
Thickness also affects how much is absorbed
What is the radio graphic process
Positioning Centring Collimation Exposure Labelling Artefacts
What does collimating do
Reduces the production of scattered radiation
How much do you need to include in a radiograph f a joint
Include 1/3 of the adjacent bones
How much do you need to include in a radiograph of a long bone
Whole of bone and adjacent joints
What could artefacts on a radiograph be due to
Technique
Incorrect exposure
Poor maintenance of equipment
What is the standard orientation of a lateral view radiograph
Cranial facing the viewers left
Dorsal aspect at the top
What. Does lateral view mean in radiography
Animal is lying on its side
What is the standard orientation to view a ventrodorsal/ dorsoventral view
Cranial aspect at top
Left side of animal on right side of image
What does ventrodorsal / dorsoventral view mean
Animal on its back or sternum
What is the standard orientation of a mediolateral / lateromedial radiograph of limb
Proximal aspect at top
Cranial aspect to left
What is the standard orientation of a craniocaudal/ caudocranial radiograph of limbs
Proximal aspect at top
No convention for whether lateral or medial should be left or right
When should you use radiography
Useful where bone or air/gas present
Advantage of radiography
Relatively easy as long as you pay attention to detail
Time and cost efffective
Radiographs can be interpreted immediately or be submitted for second opinion
Disadvantages of radiography
Less useful when both fluid and soft tissue structures are present
Patients need to be restrained
Good radiographic technique needed
Ionising radiation is harmful
Radiolucent
Few x-raps absorbed
Appear black on radiograph
Tissues wit a low density - e.g gas
Rdiopaque
Most x-rays absorbed
Very dense tissues - metal and bone
Appear white on radiograph
Soft tissue opacity
Soft tissues and fluid have the same radiographic opacity
Most organs and soft tissues
Grey on radiograph
What tissues is radiography useful to look at
Bone Soft tissue (low detail) Joints
