Large Animal Radiography Flashcards
What is the inverse square law for radiography
Strength of X-ray beam is inversely proportional to square of distance from source.
Standing double the distance from source of radiation will quarter the dose
Why is it important to get radiographs correct first time
Need to avoid repeat exposure
Check list for radiography (8)
Machine settings correct? (use exposure charts and record exposures)
Patient correctly positioned? (fully weight-bearing, limb in alignment)
Correct labelling? (patient, date, left/right, medial/lateral)
Correct focal distance? (measure, don’t guess!)
Correct centring of beam? (know anatomy and technique)
Correct collimation of image? (everything you want and nothing more)
Plate held and positioned correctly?
Final safety check – is everyone still where they should be…
How are large animal radiographs always orientated (2)
Cranial aspect (animal’s head) on left of image
Proximal aspect on upper part of image
Different aspects of equine limb
Dorsal (front), lateral (outside), medial (inside) palmar (back)
4 standard views in most areas
- Lateromedial (LM)
- DP/CrCa
- Dorsolateral palmaro/plantaromedial oblique
- Dorsomedial palmaro/plantarolateral oblique
Where is a view described as Dorso-palmar and where is it craniocaudal (equine limb)
Carpus/tarsus and below: Dorsopalmar/plantar
Above carpus and tarsus: Craniocaudal
Difference between plantar and palmar
Palmar= forelimb (palm of hand)
plantar= hindlimb
Which parts are highlighted on a dorsopalmar view
Medial and lateral
Which parts are highlighted on lateromedial view
dorsal and palmar
What parts are highlighted on Dorsolateral palmaro/plantaromedial oblique
Dorsomedial and palamro/plantarlateral aspects
What parts are highlighted in Dorsomedial palmaro/plantarolateral oblique
Dorsolateral and palmaro/planaromedial
