Lower extremity Projections Flashcards
For all toe projections the cassette size used?
10x12
For all toe projections the SID is?
40”
For all toe projections the Collimation is?
1” on all sides
For toes AP/PA Axial what is the IR?
center 3rd MTP joint
For toes AP/PA Axial what is the CR?
perpendicular to 3rd MTP joint CR angle 15 degrees posteriorly or elevate foot
For toes AP/PA Axial what is the criteria to be met?
entire toes to distal metatarsals
no rotation
open interphalangeal and metatarsophalangeal joints
For toes AP oblique Medial what is the IR?
center toes to IR
For toes AP oblique Medial what is the CR?
perpendicular entering 3rd MTP joints- pt is rotated 30-45 degrees
For toes AP oblique Medial what is the criteria to be met?
entire toes to distal metatarsal
open interphangeal and 2-5 metatarsophalangeal joints spaces
1st MTP not always open
For all foot projections the cassette size is?
10x12
For all foot projections the collimation is?
1” on all sides
For Foot AP/AP Axial what is the IR?
center to base of 3rd metatarsal
For Foot AP/AP Axial what is the CR?
10 degree toward heel entering base of 3rd metatarsal
For Foot AP/AP Axial what is the criteria to be met?
toes to tarsals
no rotation of foot
overlap of 2-5 metatarsal
open joint spaces
For Foot AP Oblique Medial what is the IR?
parallel to long axis center foot
For Foot AP Oblique Medial what is the CR?
perpendicular to base of 3rd metatarsal- patient at 30 degree angle
For Foot AP Oblique Medial what is the criteria to be met?
entire foot: toes to heel 3-5 metatarsal free of superimpostion navicular, lateral cuneiform and cuboid with less superimpostion tuberosity of 5th metatarsal sinus tarsi seen
For Foot Lateral what is the IR?
center to midfoot, 90 degree dorsifelxion
For Foot Lateral what is the CR?
perpendicular to base of 3rd metatarsal
For Foot Lateral what is the Criteria to be met?
entire foot
superimposed plantar surface of metatarsal head
fibula overlapping tibia
tibiotalar joint
For Calcaneus Axial what is the cassette size?
10x12
For Calcaneus Axial what is the IR?
center midline of ankle
For Calcaneus Axial what is the CR?
midpoint of IR with cephalic angle of 40 degrees
For Calcaneus Axial what is the criteria to be met?
calcaneus and calcaneocuboid joint
no rotation
For Calcaneus Lateral what is the cassette size?
10x12
For Calcaneus Lateral what is the IR?
long axis parallel to plantar surface
For Calcaneus Lateral what is the CR?
1” distal to medial malleolus
For Calcaneus Lateral what is the Criteria to be met?
entire calcaneus
tuberosity in profile
sinus tarsi open
calcaneocuboid and talonavicular joint open
For all Ankle projections what is the cassette size?
10x12
For all ankle projections what is the collimation?
1” on sides, 8” lengthwise
For ankle AP what is the IR?
center ankle, foot pointing up and flex
For ankle AP what is the CR?
perpendicular through ankle joint
For ankle AP what is the criteria to be met?
medial and lateral malleoli
talus-overalapping distal fibula
normal overlapping tibiofibular articulation
For Ankle Lateral what is the IR position?
parallel with long axis , center to ankle joint
For Ankle Lateral what is the CR position?
perpendicular to ankle joint
For Ankle Lateral what is the criteria to be met?
ankle centered
distal tibia, fibula, talus, calcaneus, and adjacent tarsals
5th metatarsal base and tuberosity seen
For Ankle Oblique (Mortise) what is the IR?
center ankle joint with 15-20 degree rotation
For Ankle Oblique (Mortise) what is the CR?
enter ankle joint