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Anatomy
Postitioning
CR/ Collimation
100
What is the weight bearing bone of the lower leg?
Tibia
100
The femoral condyles must be_______ When performing an AP leg?
Parallel with the IR
100
What is the CR for an AP leg?
Perpindicuar to the center of leg
200
What is located on the lateral side of the lower leg, slightly posterior and does not form any part of knee joint?
Fibula
200
What must be included on an AP leg film?
Entire tibia, fibula including knee and ankle joint
200
In a lateral leg projection the CR should be?
Perpindicular to midpoint of leg.
300
What is the second largest bone in the body?
Tibia
300
When performing a lateral leg projection, the patient should be rotated toward the affected or non affected side?
Affected side
300
When performing a cross table lateral leg, where should the IR be positioned, and where is the CR entering?
IR is between patients legs, centering the CR from the lateral side.
400
What is the sharp projection between articular facets in the tibia?
Intercondylar Eminence
400
How do you know when you have a true lateral leg image?
The femoral condyles are superimposed and perpindicular to IR.
400
What is the collimated field for a lateral leg?
Entire tibia and fibula including knee and ankle joints.
500
What projects lower than medial malleolous and 15-20 degrees more posterior than the medial mallelous?
Lateral Malleolus in Fibula
500
How should the ankle be positioned, during an AP leg projection?
Ankle should be flexed, to place foot verticle.
500
What is the collimated field for an AP leg?
IR must extend 1 to 1 1/2 inches beyond joints.