Reveiw, LRA 220: Week 3: Review, LRA
219: Week 3: Review: Part 2: Labeling, LRA
219: Week 3: Review
AP Projection (no rotation)
Which projection &/or position is represented by this drawing of the foot?
B
Which of the labeled structures is the lateral condyle of the femur?
Mediolateral projection of the knee but under rotated towards the IR
This radiograph represents which of the following positions?
A
Which of the following labeled structures is the medial condyle of the femur?
Where should the central ray be directed for a lateral calcaneus radiograph?
one inch distal to medial malleolus
Which projection is preferable for examining the fibular head of a fractured lower
limb?
medial oblique knee
What CR angulation is required for the AP oblique projection of the foot?
CR is perpendicular to the image receptor.
A radiographic appearance of a well-circumscribed lucency within bones
describes:
a bone cyst
The best method of evaluating injuries to the menisci and ligaments of the knee
joint involves:
a magnetic resonance imaging procedure.
To decrease the angle between the anterior surface of the foot and anterior
surface of the lower leg is described as:
Dorsiflexion
How much central ray (CR) angulation (if any) should be used for an AP
projection of the toes?
10° to 15° toward calcaneus
What routine series should be performed for a study of the second toe?
AP, AP oblique with medial rotation, lateromedial projection
A lateral knee radiograph that is overrotated toward the image receptor can be
recognized by which of the following?
The fibular head will appear less superimposed by the tibia than a true lateral.
A correctly positioned AP medial oblique foot projection frequently may also
demonstrate a fracture of the base of the fifth metatarsal if present. True or False
True
To properly visualize the joint spaces with the AP projection of the foot, the CR
must be:
, perpendicular to the metatarsals
Which joint space should be open or almost open for a well-positioned AP
oblique knee projection with medial rotation?
proximal tibiofibular
Which position of the foot will best demonstrate the lateral (third) cuneiform?
AP oblique with medial rotation
What is one advantage of the lateromedial projection of the foot?
The foot assumes a more true lateral position.
How much CR angulation to the long axis of the foot is required for the
plantodorsal (axial) projection of the calcaneus?
40°
Where is the CR placed for a mediolateral projection of the calcaneus?
1 inch (2.5 cm) inferior to medial malleolus
Which joint surfaces of the ankle joint are open with an AP projection of the
ankle?
Medial and superior
How much rotation from an AP position of the ankle will typically produce an AP
mortise projection?
15° to 20°
The purpose of the AP stress views of the ankle is to demonstrate:
possible joint separations or ligament tear.
To ensure that both joints are included on an AP projection of the tibia and fibula
on an adult, the technologist should:
turn the image receptor diagonally.
Which projection of the knee will best demonstrate the neck of the fibula without
superimposition?
AP oblique with medial rotation
What is the major disadvantage of using 45° of flexion for the mediolateral
projection of the knee?
Draws the patella into the intercondylar sulcus
The AP mortise projection of the ankle is commonly taken in surgery during open
reductions. True or False
True
Gonadal shielding of the male patient for the AP pelvis projection requires that
the top of the shield is not extend above the level of the:
inferior margin of the symphysis pubis
A radiograph of an AP pelvis demonstrates that the right obturator foramen is
foreshortened but the left foramen is open. What positioning error is present on
this radiograph?
right rotation
Gonadal shielding should be used on both males and females of childbearing age
for AP hip projections, if correctly placed. True or False
True
What is the amount of abduction of the femurs recommended for an AP bilateral
frog-leg projection?
40° to 45°