Questions 16 to 23 pertain to tho infensperior axial projection (Lawrence method).

TRUE

True or false. When the patient is recumbent, the head and upper torso should be elevated 3 inches (7.6 cm).

TRUE

True or false. When using a horizontally directed central ray, the patient should be placed in the supine body position.

As close as possible to a right angle

With reference to the long axis of the body, how should the affected arm be positioned?

External

into which rotational position should the humerus be placed?

Axilla of the affected arm

Which area of the body should the central ray enter?

The degree of abduction Of the affected arm

What positioning factor determines how many degrees the central ray should be directed medially?

b, c, d, g

Examine Fig. 6.12, an image of the inferosuperior axial projection (Lawrence method). From the following list, circle four radiographic evaluation criteria indicating that the patient was properly positioned for the inferosuperior axial projection (Lawrence method).

a. The scapula should be seen in lateral profile.

b. The coracoid process should be seen pointing anteriorly.

c. The lesser tubercle should be seen in profile and pointing anteriorly.

d. The scapulohumeral joint should be seen slighily overlapping.

e. The scapula, clavicle, and humerus should be seen through the lung field.

f. The greater tubercle should be seen in profile on the lateral aspect of the humerus.
g. The AC joint, acromion, and acromial end of the clavicle should be seen through the humeral head.