Ch5 p9

A radiograph of an anterior oblique (Grashey method) shows that the anterior and posterior glenoid rims are not superimposed. The following positioning factors were used: erect position, body rotated 25 - 30 degrees toward the affected side, central ray perpendicular to scapuhumeral joint space, and affected arm slightly abducted in neutral rotation. Which of the following modifications will superimpose the glenoid rims during the repeat exposure?

• Angle central ray 10 - 15 degrees caudad

• Rotate body less toward affected side

• Place affected arm in external rotation position

• Rotate body more toward affected side

A patient with a possible shoulder dislocation enters the emergency room. A neutral AP projection of the shoulder had been taken, confirming a dislocation. Which additional projection should be taken?

• Inferosuperior axial (Celements modification)

• Alexander method

• AP apical oblique axial (Garth method)

• AP, external rotation

A radiograph of an AP axial clavicle taken on an asthenic patient shows that the clavicle is projected in the lung field below the top of the shoulder. The following positioning factors were used: erect positioning, central ray angled 15 degrees cephalad, 40 inch SID, and respiration suspended at end of expiration. Which of the following modifications should be made during the repeat exposure?

• Increase central ray angulation

• Suspend respiration at end of insperation

• Reverse central ray angulation

• Use 72 inch SID

A patient with a possible right-shoulder separation enters the emergency room. Which of the following routines should be performed?

• AC joint series: non-weight bearing and weight bearing projections

• AP neutral projection and AP apical oblique axial (Garth method)

• AP neutral and transthoracic lateral projections

• AP internal and external projections

A patient comes to the radiology department with a history of tendonitis of the bicep tendon. Which of the following projections will best demonstrate calcification of the tendon within the intertubercular sulcus?

• AP apical oblique axial (Garth method)

• AP oblique (Grashey method)

• PA axial transaxillary projection (Bernageau method)

• Tangential projection (Fisk modification)

An AP apical oblique axial (Garth method) radiographic image demonstrates poor visibility of the shoulder joint. The technologists used the following factors: patient erect, facing the x-ray tube, 45 degrees of rotation of affected shoulder toward the IR, 45 degrees cephalad angle, and the CR centered to the scapulohumeral joint. Which of the following factors would have contributed to this substandard Garth position?

• Wrong direction of CR angle

• Incorrect CR centering

• Position must be performed recumbent

• Shoulder rotated in wrong direction

A patient is referred to radiology for an AC joint series. The routine calls for an AP axial projection (Zanca method) to be included. How is this projection performed?

• Ask another technologist to hold the patient erect for the projection

• Perform the position AP erect with 10 - 15 degrees cephalic angle

• Perform an AP recumbent with 35 - 45 degrees angled toward the image receptor

• AP erect projections with and without weights

A patient enters the ER with a proximal and midhumeral fracture. The patient is in extreme pain. Which of the following positioning routines routines would demonstrate the entire humerus without excessive movement of the limb?

• AP and mediolateral humerus

• AP and transthoracic lateral

• AP and transthoracic lateral of humerus

• AP and scapular Y lateral