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86 Cards in this Set
- Front
- Back
The three aspects of the clavicle are the
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sternal extremity, body (shaft),and acromial extremity
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The three angles of the scapula include the
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lateral angle, superior angle, and inferior angle
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The anterior surface of the scapula is referred to as the
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costal surface
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What are the names of the two fossae located on the posterior scapula?
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Infraspinous fossa
Supraspinous fossa |
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All of the joints of the shoulder girdle are classified as being
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synovial (diarthrodial)
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Joint movement type:
Scapulohumeral |
spheroidal
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Joint movement type:
Sternoclavicular |
Plane
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Joint movement type:
Acromioclavicular |
Plane
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What rotation demonstrates the greater tubercle profiled laterally?
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External rotation
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What rotation demonstrates the humeral epicondyles angled 45 degrees to image receptor?
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Neutral rotation
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What rotation demonstrates the epidondyles perpendicular to IR
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internal rotation
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What rotation demonstrates the supination of the hand
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external rotation
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What rotation demonstrates the palm of the hand against thigh
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neutral rotation
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What rotation demonstrates the epicondyles parallel to IR
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external rotation
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What rotation demonstrates the lesser tubercle profiled medially
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internal rotation
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What rotation demonstrates the proximal humerus in a lateral position
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internal rotation
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What rotation demonstrates the proximal humerus in position for an AP projection?
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external rotation
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How much (at what angle) should the affected arm be abducted from the body for the Inferosuperior Axiolateral projection?
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90 degrees
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The kV range for adult should projections is
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between 70 +/- 5 kV
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____ focal spot setting should be selected for most adult shoulder studies.
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Small Focal Spot
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T/F: Low mA with short exposure times should be used for adult shoulder studies.
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False.
High mA |
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T/F: The use of contact shields over the breast, lung, and thyroid regions is recommended for most shoulder projections.
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True
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T/F: CT arthrography of the shoulder joint requires the use of iodinated contrast media injected into the joint space.
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True
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T/F: MRI is an excellent modality for demonstrating nondisplaced fractures of the shoulder girdle.
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FALSE
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T/F: Nuclear medicine bone scans can demonstrate signs of osteomyelitis and cellulitis.
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True
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Compression between the greater tuberosity and soft tissues on the coracoacromial ligamentous and osseous arch
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Impingement syndrome
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Injury of the anteroinferior glenoid labrum
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Bankart lesion
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Inflammatory condition of the tendon
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Tendonitis
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Superior displacement of the distal clavicle
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Acromioclavicular joint
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Compression fracture of the articular surface of the humeral head
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Hill-Sachs defect
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Traumatic injury to one or more of the supportive muscles of the shoulder girdle
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Rotator Cuff Tear
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Atrophy of skeletal tissue
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Osteoporosis
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Subacromial spurs
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Impingement syndrome
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Fluid-filled joint space
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Bursitis
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Thin bony cortex
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Osteoporosis
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Abnormal widening of acromioclavicular joint space
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Acromioclavicular joint separation
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Calcified tendons
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Rheumatoid arthritis
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Avulsion fracture of the glenoid rim
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Bankart lesion
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Narrowing of joint space
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Osteoarthritis
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Closed joint space
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Rheumatoid arthritis
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Compression fx of humeral head
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Hill-Sachs defect
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Which two basic shoulder projections are routinely taken for a shoulder (with no traumatic injury) and proximal humerus?
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AP external
AP internal |
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Specifically, where is the central ray placed for an AP projection of the shoulder?
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Perpendicular to IR, to midscapulohumeral joint; 3/4" inferior and lateral to coracoid process
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Which lateral projection can be performed to demonstrate the entire humerus for a patient with a midhumeral fx?
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Transthoracic lateral
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To best demonstrate a possible Hill-Sachs defect, which additional positioning technique can be added to the infero-superior axial projection?
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Rotated affected arm externally approximately 45 degrees
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What type of central ray angulation is required for the inferosuperior axial projection for the shoulder?
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25 - 30 degrees medially
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The ___ projection of the shoulder produces an image of the glenoid process in profile. This projection is also referred to as the ___ method.
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AP oblique
Grashey method |
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Which projection produces a tangential projection of the intertubercular groove?
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Tangential projection
(Fisk modification) |
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The supine version of the tangential projection for the intertubercular groove requires that the central ray be angled ___ from the horizontal plane.
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10 - 15 degrees posteriorly
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What projection would demonstrate a possible dislocation of the proximal humerus?
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Scapular Y
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The ___ projection is the special projection of the shoulder that best demonstrates the acromiohumeral space for possible subacromial spurs, which create shoulder impingement symptoms.
This projection is also referred to as the ___ method. |
Supraspinous outlet tangential projection
Neer method |
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What projection can be performed erect to provide a lateral view of the proximal humerus in relationship to the glenohumeral joint?
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Superoinferior axial projection
(Hobbs modification) |
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How much is the CR angled for the inferosuperior axial projection (Clements modification) if the patient cannot fully abduct the arm 90 degrees?
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5 - 15 degrees toward axilla
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What CR angle is required for the AP axial projection (Alexander method) for AC joints?
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15 degrees cephalad
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T/F: The superoinferior axial projection (Hobbs modification) requires no CR angle.
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True
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T/F: The transthoracic lateral projection can be performed for possible fractures or dislocations of the proximal humerus.
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True
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T/F: The affected arm must be placed into external rotation for the transthoracic lateral projection.
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FALSE
Neutral rotation |
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A CR angle of ____ may be used for the transthoracic lateral projections if the patient is unable to elevate the injured arm and shoulder sufficiently.
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10-15 degrees cephalad
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T/F: The scapular Y lateral (anterior oblique) position requires the body to be rotated 45-60 degrees anteriorly toward the affected side.
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True
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What shoulder projection delivers the greatest skin dose to the patient?
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Transthoracic lateral
Skin dose - 1005 |
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What shoulder projection requires the smallest thyroid dose?
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Scapular Y lateral
Skin dose - 1 |
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Which special projection of the shoulder requires that the affected side be rotated 45 degrees toward the cassette and uses a 45 degree caudad central ray angle?
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Garth method
(AP apical oblique axial projection) |
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A posterior dislocation of the humerus projects the humeral head (superior/inferior) to the glenoid cavity with the Garth method.
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Superior
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A thin-shouldered patient requires ___ CR angle for an AP axial clavicle projection than a large-shouldered patient.
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10 - 15 degrees MORE
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Inferosuperior axial
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Lawrence method
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AP oblique for glenoid cavity
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Grashey method
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Tangential for intertubercular (bicipital) groove
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Fisk modification
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Supraspinatus outlet tangential
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Neer method
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Transthoracic lateral
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Lawrence method
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AP apical oblique axial
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Garth method
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What medial CR angle is required for the inferosuperior axial shoulder (Lawrence method) projection?
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25-30 degrees
inferosuperior axial shoulder (Lawrence method) is laying down - CR into axilla |
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For a Grashey method projection of the shoulder, the CR is centered
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to the scapulohumeral joint.
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T/F: AP scapula is performed using a breathing technique.
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True
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Which projection of the shoulder requires that the patient be rotated 45-60 degrees toward the IR from a PA position?
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Lateral scapula position
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How much CR angulation is recommended for an asthenic patient for an AP axial projection of the clavicle?
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30 degrees
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Where is the CR centered for an AC joint projection on a single 14x17" image receptor?
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1 inch above the jugular notch
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A radiograph of an anterior oblique scapular Y position reveals that the scapula is slightly rotated (vertebral and axillary borders are not superimposed). The axillary border of the scapula is determined to be more lateral compared with the vertebral border. What modification should be made for the repeat exposure?
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Increase rotation of thorax
(PA projection) |
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Situation: A pt comes for tx of an arthritic condition o fthe right shoulder. The radiologist orders AP internal/external rotation projections as well as an inferosuperior axiolateral projection o fthe scapulohumeral joint. However, pt can't abduct the arm for this projection. What other projection will best demonstrate the scapulohumeral joint space?
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AP oblique
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Situation: A pt enters the ED w a possible AC joint separation. The pt is paraplegic; therefore, the study can't be done erect. What routine would be performed to diagnose this condition?
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Non-weight-bearing and weight-bearing-type projections performed with the patient recumbent by pulling down on the shoulders.
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Situation: A pt enters the ED w a possible bony defect or fx of the midwing area of scapula. Pt can stand. In addition to the routine AP scapula projection with arm abducted, what would best demonstrate the involved area?
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Have pt reach across the chest and grasp opposite shoulder for a lateral scapula projection.
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T/F: A posterior dislocation of the shoulder occurs more frequently than an anterior dislocation.
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FALSE.
Anterior dislocation occurs more frequently. |
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What position demonstrates the greater tubercle in profile medially?
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None of the above
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Supraspinatus outlet projection
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Neer method
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Inferosuperior axial (patient supine) projection
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Lawrence method
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Posterior oblique, glenoid cavity projection
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Grashey method
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Where is the central ray directed for the Scapular Y lateral projection?
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Mid-scapula
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