St Cath Situational Judgement Flashcards

A radiograph of a lateral patella reveals that the patella is drawn tightly against the intercondylar sulcus. Which positioning modification should be performed to improve the quality of the image during the repeat exposure?.

Weight-Bearing Foot - Whole Series
Decrease flexion to 5-10 degrees
Under-rotation of the knee
Over-flexion

A young male patient comes to the radiology department with a clinical history of Osgood-Schlatter disease. Which single projection of the basic knee series will best demonstrate this condition?.

Camp Coventry
AP
Lateral Knee
Oblique

A patient with bony, loose bodies (or "joint mice") within the knee joint comes to radiology for a knee series. The AP and lateral knee projections fail to demonstrate any loose bodies. What additional knee projection can be taken to better demonstrate them?.

Hougston
Sunrise
Skyline
Camp Coventry

A patient comes to radiology with a history of a possible erosion of the foramen rotundum. Which one of the following projections would best demonstrate this
structure?

PA axial with 30 degrees caudal angle to OML
AP axial with 37 degrees caudal angle to OML
P A axial with 15 degrees caudal angle to OML
SMV

Pt comes to radiology for a follow up study for a clay shoveler's fracture. Which of the following projections will best demonstrate this fracture?

AP axial-vertebral arch.
lateral c/spine
lateral t/spine
AP c/spine

______________________ is the determination of the cause and effect of a situation or work.

synthesis
analysis
evaluation
critique

A young female patient comes to radiology for a scoliosis study. The patient has had this series performed often. How much will the breast dose be decreased if a PA rather than an AP projection is taken?

to ½
will not make a significant difference if good collimation is used.
to 1/10
to ¼

A radiograph of an intended AP mortise projection reveals that the lateral malleolus is superimposed over the talus, and the distal tibiofibular joint is not well demonstrated. What is the most likely reason for this radiographic outcome?

Overflexion
Over-rotation
Lateral Knee
Under-rotated

A patient enters the ER with severe shoulder pain and a history of chronic dislocation of the shoulder. The radiologist wants the technologist to take an AP shoulder, neutral rotation and a second projection that would demonstrate any signs of the Hill-Sac's defect. Which one of the following projection should be taken?

AP apical oblique axial
trans thoracic lateral
AP with as much internal rotation as possible.
AP oblique

A patient comes to radiology for an arthritic condition of the right
shoulder. The radiologist orders AP rotation projections as well as an
inferior-superior axial lateral projection of the scapula humeral joint
however, the patient can't abduct the arm for this projection. Which other projection will best demonstrate the scapulohumeral joint space?

AP projection-neutral rotation
AP oblique
Scapular Y
Trans thoracic lateral

A referring physician suspects that a sub-acromial spur may be the cause for a patient's arm numbness. She asked the technologist for a projection that would best demonstrate any possible spurs. Which one of the following projections would accomplish this objective?

Grashey method
Lawrence method
Garth method
Neer method

A patient enters ER with facial bone injuries.. The physician is concerned about a possible blowout fracture of the left orbit. Which one of the following three projections routines would best diagnose this injury?

Parietoacanthial, lateral and 15 degrees P A Caldwell facial bones Projections

Parietoacanthial, lateral facial bones and submentovertex projections

Modified parietoacanthial, superoinferior tangential and lateral facial bone projections

Modified parietoacanthial, 30 degrees P A and lateral facial bone projections.

A radiograph of a lateral recumbent knee reveals that the posterior border of the medial femoral condyle (identified by the adductor tubercle) is not superimposed but is slightly posterior to the lateral condyle. The fibular head is also completely superimposed by the tibia. What type of positioning error led to this radiographic outcome?.

Under-rotation of the knee

Lateral Knee

Under-rotated

Overflexion

A radiograph of the Teufel method (PA axial oblique) demonstrates distortion of the acetabulum. During positioning, the patient was rotated 35-40 degrees toward the affected side and the CR was angled 20 degrees cephalic. What modifications are needed during the repeat exposure?.
Angle the CR more Caudal
Decrease flexion to 5-10 degrees
Correct!
Reduce the CR angle to 12 degrees cephalic
Angle 5-7 degrees cephalic

A radiograph of an AP knee projection demonstrates that the femorotibial joint space is not open at all. The patient is young and has no history of degenerative disease. what type of positioning modification may improve the outcome of this projection?.

Angle 5-7 degrees cephalic
Under-rotated
Lateral Knee
Angle the CR more Caudal

A radiograph obtained by using the PA axial (Camp-Coventry method) reveals that the distal femoral condyles, articular facets, and intercondylar fossa are asymmetric. What possible positioning errors may have produced this distortion of the anatomy?.

Under-rotation of the knee
Reduce the CR angle to 12 degrees cephalic
CR needs more angle OR the leg needs more angle
Angle the CR more Caudal

A patient enters the ER with a possible dislocation of the elbow. The
patient has the elbow flexed more than 90 degrees. Which one of the
following routines should be performed to confirm the diagnosis?

Jones method and limited lateral projection
Partially flexed AP and limited lateral projection
AP and lateral projection
Coyle method and limited lateral projection

A patient comes to radiology for a cervical spine routine. The study is ordered For non-traumatic reasons. The AP open mouth projection reveals that the base of the skull and upper incisors are superimposed, but they are obscuring the upper
portion of the dens. What should the technologist do to demonstrate the entire dens on the repeat exposure?

Increase flexion of the skull

Perform the AP chewing projection

Increase extension of the skull

Perform the Fuch or Judd method

A patient with a possible Lisfranc joint injury. Which radiographic position(s) best demonstrate this type of injury?.

Overflexion
Lateral Knee
Angle 5-7 degrees cephalic
AP/Lateral weight-bearing foot

A radiograph of an AP oblique with medial rotation of the knee to demonstrate the proximal fibula reveals that there is total superimposition of the proximal tibia and the fibula. What must be modified to correct this projection?.

Over-rotated, rotate more laterally
Under-rotation of the knee
Under-rotated
Angle the CR more Caudal

This position will best demonstrate the left z joint of the t/spine.

RAO
LAT
RPO
AP

A radiograph of a cervicothoracic lateral position demonstrates superimposition of the humeral heads over the upper thoracic spine. Because of an arthritic condition the patient is unable to rotate the shoulders any farther apart. What can the tech do to further separate the shoulders during repeat exposure.

underrotation of upper body
do a fuchs or judd
angle cr 3 to 5 degrees caudad
increase angle to 15 degrees cephalad

______________________ is the determination of the cause and effect of a situation or work.

synthesis
analysis
evaluation
critique

A radiograph of an intended AP mortise projection reveals that the lateral malleolus is superimposed over the talus, and the distal tibiofibular joint is not well demonstrated. What is the most likely reason for this radiographic outcome?

Overflexion
Over-rotation
Lateral Knee
Under-rotated