Projection Radiography Positioning Quiz
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Questions and Answers

How should the patient be positioned for the PA projection of digits 2-5?

  • Supine with fingers extended and separated
  • Seated with the hand pronated and fingers extended (correct)
  • Standing with the hand pronated and fingers flexed
  • Seated with the hand supinated and fingers flexed

What is the evaluation criteria for the PA projection of digits 2nd - 5th?

  • Concave phalange shafts and adjacent digits superimposed
  • Slight concavity on one side of the phalange shafts with a semi-straight edge on the other side
  • Rotated medially digits with full concavity on one side of the phalange shafts
  • Equal soft tissue and concavity, no superimposition of adjacent fingers (correct)

What is the positioning assistance used for the lateral projection of digits 2-5?

  • Cotton swab
  • Square sandbag
  • Triangle sponge
  • Circular sponge (correct)

How should the hand be positioned for the AP projection of digit 1?

<p>Internally rotated and supinated with posterior surface of thumb in contact with the IR (D)</p> Signup and view all the answers

What is the evaluation criteria for the AP projection of digit 1?

<p>Equal soft tissue and concavity, no rotation indicated by equal concavity on each side (B)</p> Signup and view all the answers

How should the hand be positioned for the PA oblique projection of digit 1?

<p>Pronate hand, abduct thumb slightly away from other fingers (B)</p> Signup and view all the answers

What is the positioning of digits 3-5 for the PA oblique projection?

<p>Lateromedial rotation for digit 3-5 (B)</p> Signup and view all the answers

What is the evaluation criteria for the PA oblique projection of digit 1?

<p>Slight concavity on one side of the phalange shafts with a semi-straight edge on the other side (A)</p> Signup and view all the answers

What is important to check to ensure true AP position during thumb digit imaging?

<p>Looking at nailbed of thumb digit (C)</p> Signup and view all the answers

How should patients be positioned for imaging?

<p>Sitting facing LT(L) (A)</p> Signup and view all the answers

What does CR stand for?

<p>Central Ray (B)</p> Signup and view all the answers

Which projection is used for evaluating fractures, dislocations, and pathology at the base of the 1st metacarpal and trapezium?

<p>PA Stress Thumb Projection (D)</p> Signup and view all the answers

What is the primary purpose of the evaluation criteria for the Lateral 1st Digit projection?

<p>To visualize the base of the 1st metacarpal and trapezium (C)</p> Signup and view all the answers

What is the alternative projection for the 1st digit that increases OID and is NOT ideal for this digit?

<p>AP Axial Projection Modified Robert’s Method (D)</p> Signup and view all the answers

In the PA Stress Thumb Projection, what clinical indication does it primarily address?

<p>Sprain or tearing of the ulnar collateral ligament of the thumb (D)</p> Signup and view all the answers

Which projection ensures that the base of 1st metacarpal and trapezium are well visualized without superimposition?

<p>AP Axial Projection Modified Robert’s Method (D)</p> Signup and view all the answers

What type of projection may be used to adapt to an increase in OID for the 1st digit?

<p>Digits PA 1st Digit (A)</p> Signup and view all the answers

Which projection should ensure that the entire thumb, 1st metacarpal, and trapezium are visualized in a true lateral position?

<p>CR Perpendicular Enters at the 1st MCP joint (C)</p> Signup and view all the answers

What is the clinical indication for using an AP Axial Projection Modified Robert’s Method?

<p>Fractures, dislocations, and pathology at the base of the 1st metacarpal and trapezium (B)</p> Signup and view all the answers

(skiers thumb) trauma protocol - 2 views refers to which projection?

<p>(Adaptation Increases OID) NOT ideal position for the 1st digit (C)</p> Signup and view all the answers

What view increases OID for hand digital radiography?

<p>Digits PA 1st Digit (C)</p> Signup and view all the answers

What type of injury does a PA Stress Thumb Projection primarily address?

<p>Sprain or tearing of the ulnar collateral ligament of the thumb (C)</p> Signup and view all the answers

Flashcards

PA Digit 2-5 Positioning

Fingers extended and together, forearm pronated.

PA Digit 2-5 Evaluation

Full digit view, correct angle, no rotation.

AP Digit 1 Positioning

Thumb neutral, forearm pronated, wrist straight.

AP Digit 1 Evaluation

Full digit view, correct angle, no rotation.

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PA Oblique Digit 1 Positioning

Thumb neutral, forearm pronated, wrist straight, fingers 3-5 extended.

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PA Oblique Digit 1 Evaluation

Full digit view, correct angle, no rotation.

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True AP Thumb

Thumb's volar surface parallel to the image receptor during imaging.

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OID Minimization

Positioning patients to reduce the distance between the body part and the image receptor.

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CR

Central Ray, the X-ray beam's central axis.

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PA Oblique Projection Purpose

Evaluates fractures, dislocations, and pathology at the base of the 1st metacarpal and trapezium.

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Lateral Digit 2-5 Positioning Assistance

Used for maintaining proper positioning during the lateral projection of digits 2-5.

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Lateral 1st Digit Evaluation

Visualize the whole thumb, 1st metacarpal, and trapezium in a true lateral view.

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AP Axial Modified Robert's Method

Alternative projection for the 1st digit, increases OID.

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Lateral Projection Adaptation

A lateral projection use to counteract increasing OID for the 1st digit.

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PA Stress Thumb Projection Indication

Used for ligamentous injuries or instability in the thumb area.

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AP Axial Modified Robert’s Method (Skiers Thumb)

Used for a trauma protocol (skiers thumb) - 2 views.

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Patient Positioning for Hand Imaging

Position the patient to minimize OID (Object-to-Image Receptor Distance) during hand and finger imaging for optimal image quality.

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Alternative Projection

A different projection is available for imaging the 1st digit or other parts of the hand.

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Evaluation Criteria

Specific standards that medical professionals use to assess the quality and interpretation of medical diagnostic images.

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Projection Definitions

Definitions that clarify the specific types of X-ray imaging projections used.

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Study Notes

Hand and Finger Positioning

  • For a PA projection of digits 2-5, the patient's hand should be positioned with fingers extended and together, and the forearm pronated.

Evaluation Criteria

  • For a PA projection of digits 2-5, the evaluation criteria include visualization of the entire digit, proper angle, and absence of rotation.
  • For an AP projection of digit 1, the evaluation criteria include visualization of the entire digit, proper angle, and absence of rotation.
  • For a PA oblique projection of digit 1, the evaluation criteria include visualization of the entire digit, proper angle, and absence of rotation.

Positioning Assistance

  • Positioning assistance is used for the lateral projection of digits 2-5 to help maintain proper positioning.

AP Projection of Digit 1

  • For an AP projection of digit 1, the hand should be positioned with the thumb in a neutral position, forearm pronated, and wrist straight.

PA Oblique Projection of Digit 1

  • For a PA oblique projection of digit 1, the hand should be positioned with the thumb in a neutral position, forearm pronated, and wrist straight.
  • Digits 3-5 should be positioned with fingers extended and together, and the forearm pronated.

True AP Position

  • To ensure a true AP position during thumb digit imaging, check that the volar surface of the thumb is parallel to the image receptor.

Patient Positioning

  • Patients should be positioned to minimize OID (Object-to-Image Receptor Distance) during hand and finger imaging.

Projection Definitions

  • CR stands for Central Ray.
  • A PA oblique projection is used for evaluating fractures, dislocations, and pathology at the base of the 1st metacarpal and trapezium.

Lateral 1st Digit Projection

  • The primary purpose of the evaluation criteria for the Lateral 1st Digit projection is to visualize the entire thumb, 1st metacarpal, and trapezium in a true lateral position.

Alternative Projections

  • An AP Axial Projection Modified Robert’s Method is an alternative projection for the 1st digit that increases OID and is not ideal for this digit.
  • A lateral projection may be used to adapt to an increase in OID for the 1st digit.

Clinical Indications

  • A PA Stress Thumb Projection primarily addresses a clinical indication of ligamentous injury or instability.
  • An AP Axial Projection Modified Robert’s Method is used for a (skiers thumb) trauma protocol - 2 views.
  • A PA Stress Thumb Projection primarily addresses a clinical indication of ligamentous injury or instability.

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Related Documents

Finger Positioning Digits 1-5 (PDF)

Description

Test your knowledge of finger positioning and projection radiography with this quiz. Practice essential projections for digits 2-5, including PA, PA oblique, and lateral views. Learn about general positioning guidelines and correct CR and collimation techniques.

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