Just Parameters for Projections

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15 Terms

1
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PA Erect Chest

  • 180-200cm SID.

  • Broad.

  • 110-125kVp.

  • 2-10mAs or AEC (pick the two lateral chambers).

  • CR at T7, collimate to C7 above and abdomen below (roughly).

    • Shoulder blades rolled down and forward.

    • 5-10 degrees caudal (downwards) angulation of tube.

2
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Lateral Chest

  • 180-200cm SID.

  • 100-105kVp.

  • 15-30mAs or AEC central chamber.

  • CR: T7

  • C7 and abdomen included in collimation.

3
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AP erect and supine chest

  • 90-100kVp.

  • 1-5mAs.

4
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AP and lateral forearm

  • 100cm SID.

  • 55-60kVp.

  • 2-5mAs.

  • CR centred at interosseous membrane.

  • Collimate to include carpals distally and elbow proximally.

5
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AP and external oblique elbow

  • 100cm SID.

  • 50-55kVp.

  • 2-5mAs.

  • Centre at cubital fossa.

  • Collimate 8-10cm distal humerus and prox. radius and ulna.

6
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Lateral elbow

  • 100cm SID.

  • 55-60kVp.

  • 3-5mAs.

  • CR at mid-elbow joint, roughly between medial and lateral epicondyles.

  • Collimate for 8-10cm distal humerus and prox. R+U

7
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PA, oblique, and lateral fingers AND thumbs

  • 100cm SID.

  • 50-55kVp.

  • 1-2mAs.

  • CR at proximal phalanx.

  • Collimate to include skin edge distally, metacarpal proximally, and either fingers on either side laterally.

8
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PA and Oblique hand

  • 100cm SID.

  • 50-55kVp.

  • 1-2mAs.

  • CR at head of 3rd metacarpal.

  • Collimate for 2-3cm of distal R+U.

9
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PA and oblique wrist

  • 100cm SID.

  • 50-55kVp.

  • 2-3mAs.

  • CR centred at distal radius.

  • Collimate for metacarpophalangeal joint distally and 8-10cm of radius and ulna proximally.

10
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AP, oblique, and lateral toes

  • 100cm SID.

  • 50-55kVp.

  • 1-3mAs.

  • (ANGLE UP 2-5 degrees).

  • CR centred at metatarsophalangeal joint.

  • Collimate to include skin edge, toes either side, and base of metatarsal.

11
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AP, oblique, and lateral foot.

  • 100cm SID.

  • 52-60kVp (55-60 for oblique).

  • 3-6mAs.

  • CR centred to base of 3rd metatarsal.

  • Collimate to include full foot (calcaneus shadow included).

  • 5-15 degree cephalic angle (depending on steepness of foot arch).

12
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axial calcaneus

  • 100cm SID.

  • 60-65+kVP.

  • 5-8mAs.

  • CR centred base of 3rd metatarsal.

  • Angle ray 40 degrees cephalad.

  • Collimate to include skin edges of lateral and medial edges of foot and edge of heel.

13
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Lateral calcaneus

  • 100cm SID.

  • 55-60kVp.

  • 3-5mAs.

  • CR centred slightly inferior and posterior to malleoli.

  • Collimate to base of MT and skin edge.

14
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AP, oblique, and mortise ankle

  • 100cm SID.

  • 55-60kVp.

  • 3-5mAs.

  • CR centred between and at level of malleoli.

  • Collimate for distal 1/3 of tib/fib and skin edge inferior and laterally.

15
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Lateral ankle

  • 100cm SID.

  • 55-60kVp (possibly upper end).

  • 3-5mAs.

  • CR centred at medial malleolus.

  • Collimate for tarsometatarsal joint distally, skin edges, distal 1/3 of tib/fib.