X-Ray Positioning

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Author:
nakomarose
ID:
52161
Filename:
X-Ray Positioning
Updated:
2010-11-30 20:28:22
Tags:
Ray Positioning
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Description:
X-Ray Positioning
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  1. AP Lumbar aka AP Lumbosacral
    • 14 x 17” Cassette, 40” SID – Use gonadal shield
    • Palpate top of iliac crest – CR at this level
    • Set center of film to central ray
    • Vertical CR to midline of body
    • Collimate “9x 16”
    • R or L marker away from structures
    • Instruct patient to exhale and hold
  2. AP Lumbopelvic
    • Up right, against bucky with gonadal shielding
    • 14x17 film, 40" SID
    • Horizontal CR 1 1/2" below top of iliac crest through midline of the body
    • Instruct pt to take a deep breath in, blow it all the way out & hold
  3. Lateral Lumbosacral
    • 14 x 17” Cassette, 40” SID
    • Instruct patient to cross arms to get them out of the way
    • Palpate top of iliac crest – CR at this level
    • Set center of film to central ray
    • Vertical CR between ASIS and PSIS
    • Instruct patient to side-step until hip just touches bucky
    • Collimate 10”x16”
    • R or L marker away from structures
    • Instruct patient to exhale and hold
  4. AP Thoracic
    • Move bucky so middle of 14x17” cassette is in middle of thoracic spine, slightly inferior to the sternal angle, 40" SID
    • Vertical CR to midline of body and CR to center of film
    • Collimate to 7” x 16”
    • Filter on upper thoracic area
    • R or L marker away from structures
    • Instruct patient to inhale and hold
  5. Lateral Thoracic
    • Middle of 14 x 17” cassette, middle of spine (no change after AP) 40”SID
    • Vertical CR posterior glenohumeral joint and CR to center of film
    • Instruct patient to place hands lightly on head and elbows straight ahead
    • Instruct patient to side-step until shoulder touches bucky
    • Collimate 10” x 16”
    • Filter lower thoracic spine for consistent density on film
    • R or L marker away from structures
    • Instruct patient to inhale and hold
  6. APOM
    • Film 10”x 12”
    • SID = 40”
    • CR – Horizontal at C1 just below mastoid tip
    • Set center of film to central ray
    • Collimate to 5 “x 5”
    • R or L marker away from structures
    • Normal breathing is preferred
  7. Lateral Cervical
    • Film 10 x 12”
    • SID = 72”
    • CR – Horizontal to patient, just below angle of the mandible
    • At the level of the hyoid bone (not thyroid cartilage)
    • Set center of film to central ray
    • Collimate no less that 11” top to bottom, 9” side to side
    • R or L marker under chin
    • Normal breathing is preferred
  8. AP Lower Cervical
    • Film 10”x 12”
    • SID 40” but adjusted for tube tilt to 37”
    • (move tube 1” closer for every 5 o to maintain 40” SID)
    • 15o cephalad tube tilt
    • CR – at thyroid cartilage to exit at C4
    • Set center of film to central ray
    • Collimate to 6”x8”
    • R or L marker away from structures
    • Normal breathing is preferred
  9. Swimmer's View
    • Lateral postion with hand behind skull to get it out of the way
    • 10x12 film, 72 inches SID
    • Horizontal ray thru C4, P to ear, thru mastoid
    • Suspended expiration to clear the lower cervical region
  10. Lumbar Oblique
    • 45 degrees to the bucky
    • A: CR vert & horiz 1" lateral (tube side) from L3 SP
    • P: CR vert 2" medial to ASIS on tube side & horiz 1" above the iliac crest on tube side
    • 10 x 12 film, 40 SID
    • Suspended expiration
  11. Cervical Oblique
    • Pt 45 degrees to bucky with head slightly elevated
    • 10 x 12 film, 40 SID
    • CR thyroid cartilage for P & angle of mandible for A
    • CR 15 degrees caudal for A and 15 degrees cephalad for P
  12. PA Chest
    • 14 x 17 film, 72" SID
    • Pt facing bucky with chin resting on bucky
    • CR Vert midline of body, horiz to center of film
    • Exposure taken at the end of the third inhalation
  13. L5-S1 Lateral Spot Lateral
    • Patient is in true lateral position
    • 10 x 12” cassette or smallest film available
    • Horizontal CR through L5-S1,
    • Vertical CR to 1” posterior to the mid-axillary line
    • Collimate no more than 8”x10”
    • R or L marker to indicate side against Bucky
    • Instruct patient to exhale and hold

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