Scoliosis (lateral bending view)

Dr Craig Hacking and Alan Ho et al.

Scoliosis lateral bending views are additional scoliosis projections accompanying the standard PA/AP views with the aim of assessing the patient’s lateral range of spinal motion 1.

  • patient erect or supine
  • patient bending their upper body laterally (right and left) from the hips as much as possible
  • ensure patient aligned centrally to the IR
  • ensure rotation of hips and shoulders is reduced as much as possible (some rotation inherent to scoliosis may be inevitable)
  • ensure at least 3-5 cm of iliac crests are present on the radiograph
  • anteroposterior or posteroanterior projection
  • suspended expiration
  • centering point
    • dependent on the area of interest, patient height and detector size
  • collimation
    • dependent on orthopedic preference and imaging modality
    • superiorly to include all vertebrae of interest (may be C7)
    • inferiorly to include the sacral region (may be S1 or level of femoral heads)
    • lateral collimation sufficient to include all of spinal curvature
  • orientation
    • portrait
  • detector size
    • 35 cm x 43 cm
    • 35 cm x 90 cm (if available)
  • exposure
    • 80-95 kVp (digital)
    • 40-60 mAs
  • SID
    •  100 cm - 150 cm
  • grid
    • yes
  • area of scoliosis should be visible with evidence of iliac crests inferiorly
  • no patient rotation
    • rotated vertebrae may be distinguished from scoliotic vertebrae in that:
      • rotated vertebral bodies will have their long axes straight and
      • scoliotic vertebral bodies will have a lateral deviation
  • bony margins and trabecular patterns should both be clearly visible in thoracic and lumbar vertebrae
  • PA projections should be considered over the AP projection for the reduced dose to radiosensitive organs situated anteriorly
    • although the PA projection may be difficult to achieve if the patient is in a prone position
  • a compensatory wedge filter may be appropriate to achieve isodensity throughout the image 1
Radiographic views
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Article information

rID: 58528
System: Spine
Section: Radiography
Synonyms or Alternate Spellings:

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