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X-RAY LUMBAR SPINE LAT EXTENSION
Parameters : 1
Also known as : X-RAY LUMBAR SPINE LAT EXTENSION
EXCLUSIVE PRICE
400
Report Delivery
1 Day
Free Sample Collection
Bookings above 500
Pre - Instruction
No Preparation Required.
Covid Safety
Assured
Test Details
Test Code BOBT00656
Test Category Individual Test
Sample Type
Details of X-RAY LUMBAR SPINE LAT EXTENSION
What is X-RAY LUMBAR SPINE LAT EXTENSION?
The lumbar spine flexion and extension views images the lumbar spine which consists of five vertebrae.
Indications
These views are specialized projections to provide functional tests 1 of lumbar spine instability, often in the context of spondylolisthesis.
Patient position
  • the patient is positioned erect:
    • ideally, spinal imaging should be taken erect in the setting of non-trauma to give a functional overview of the lumbar spine
    • all imaging of patients with a suspected spinal injury must occur in the supine position without moving the patient
    • in the lateral decubitus position, position the patient so that the humeri are extended 90 degrees to the thorax, with the elbows flexed so that the forearms are parallel to the thorax. Spinal curvature in the AP projection will determine if a right lateral or a left lateral is performed.
    • when implementing the horizontal beam technique, ensure the distal upper limbs are not overlying the region of interest. Ask the patient to cross their arms over their upper thorax, or to extend them in a similar position to that achieved in the lateral decubitus position
  • flexion
    • at the last possible moment, instruct the patient to 'bend forward' from the lower back, flexing their lower spine
  • extension
    • at the last possible moment, instruct the patient to 'lean back' from the lower back essentially extending their lower spine
Technical factors
  • Lateral projection
  • Expiration (to minimize superimposition of the diaphragm over the upper lumbar spine)
  • Centering point
    • the level of the iliac crest
    • coronal centering point is directly over the lumbar vertebra, which corresponds to the posterior third of the abdomen
    • the central ray is perpendicular to the image receptor
  • Collimation
    • superiorly to include the T12/L1
    • inferior to include the sacrum
    • anterior to include the anterior border of the lumbar vertebral bodies
    • posterior to include all elements of the posterior column, particularly the spinous processes
  • Orientation
    • portrait
  • Detector Size
    • 35 cm x 43 cm
  • Exposure
    • 70-80 kVp
    • 60-80 mAs
  • SID
    • 110 cm
  • Grid
    • Yes (ensure the correct grid is selected if using focused grids)
Routine Tests
X-RAY LUMBAR SPINE LAT EXTENSION
Parameters : 1
Also known as : X-RAY LUMBAR SPINE LAT EXTENSION
EXCLUSIVE PRICE
400
Report Delivery
1 Day
Free Sample Collection
Bookings above 500
Pre - Instruction
No Preparation Required.
Covid Safety
Assured
Test Details
Test Code BOBT00656
Test Category Individual Test
Sample Type
Details of X-RAY LUMBAR SPINE LAT EXTENSION
What is X-RAY LUMBAR SPINE LAT EXTENSION?
The lumbar spine flexion and extension views images the lumbar spine which consists of five vertebrae.
Indications
These views are specialized projections to provide functional tests 1 of lumbar spine instability, often in the context of spondylolisthesis.
Patient position
  • the patient is positioned erect:
    • ideally, spinal imaging should be taken erect in the setting of non-trauma to give a functional overview of the lumbar spine
    • all imaging of patients with a suspected spinal injury must occur in the supine position without moving the patient
    • in the lateral decubitus position, position the patient so that the humeri are extended 90 degrees to the thorax, with the elbows flexed so that the forearms are parallel to the thorax. Spinal curvature in the AP projection will determine if a right lateral or a left lateral is performed.
    • when implementing the horizontal beam technique, ensure the distal upper limbs are not overlying the region of interest. Ask the patient to cross their arms over their upper thorax, or to extend them in a similar position to that achieved in the lateral decubitus position
  • flexion
    • at the last possible moment, instruct the patient to 'bend forward' from the lower back, flexing their lower spine
  • extension
    • at the last possible moment, instruct the patient to 'lean back' from the lower back essentially extending their lower spine
Technical factors
  • Lateral projection
  • Expiration (to minimize superimposition of the diaphragm over the upper lumbar spine)
  • Centering point
    • the level of the iliac crest
    • coronal centering point is directly over the lumbar vertebra, which corresponds to the posterior third of the abdomen
    • the central ray is perpendicular to the image receptor
  • Collimation
    • superiorly to include the T12/L1
    • inferior to include the sacrum
    • anterior to include the anterior border of the lumbar vertebral bodies
    • posterior to include all elements of the posterior column, particularly the spinous processes
  • Orientation
    • portrait
  • Detector Size
    • 35 cm x 43 cm
  • Exposure
    • 70-80 kVp
    • 60-80 mAs
  • SID
    • 110 cm
  • Grid
    • Yes (ensure the correct grid is selected if using focused grids)
 

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