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What Do the Experts Say? –
Spinal Cord
•
Difficult to see true cord on CT
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Often not specifically covered in
atlases
•
Circumferential extend?
•
Contour cord or canal?
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Superior/Inferior extent
•
Entire length visible on planning
scan or set distance from PTV?
•
Use MRI fusion, if available
•
Contour to the bony limits of the
canal
•
For lung cases, superior limit is
the same as oesophagus (cricoid
cartilage)
•
Inferior limit is L2/L3 junction
Challenges
Recommendations