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What Do the Experts Say? –

Spinal Cord

Difficult to see true cord on CT

Often not specifically covered in

atlases

Circumferential extend?

Contour cord or canal?

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