ASMR

What Do the Experts Say? – Spinal Cord

Challenges

Recommendations

• 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