Table 1.

Patient characteristics

Characteristics	Data
Median age (range), years	62 (26–82)
Sex, n (%) Male Female	12 (42.9%) 16 (57.1%)
Histology, n (%) Lung cancer Gastrointestinal cancer Thyroid cancer Sarcoma Other (Breast, Kidney, Brain, Uterus)	8 (28.6%) 11 (39.3%) 2 (7.1%) 3 (10.7%) 4 (14.3%)
Median number of vertebral levels treated (range)	2 (1–5)
Location of the main treated tumor, n (%) Cervical Upper thoracic (Th1–6) Lower thoracic (Th7–12) Lumbar–Sacral	4 (14.3%) 7 (25.0%) 9 (32.1%) 8 (28.6%)
Median clinical target volume, cm3 (range)	91.3 (20.2–359.6)
Median time to CT-myelogram from planning-CT, days (range)	1 (−4–4)
Median spatial resolution of the axial plane (range), mm/pixel Planning-CT CT-myelogram	1.074 (0.976–1.074) 1.074 (0.272–1.074)