Changes

Upper limits of values vary with body constitution of the patient, but in adults they are generallyas follows:<ref name="RojasVermess2009">{{cite journal|last1=Rojas|first1=C.A.|last2=Vermess|first2=D.|last3=Bertozzi|first3=J.C.|last4=Whitlow|first4=J.|last5=Guidi|first5=C.|last6=Martinez|first6=C.R.|title=Normal Thickness and Appearance of the Prevertebral Soft Tissues on Multidetector CT|journal=American Journal of Neuroradiology|volume=30|issue=1|year=2009|pages=136–141|issn=0195-6108|doi=10.3174/ajnr.A1307}}</ref>*C1[[File: 8CT of prevertebral space.5 mm*C2: 6 mm*C3: 7 mm*C4/C5: variable due to variable height for cricoid/oesophagus*C6: 18 mm*C7: 18 mmjpg|thumb|center|170px]]