Objective:To explore the CT manifestations of intervertebral disc calcification(IDC)in children patients and its di-agnostic value in comparison with plain film.Methods:CT and plain film data of sixteen children with IDC were collected.The images were analyzed from the following aspects:counting the involved discs of each patient

locating the calcification in each ill disc and nearby tissue

observing the morphological features of calcification

and vertebral tube involvement.Results:①Fifteen patients had one or more than one cervical disc involved

but in only one patient

calcification involved five thoracic discs.Twenty-six discs were calcified in all

in which cervical disc accounted for 77%

and thoracic disc 23%.Most calcifications were nodular or patchy with different size.Sixteen calcification located at the anterior half segment of involved discs;Eight in the central part;only two at the posterior part.②CT and plain film detected calcification respectively of 26 and 25 discs.The for-mer was superior in displaying the location and appearance of calcification

and disclosing vertebral tube and nearby tissue in-volvement.Conclusion:CT is better than plain film in disclosing the details of ill disc.