Vlahovitch B, Fuentes J M, Choucair Y
Neurochirurgie. 1980;26(1):55-8.
Discography seems to have lost some interest for diagnosis in froomt of the new methods of myelo and radiculography with Metrizamide. But it remains still usefull before operation in some cases of lumbo-sciatic and cervico brachial pains. Beside the already known morphological disturbances of the disks it appeared very important to follow up the turnover of the contrast medium in the vertebral interspace. The turnover study of the contrast was performed by successives X ray views taken 12 hours, 24 hours and 48 hours after discography and also in some cases by the analysis of the half-life curve of a radioactive isotope (Technetium) injected jointly with the contrast in the disk. In the normal lumbar disk the contrast medium remains still visible after a delay of 24 hours, while it disappears completely at this time in cases of discopathy. This fact was also confirmed by isotope turnover. In cervical disk this information remains valuable but with a little shorter delay. This radiological sign remains trusty for the great majority of operated discopathies.
与使用甲泛葡胺的脊髓造影和神经根造影等新方法相比，椎间盘造影在诊断方面似乎已不再那么受关注。但在某些腰坐骨神经痛和颈臂痛病例中，它在手术前仍有作用。除了已知的椎间盘形态学紊乱外，观察椎间隙中造影剂的代谢情况显得非常重要。造影剂代谢研究是在椎间盘造影后12小时、24小时和48小时连续进行X线检查，在某些情况下还通过分析与造影剂联合注入椎间盘的放射性同位素（锝）的半衰期曲线来进行。在正常腰椎椎间盘中，造影剂在延迟24小时后仍可见，而在椎间盘病变时此时造影剂已完全消失。这一事实也得到了同位素代谢的证实。在颈椎椎间盘中，这一信息仍然有价值，但延迟时间稍短。对于大多数接受手术的椎间盘病变，这一放射学征象仍然可靠。
