PT - JOURNAL ARTICLE AU - K Okamoto AU - J Ito AU - S Tokiguchi AU - T Furusawa TI - High-resolution CT findings in the development of the sphenooccipital synchondrosis. DP - 1996 Jan 01 TA - American Journal of Neuroradiology PG - 117--120 VI - 17 IP - 1 4099 - http://www.ajnr.org/content/17/1/117.short 4100 - http://www.ajnr.org/content/17/1/117.full SO - Am. J. Neuroradiol.1996 Jan 01; 17 AB - PURPOSE To evaluate the development of the sphenooccipital sychondrosis as seen on high-resolution thin-section CT scans.METHODS We retrospectively reviewed the records of 253 patients, ages 1 to 77 years old, who had had thin-section CT examination of the skull base.RESULTS An ossification center appeared midline in the patients who were 8 to 13 years old. Six of 12 girls showed additional symmetric ossification centers on either side of the midline; however, this pattern was not seen in boys. No sphenooccipital synchondrosis persisted in any patient past the age of 13 years.CONCLUSION High-resolution CT scans of the skull base can show a pattern of progressive ossification of the sphenooccipital synchondrosis, which can be readily recognized and predicted.