摘要
目的多层CT血管造影(MSCTA)图像中观察到寰椎椎动脉沟周围一种未被报道过的额外骨突,对其进行分析探讨以增加对其认识。方法对736例头颈部MSCTA检查患者的寰椎椎骨进行三维重建,有26例患者在寰椎后弓上方发现一种未被报道过的额外骨突,仔细观察该额外骨突的发生位置、形态特征及其与椎动脉的空间关系,对其来源、归属、命名及临床意义进行分析探讨。结果本组共26例患者出现该额外骨突,发生率为3.5%(26/736);15例为单独发生,11例合并有其他类型沟桥发生形成复合桥;均部分性地覆盖于椎动脉的上方,其中有5例对相应椎动脉形成挤压,造成椎动脉局限性变形变窄。结论该额外骨突发生位置、形态特征及其与椎动脉的空间关系与以往发现的后桥(ponticulus posticus,PP)、侧桥(ponticulus lateralis,PL)边桥(ponticulus borderland,PB)等各型沟桥极为类似,而且也有可能对椎动脉形成挤压,具有一定临床意义,亦应归属为沟桥的一种类型,可命名为中桥(ponticulus middle,PM)。
Objective： To studya type of unreported extra bony protrusion around vertebral groove of the atlas using multiple slice computed tomography angiography （MSCTA）. Methods MSCTA of 736 patients were undergone 3-dimentional reconstruction, the unreported extra bony protrusion located above the posterior arch of the atlas was found in 26 patients. We observed the locations, morphological features of the extra bony protrusions, and their spatial relationship with the vertebral arteries. The occurrence, development of the extra bony protrusion, the nomenclature and clinical significance were analyzed. Results The extra bony protrusion was found in 26 patients, the occurrence rate was 3.53% （26/736）. Among of them, 15 cases were occurred alone, 11 cases were occurred in combination with other types of ponticulus. These bony protrusions located above vertebral artery （VA）, 5 cases were found to compress related VAs, as a result, the VAs were locally stenosed. Conclusions The location, morphological feature, and its spatial re- lationship with VA of the extra bony protrusion were analogous to previously found types of ponticulus, such as pontic- ulus posticus（PP）, ponticulus lateralis （PL）, ponticulus porderland （PB）, etc. It also could compress the VA, so it could relate to clinical significance, h also should be a type of ponticulus, which ponticulus middle （PM） can be used.
出处
《实用医学影像杂志》
2017年第2期101-103,共3页
Journal of Practical Medical Imaging
基金
广东省医学科研基金(A2016371)
广东省佛山市科技局医学类科技攻关项目(2015AB000792)
