低剂量螺旋CT在颌面部骨折美容修复中的应用价值探讨<br />-《中国美容医学》

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Title:: Application Value Of Low-dose Spiral CT in Cosmetic Repair of Maxillofacial
Fractures

文章编号:: 1008-6455（2021）04-0061-03

作者:: 许尔长; 田超; 张兰芳; 岳凤文; 蒋婷

Author(s):: XU Er-chang; TIAN Chao; ZHANG Lan-fang; YUE Feng-wen; JIANG Ting

关键词:: [关键词]颌面部骨折; 螺旋CT; 辐射剂量; 图像质量; 三维重建

Keywords:: Key words:maxillofacial fracture; spiral CT; radiation dose; image quality; three-dimentional reconstruction

分类号:: R782.2

文献标志码:: A

摘要:: [摘要]目的：探讨低剂量螺旋CT在颌面部骨折诊治中的应用价值。方法：选取2017年10月-2019年10月于笔者医院就诊的60
例颌面部创伤患者为研究对象，随机分为常规剂量组（160mAs螺旋CT扫描）30例和低剂量组（30mAs螺旋CT扫描）30例，比
较两组图像质量，辐射剂量参数包括容积CT剂量指数（CTDIvol）、剂量长度乘积（DLP）和有效剂量（ED）。结果：两组
满足诊断要求的图像比例比较，差异无统计学意义（P ＞0.05）；低剂量组手术发现47处骨折，常规剂量组手术发现49处骨
折，两组骨折部位及比例构成无显著性差异（P ＞0.05），均以上、下颌骨骨折为主；低剂量组CT三维重建颌面骨折检出率
为93.62%，与常规剂量组CT三维重建检出率95.92%比较，差异无统计学意义（P ＞0.05）；低剂量组辐射剂量参数CTDIvol、
DLP和ED均显著低于常规剂量组，差异有统计学意义（均P ＜0.05）。结论：颌面部骨折患者临床诊疗中采用螺旋CT低剂量扫
描，在保证诊断图像质量、不明显影响诊断准确性同时，大幅减少辐射剂量。

Abstract:: Abstract: Objective To explore application value of low-dose spiral CT in diagnosis and treatment of maxillofacial fractures.
Methods A total of 60 patients with maxillofacial trauma who were treated in the hospital from October 2017 to October 2019
were enrolled. They were randomly divided into routine-dose group (160mAs spiral CT scan) and low-dose group (30mAs
spiral CT scan), 30 cases in each group. The images quality and radiation dose parameters [CT dose index volume (CTDIvol),
dose length product (DLP), effective dose (ED)] were compared between the two groups. Results There was no significant
difference in the proportion of images meeting the diagnostic requirements between the two groups (P ＞0.05). There were 47
and 49 fractures sites in low-dose group and routine-dose group, respectively. There were no significant differences in fracture
sites and proportions between the two groups (P ＞0.05), which were mainly on maxillofacial and mandibular fractures. There
was no significant difference in detection rate of maxillofacial fractures by 3D CT reconstruction between low-dose group and
routine-dose group (93.62% vs 95.92%)(P ＞0.05). The radiation dose parameters (CTDIvol, DLP, ED) in low-dose group were
significantly lower than those in routine-dose group (P ＜0.05). Conclusion The application of spiral CT low-dose scan in the
clinical diagnosis and treatment of patients with maxillofacial fractures can significantly reduce radiation dose while ensuring
quality of diagnostic images and not significantly affecting diagnostic accuracy.

《中国美容医学》[ISSN:1008-6445/CN:61-1347/R]

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