Flash双源CT智能最佳管电压技术在小儿中耳胆脂瘤面神经管裸露中的应用

发布时间：2018-03-22 14:00

本文选题：面神经　切入点：胆脂瘤　出处：《中国医学影像技术》2015年04期 　论文类型：期刊论文

【摘要】：目的评价高分辨率CT(HRCT)智能最佳管电压技术(CARE kV技术)在中耳炎患儿颞骨检查中对降低辐射剂量和显示面神经管裸露的应用价值。方法收集中耳炎患儿(2~4岁)176例;按就诊先后顺序分为A组88例,采用CARE kV技术行颞骨HRCT扫描,B组88例,常规颞骨HRCT扫描。比较两组中耳胆脂瘤、面神经管裸露、HRCT图像质量及辐射剂量情况,并进行统计学分析。结果 A、B两组中耳胆脂瘤发生率[59.09%(52/88)vs 64.77%(57/88)]差异无统计学意义(χ2=0.020,P=0.887)。术前HRCT诊断中耳胆脂瘤的准确率两组间差异无统计学意义[96.15%(50/52)vs 96.49%(55/57),χ2=0.199,P=0.639]。A、B两组术前HRCT诊断面神经管裸露发生率分别为29.54%(26/88)和31.82%(28/88),术中观察面神经管裸露发生率分别为27.27%(24/88)和28.41%(25/88),两组间术前HRCT诊断及术中观察面神经管裸露发生率差异均无统计学意义(χ2=0.978、χ2=0.440,P均0.05)。鼓室段面神经管裸露发生率最高(25/49,51.02%),迷路段最低(5/49,10.20%)。两组中,前膝段面神经管裸露长度术前HRCT与术中测量值差异有统计学意义(P均0.05),其余各段差异均无统计学意义(P均0.05)。两组间CT平均值、噪声(SD)、SNR、CNR差异无统计学意义(P均0.05)。两组间剂量长度乘积(DLP)、有效剂量(ED)差异均有统计学意义(P=0.039、0.028)。结论小儿颞骨HRCT智能最佳管电压技术能准确诊断面神经裸露,同时保证图像质量并有效降低辐射剂量。
[Abstract]:Objective to evaluate the value of high-resolution CT-HRCT (intelligent best tube voltage technique) in temporal bone examination of children with otitis media. Methods 176 cases of otitis media were collected. 88 cases were divided into group A (n = 88), group B (n = 88), HRCT scanning group B (n = 88) and HRCT scan of temporal bone (n = 88) by CARE kV technique. Results there was no significant difference in the incidence of middle ear cholesteatoma between the two groups [59.09%(52/88)vs 64.77 and 57 / 88] (蠂 ~ 20.020). The accuracy rate of preoperative HRCT in diagnosing middle ear cholesteatoma was not significantly different between the two groups [96.15%(50/52)vs 96.49 / 55 / 57, 蠂 ~ (20). 1999 / P ~ (0.639)]. HRCT was used to diagnose facial cholesteatoma in the two groups before operation. There was no significant difference between the two groups in the accuracy of diagnosis of middle ear cholesteatoma. The incidences of intraoperative facial canal exposure were 29.54 / 88 and 31.822 / 88, respectively. The incidence of facial canal nudity was 27.2727% / 88% and 28.41% / 88% respectively. There was no significant difference between the two groups in preoperative HRCT diagnosis and intraoperative observation of the incidence of facial canal exposure (蠂 2 0.978, 蠂 2 0.44 0 0. 05%, P < 0 05). The highest incidence of neural tube nudity was 25 / 49 / 51.02 and the lowest was 5 / 49 / 49.10.20% in both groups. There was significant difference in HRCT between preoperative and intraoperative measurements of the length of facial nerve tube exposed to anterior genicular segment (P < 0.05), but there was no significant difference in other segments (P < 0.05) between the two groups, and there was no significant difference between the two groups (P > 0.05). There was no significant difference in HRCT between the two groups (P < 0.05). There were significant differences between the two groups in dose length product (DLPU) and effective dose (EDD). Conclusion the best tube voltage technique for the diagnosis of facial nerve nudity can be used in the diagnosis of facial nerve nudity in children with temporal bone HRCT. At the same time, the image quality is guaranteed and the radiation dose is reduced effectively.
【作者单位】：昆明医科大学第一附属医院医学影像科;昆明医科大学第一附属医院口腔颌面外科;
【基金】：云南省科技厅应用基础研究计划项目(2003C0087M)
【分类号】：R764;R816.96

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