咽鼓管上隐窝形态特征MSCT多平面重组观察及测量研究

发布时间：2018-06-14 08:52

本文选题：咽鼓管上隐窝 + 多层螺旋CT　；参考：《中华耳科学杂志》2014年02期

【摘要】：目的观察咽鼓管上隐窝(STR)形态特征,探讨MSCT测量其大小的合理方法。方法两位经验丰富的医生对20例40侧正常颞骨MSCT容积数据进行后处理,分别沿听眦线(A法)、基线30°夹角线(B法)、水平线(C法)及听小骨(D法)重组Collins层面,沿锤砧关节长轴平行及垂直方向实时重组观察STR周壁形态,采用VR观察其大体形态特征,测量其最大深度(AP)和最大宽度(T)。取2位医师测量平均值作为统计数据进行分析,计算其变异系数,测量结果采用配对t检验。结果 STR前内、前外及前顶壁依据其气化程度呈不同程度弧形特征,后内和后外壁均较平直,大体形态呈现漏斗状。A~D四种方法AP均值依次为:(4.07±1.18)mm、(4.38±1.10)mm、(4.02±1.09)mm和(4.31±0.88)mm,其中,方法B和D显著大于方法A和C,变异系数:ACBD;T均值分别为:(4.16±1.07)mm、(3.68±0.98)mm、(4.11±1.02)mm和(3.67±0.79)mm,其中,方法A和C显著大于方法B和D,变异系数:BACD。结论沿听小骨重组,解剖标志明确,操作简单,数据稳定,可作为测量STR大小可靠方法。
[Abstract]:Objective to observe the morphological characteristics of STR in the superior eustachian tube and to explore a reasonable method for measuring its size by MSCT. Methods two experienced doctors performed post-processing of MSCT volume data of 40 normal temporal bones in 20 patients. The Collins plane was reconstructed along the canthus A method, the baseline 30 掳angle line B method, the horizontal line C method and the auditory bone D method). Parallel and vertical direction along the long axis of the hamster anvil joint, the shape of the surrounding wall of the STR was observed in real time, and the gross morphological characteristics of the STR were observed by VR. The maximum depth of APs and the maximum width of the STR were measured. The mean values of two physicians were taken as statistical data to analyze and calculate the coefficient of variation. The results were measured by paired t test. Results the anterior outer wall and anterior top wall showed different degree of arc characteristics according to their degree of vaporization. The posterior and posterior walls were both flat. The average AP values of the four methods showed funnel shape. The average values of AP were 4.38 卤1.10mm / 1.09)mm and 4.31 卤0.88mm respectively, and the average value of AP was 4.38 卤1.10mm / 1.09)mm and 4.31 卤0.88mm respectively. Methods B and D were significantly higher than those in methods A and C, and the mean coefficients of variation of the two methods were respectively: 1: 4.16 卤1.07mm, 3.68 卤0.98mm, 4.11 卤1.02)mm and 3.67 卤0.79mm, respectively. Methods A and C were significantly higher than those in methods B and D, and the coefficient of variation was the coefficient of variation (VBACDD). Conclusion the reconstruction along the auditory osseous, the anatomic mark is clear, the operation is simple, the data is stable, can be used as the reliable method to measure the size of STR.
【作者单位】：南通大学附属医院影像科;
【分类号】：R764.29

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