中华耳科学杂志
中華耳科學雜誌
중화이과학잡지
CHINESE JOURNAL OF OTOLOGY
2014年
2期
300-303
,共4页
刘婷婷%曹和涛%黄虹%苏海%于芹
劉婷婷%曹和濤%黃虹%囌海%于芹
류정정%조화도%황홍%소해%우근
咽鼓管上隐窝%多层螺旋CT%多平面重组%测量%对比研究
嚥鼓管上隱窩%多層螺鏇CT%多平麵重組%測量%對比研究
인고관상은와%다층라선CT%다평면중조%측량%대비연구
Supertubualrecess,Tomograph%X-raycomputed%Multi-planarreconstruction%Measurement%Comparativestudy
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：A＞C＞B＞D；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：B＞A＞C＞D。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。
目的：觀察嚥鼓管上隱窩（STR）形態特徵，探討MSCT測量其大小的閤理方法。方法兩位經驗豐富的醫生對20例40側正常顳骨MSCT容積數據進行後處理，分彆沿聽眥線（A法）、基線30°夾角線（B法）、水平線（C法）及聽小骨（D法）重組Collins層麵，沿錘砧關節長軸平行及垂直方嚮實時重組觀察STR週壁形態，採用VR觀察其大體形態特徵，測量其最大深度（AP）和最大寬度（T）。取2位醫師測量平均值作為統計數據進行分析，計算其變異繫數，測量結果採用配對t檢驗。結果STR前內、前外及前頂壁依據其氣化程度呈不同程度弧形特徵，後內和後外壁均較平直，大體形態呈現漏鬥狀。A~D四種方法AP均值依次為：（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顯著大于方法A和C，變異繫數：A＞C＞B＞D；T均值分彆為：（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顯著大于方法B和D，變異繫數：B＞A＞C＞D。結論沿聽小骨重組，解剖標誌明確，操作簡單，數據穩定，可作為測量STR大小可靠方法。
목적：관찰인고관상은와（STR）형태특정，탐토MSCT측량기대소적합리방법。방법량위경험봉부적의생대20례40측정상섭골MSCT용적수거진행후처리，분별연은자선（A법）、기선30°협각선（B법）、수평선（C법）급은소골（D법）중조Collins층면，연추침관절장축평행급수직방향실시중조관찰STR주벽형태，채용VR관찰기대체형태특정，측량기최대심도（AP）화최대관도（T）。취2위의사측량평균치작위통계수거진행분석，계산기변이계수，측량결과채용배대t검험。결과STR전내、전외급전정벽의거기기화정도정불동정도호형특정，후내화후외벽균교평직，대체형태정현루두상。A~D사충방법AP균치의차위：（4.07±1.18）mm、（4.38±1.10）mm、（4.02±1.09）mm화（4.31±0.88）mm，기중，방법B화D현저대우방법A화C，변이계수：A＞C＞B＞D；T균치분별위：（4.16±1.07）mm、（3.68±0.98）mm、（4.11±1.02）mm화（3.67±0.79）mm，기중，방법A화C현저대우방법B화D，변이계수：B＞A＞C＞D。결론연은소골중조，해부표지명학，조작간단，수거은정，가작위측량STR대소가고방법。
Objective To study morphological characteristics of supertubual recess (STR) and develop an accurate meth-od to measure its sizes on MSCT. Methods MSCT volume data of 40 non-pathologic temporal bones from 20 patients were post-processed by two experienced radiologists. Collins planar was reconstructed along the OML(method A), 30° to the base-line (method B), along the horizontal line (method C) or the otosteon planes (method D). The surrounding bony walls of STR were reconstructed and examined in real time along planes parallel or perpendicular to the incudomalleolar joint long axes. General morphological characteristics of STR was examined using VR. The deepest anterior-to-posterior diameter (AP) and longest transverse diameter (T) were measured. Average values were analyzed and their coefficient of variation(CV)were calcu-lated, Comparison among the four methods were done using paired t test. Results The antero-medial, antero-lateral and an-tero-superior walls of STR presented with arcs of various degrees corresponding to the degree of mastoid pneumatization. Both the posteromedial and posterolateral walls were relatively flat, in a generally funnel-shape. Mean AP diameter was 4.07±1.18 mm, 4.38±1.10 mm, 4.02±1.09 mm and 4.31±0.88 mm for Methods A, B, C and D, respectively. The AP diameters from Meth-ods B and D were greater than those from A and C. CV analysis among methods showed: A>C>B>D. Mean T was 4.16 ± 1.07mm, 3.68±0.98 mm, 4.11±1.02 mm and 3.67±0.79 mm for Methods A, B, C and D, respectively, with those from Methods A and C greater than those from B and D. Analysis of CV for transverse diameter also showed:B>A>C>D. Conclusion Recon-struction along otosteon planes can be used as a reliable method to measure the size of STR, providing clear anatomical land-marks, simple operation and reliable data.
