鼓室成形術與CT三維重建測量研究
發(fā)布時間:2018-05-30 20:06
本文選題:鼓室成形術 + 聽骨鏈重建; 參考:《復旦大學》2013年碩士論文
【摘要】:目的:1、利用多排螺旋CT多平面重建、mimics聽骨鏈三維重建以及鐙骨前后弓斜位重建測量中耳正常解剖結構相關數(shù)據(jù)。2、探討鼓室成形術中人工聽骨假體的個體化精確塑形以及植入的PORP與鼓膜及鐙骨的角度關系。 材料與方法:1、成年國人無耳疾顳骨33只。均為臨床無中耳癥狀、CT檢查未見中耳異常。 2、所有病例均行顳骨16排螺旋CT掃描檢查;颊哐雠P位,平行于聽眥線自外耳道下緣至巖骨上緣做軸位CT掃描,層厚0.75mmm,螺距1.0,電壓120KV,電流187mAs,掃描時間約4.5-5.5s,視野:107mm。常規(guī)顳骨冠、軸位重建并攝片,將數(shù)據(jù)重建圖像傳至工作站。 3、后處理:所有33耳均行MDCT多平面重建,以骨算法平行于砧骨豆狀突、通過卵圓窗的角度對鐙骨前后腳進行斜軸位重建。mimics10.01軟件行聽骨鏈三維重建。 4、計算:運用數(shù)學公式進行計算,算出鐙骨前后弓平面與鼓膜平面的夾角平均值及標準差。 結果 MDCT的MPR及鐙骨前后腳斜軸位重建法可清楚顯示三塊聽小骨的位置、形態(tài)。 mimics10.01軟件重建的三維圖像可立體顯示各結構之間的空間關系,計算獲得 鐙骨前后弓平面與鼓膜平面的夾角為47.4±12.0。 結論 本實驗利用影像學方法和計算機軟件計算出正常國人顳骨中鼓膜平面與鐙骨前后弓平面所成夾角為47.4±12.0。。對聽骨鏈重建術中人工聽骨的個性化精確塑形、術中人工聽骨假體的擺放角度(主要是指PORP)以及新型人工聽骨假體的開發(fā)研究具有一定價值。
[Abstract]:Objective to investigate the individualized and accurate reconstruction of artificial ossicular prosthesis in tympanoplasty by using multislice spiral CT multiplanar reconstruction of mimics auditory chain 3D reconstruction and reconstruction of anterior and posterior stapes arch oblique position to measure the normal anatomical structure of middle ear. The shape and the angle of the implanted PORP to the tympanic membrane and stapes. Materials and methods: 1, 33 adult Chinese temporal bone without ear disease. All of them had no symptoms of middle ear and no abnormality of middle ear on CT examination. 2. All patients underwent 16-slice spiral CT scan of temporal bone. The patient was supine and performed axial CT scan parallel to the line of canthus from the lower edge of the external auditory canal to the superior edge of the petrosal bone. The slice thickness was 0.75 mm, pitch 1.0, voltage 120kV, current 187mAs. the scanning time was about 4.5-5.5 s, and the visual field was: 107mm. Routine temporal bone crown, axial reconstruction and radiography, data reconstruction image to the workstation. 3, postprocessing: all 33 ears underwent MDCT multiplanar reconstruction, the bone algorithm was parallel to the lenticular process of the incus, and the oblique axis reconstruction of the anterior and posterior stapes was performed by the angle of the oval window. The auditory chain was reconstructed by the software .mimics10.01. 4, calculation: the average angle and standard deviation between the anterior and posterior arch plane and tympanic membrane plane of stapes were calculated by mathematical formula. Result MDCT's MPR and anterior and posterior stapes oblique axis reconstruction can clearly display the position and shape of the three auditory ossicles. The 3D image reconstructed by mimics10.01 software can show the spatial relationship between the structures stereoscopically. The angle between the anterior and posterior arch plane of stapes and the tympanic plane was 47.4 鹵12.0. Conclusion The angle between the tympanic membrane plane and the anterior and posterior arch plane of the stapes was calculated by using the imaging method and computer software in the normal Chinese temporal bone. The angle between the tympanic membrane plane and the anterior arch plane of the stapes was 47.4 鹵12.0.. It is of value to the development of the artificial ossicular prosthesis in the reconstruction of ossicular chain, the angle of placement of artificial ossicular prosthesis (mainly referred to as PORP) and the development of new artificial ossicular prosthesis.
【學位授予單位】:復旦大學
【學位級別】:碩士
【學位授予年份】:2013
【分類號】:R764.9
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