鼓室成形術(shù)與CT三維重建測(cè)量研究
本文選題:鼓室成形術(shù) + 聽(tīng)骨鏈重建; 參考:《復(fù)旦大學(xué)》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(tīng)骨鏈三維重建以及鐙骨前后弓斜位重建測(cè)量中耳正常解剖結(jié)構(gòu)相關(guān)數(shù)據(jù)。2、探討鼓室成形術(shù)中人工聽(tīng)骨假體的個(gè)體化精確塑形以及植入的PORP與鼓膜及鐙骨的角度關(guān)系。 材料與方法:1、成年國(guó)人無(wú)耳疾顳骨33只。均為臨床無(wú)中耳癥狀、CT檢查未見(jiàn)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(tīng)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(shí)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?fàn)钔、通過(guò)卵圓窗的角度對(duì)鐙骨前后腳進(jìn)行斜軸位重建。mimics10.01軟件行聽(tīng)骨鏈三維重建。 4、計(jì)算:運(yùn)用數(shù)學(xué)公式進(jìn)行計(jì)算,算出鐙骨前后弓平面與鼓膜平面的夾角平均值及標(biāo)準(zhǔn)差。 結(jié)果 MDCT的MPR及鐙骨前后腳斜軸位重建法可清楚顯示三塊聽(tīng)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(jié)構(gòu)之間的空間關(guān)系,計(jì)算獲得 鐙骨前后弓平面與鼓膜平面的夾角為47.4±12.0。 結(jié)論 本實(shí)驗(yàn)利用影像學(xué)方法和計(jì)算機(jī)軟件計(jì)算出正常國(guó)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(duì)聽(tīng)骨鏈重建術(shù)中人工聽(tīng)骨的個(gè)性化精確塑形、術(shù)中人工聽(tīng)骨假體的擺放角度(主要是指PORP)以及新型人工聽(tīng)骨假體的開(kāi)發(fā)研究具有一定價(jià)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(xué)位授予單位】:復(fù)旦大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2013
【分類(lèi)號(hào)】:R764.9
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