發(fā)布時間：2018-04-13 05:14

  本文選題：多層螺旋CT + 多平面重組　； 參考：《青島大學》2017年碩士論文

【摘要】：目的:運用多層螺旋CT(MSCT)掃描得出的原始數(shù)據(jù),進行多平面重組(MPR)后處理。在重組矢狀面圖像上,對前庭導水管中段寬度值進行測量,并建立95%的醫(yī)學參考值范圍,對其規(guī)律進行探討,探討矢狀位做為診斷標準的可行性。方法:搜集研究正常觀察對象80例,男38例,女42例,年齡9月至72歲,均無聽力異常現(xiàn)象。對顳骨進行MSCT掃描,利用MSCT各向同性的掃描技術(shù),將所得原始圖像行MPR后處理,重組兩側(cè)前庭導水管矢狀位圖像,計算導水管后肢全程顯示率。測量前庭導水管在重組矢狀位圖像上中段的寬度,按照左右兩側(cè)及男女性別分組,記錄測量數(shù)據(jù)。對左右側(cè)及男女分組數(shù)據(jù)進行統(tǒng)計學分析,觀察有無統(tǒng)計學意義,并建立95%的醫(yī)學參考值范圍。另外,搜集16例臨床表現(xiàn)為聽力異常,顳骨MSCT掃描后,橫軸位測量初步診斷為LVAS患者,利用各向同性技術(shù),將所得圖像行MPR后處理,重組兩側(cè)前庭導水管矢狀位圖像,記錄導水管中段寬度數(shù)值,與正常觀察對象進行統(tǒng)計學分析。結(jié)果:1、MPR后處理重組出的矢狀位圖像,對前庭導水管的顯示率高于直接掃描獲得的橫軸位圖像顯示率。2、正常前庭導水管重組矢狀位圖像在左右兩側(cè)及男女性別間無差異統(tǒng)計學意義。3、正常組導水管中段寬度值在重組矢狀位方向上95%的醫(yī)學參考值范圍:左側(cè)0.49-0.98mm;右側(cè)0.52-1.03mm。4、16例臨床診斷為聽力異常患者,橫軸位測量初步診斷為LVAS患者,重組矢狀位中段寬度值范圍1.2mm至3.9mm,與正常組比較有統(tǒng)計學差異。結(jié)論:1.前庭導水管后肢在重組矢狀位上的顯示較直接軸位更符合解剖學形態(tài),更精確反映前庭導水管的大小,并且制訂出前庭導水管中段寬度值95%的正常值范圍。2.在重組矢狀位圖像上,前庭導水管中段寬度值大于等于1.1mm,診斷為前庭導水管擴大。同時伴有臨床聽力異常及相應病史,診斷為大前庭導水管綜合征。
[Abstract]:Aim: to use the original data obtained by multilayer spiral CT MSCT (MSCT) scan to carry out multiplanar recombination MPRs post-processing.The width of the vestibular aqueduct was measured on the reconstructed sagittal image and the 95% range of medical reference value was established. The regularity was discussed and the feasibility of using sagittal position as diagnostic criterion was discussed.Methods: 80 normal subjects, 38 males and 42 females, aged from 9 months to 72 years, had no abnormal hearing.The temporal bone was scanned by MSCT, and the original image was processed with MPR by using MSCT isotropic scanning technique. The sagittal image of the vestibular aqueduct was reconstructed and the full display rate of the posterior limb of the aqueduct was calculated.The width of vestibular aqueduct in the middle of the reconstructed sagittal image was measured.The data of left and right sides and male and female groups were analyzed statistically, and the 95% medical reference value range was established.In addition, 16 cases with abnormal hearing were collected. After MSCT scan of temporal bone, transaxial measurement was used to diagnose LVAS. Using isotropic technique, the images were processed by MPR, and the sagittal images of vestibular aqueduct were reconstructed.The width of the middle section of the aqueduct was recorded and analyzed statistically with the normal subjects.Results the reconstructed sagittal image was processed by 1: 1 MPR.The display rate of vestibular aqueduct was higher than that of axial image. The sagittal image of normal vestibular aqueduct was not significantly different between the right and left sides and between male and female.The range of medical reference values of 95% in the sagittal direction of the recombination was 0.49-0.98mm on the left side and 0.52-1.03mm .4mm on the right side in 16 clinically diagnosed patients with abnormal hearing.The width of the median sagittal segment of the reconstituted sagittal position was 1.2mm to 3.9 mm, which was significantly different from that of the normal group.Conclusion 1.The posterior limb of vestibular aqueduct was more conformed to anatomical shape and more accurately reflected the size of vestibular aqueduct than that of direct axis, and the normal value range of 95% width of vestibular aqueduct was worked out.On the reconstructed sagittal image, the width of the vestibular aqueduct was greater than 1.1 mm, which was diagnosed as vestibular aqueduct enlargement.At the same time, accompanied by clinical hearing abnormalities and the corresponding history, the diagnosis of large vestibular aqueduct syndrome.
【學位授予單位】：青島大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：R764;R816.96

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本文編號：1743074