發(fā)布時間：2019-06-07 08:23

【摘要】：目的:本研究的目的是對比分析下頜神經(jīng)管在數(shù)字化曲面斷層片(PR)與錐形束CT(CBCT)上可見性的一致性,分析影響下頜神經(jīng)管在影像上可見性的非病變因素。以期能為下頜區(qū)域手術(shù)提供臨床指導(dǎo)意義。材料與方法:選取2013年12月至2014年2月期間在華西口腔醫(yī)院同時拍攝了CBCT與曲面體層片的患者92例,由兩位放射科醫(yī)師同時觀察患者的CBCT片與曲面體層片。把CBCT及曲面體層片上左右兩側(cè)的下頜神經(jīng)管從頦孔至下頜孔處平分為1、2、3、4四個區(qū)域,分為0、1、2、3四個等級分對下頜神經(jīng)管的可見性進(jìn)行評分。對下頜神經(jīng)分支、副頦孔在曲面體層片及CBCT上出現(xiàn)的概率進(jìn)行統(tǒng)計(jì)。結(jié)果:兩位醫(yī)師間的內(nèi)部一致性檢驗(yàn)符合標(biāo)準(zhǔn)。CBCT上,區(qū)域1平均得分為2.120,區(qū)域2為2.337,區(qū)域3為2.533,區(qū)域4為2.630;曲面體層片上,區(qū)域1平均得分為1.772,區(qū)域2為1.973,區(qū)域3為2.207,區(qū)域4為2.538。越往后區(qū)域可見性越高。曲面體層片上,下頜神經(jīng)分支的檢出率是4.3%,副頦孔的檢出率是0.54%;CBCT上,下頜神經(jīng)分支的檢出率是5.4%,副頦孔的檢出率是3.8%。檢驗(yàn)水準(zhǔn)為P0.05。結(jié)論:CBCT顯著提高了區(qū)域1部位下頜神經(jīng)管在圖像上的可見性。CBCT對下頜神經(jīng)管的可見性顯著高于曲面體層片。
[Abstract]:Objective: the purpose of this study was to compare and analyze the consistency of the visibility of mandibular neural tube on digital curved section (PR) and conical beam CT (CBCT), and to analyze the non-pathological factors affecting the visibility of mandibular neural tube on image. In order to provide clinical guidance for mandibular surgery. Materials and methods: from December 2013 to February 2014, 92 patients with CBCT and curved body films were taken at Huaxi Stomatological Hospital at the same time. CBCT and curved body films were observed by two radiologists at the same time. The visibility of mandibular nerve canal from mental foramen to mandibular foramen was divided into four regions, which were divided into 0, 1, 2 and 3 grades, and the visibility of mandibular nerve canal was scored by CBCT and curved body lamellae on the left and right sides of the mandibular nerve canal from the mental foramen to the mandibular foramen. The probability of mandibular nerve branches and accessory mental foramen on curved body lamellae and CBCT was counted. Results: the internal consistency test between the two physicians met the standard. On CBCT, the average score of area 1 was 2.120, area 2 was 2.337, area 3 was 2.533, area 4 was 2.630; On the surface slice, the average score of region 1 is 1.772, region 2 is 1.973, region 3 is 2.207, region 4 is 2.538. The more backward the visibility, the higher the visibility. The detection rates of mandibular nerve branches, accessory mental foramen, mandibular nerve branches and accessory mental foramen were 4.3%, 0.54%, 5.4% and 3.8%, respectively. The inspection level is P0.05. Conclusion: CBCT can significantly improve the visibility of mandibular neural tube in region 1, and the visibility of mandibular neural tube in CBCT is significantly higher than that in curved body slice.
【學(xué)位授予單位】：南昌大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：R783.6

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