本文選題：膝關(guān)節(jié) + 斷面解剖��； 參考：《第三軍醫(yī)大學(xué)》2006年碩士論文

【摘要】： 目的 觀察膝關(guān)節(jié)各結(jié)構(gòu)在不同功能位的斷面解剖結(jié)構(gòu)特點及變化規(guī)律,并與相對應(yīng)的MRI進(jìn)行對照研究,以期為膝關(guān)節(jié)疾患的動態(tài)MRI影像學(xué)診斷提供解剖學(xué)資料;建立膝關(guān)節(jié)不同功能位三維可視化數(shù)字模型,觀察膝關(guān)節(jié)各結(jié)構(gòu)在不同功能位的三維空間位置及相互毗鄰關(guān)系,為計算機(jī)輔助關(guān)節(jié)外科手術(shù)提供立體形態(tài)學(xué)基礎(chǔ)。 方法 1.選用無明顯關(guān)節(jié)病變的新鮮成年膝關(guān)節(jié)標(biāo)本15例(全伸位、屈曲45o及90o三個功能位各5例),將各功能位標(biāo)本用5%藍(lán)色明膠包埋,低溫條件下對標(biāo)本進(jìn)行層厚為0.5mm的薄層銑切。 2.選擇抽取不同功能位膝關(guān)節(jié)連續(xù)薄層斷面圖像數(shù)據(jù)各一套,進(jìn)行圖像的精確配準(zhǔn)和格式轉(zhuǎn)換,將斷面圖像與相對應(yīng)的MRI圖像對照研究。 3.對無明顯膝關(guān)節(jié)病變的成年志愿者60人,在MRI上選用SE-T1加權(quán),做層厚2.0mm無間距掃描,TR1500ms,TE15ms。測量膝關(guān)節(jié)由全伸位到屈曲位前、后交叉韌帶的長度和厚度,并觀察髕股位置關(guān)系。 4.運用圖像分割軟件,分別對不同功能位膝關(guān)節(jié)內(nèi)前交叉韌帶、后交叉韌帶、內(nèi)側(cè)半月板、外側(cè)半月板、髕骨、脛骨以及腓骨等進(jìn)行結(jié)構(gòu)數(shù)據(jù)的分割與提取,并完成不同功能位膝關(guān)節(jié)內(nèi)主要解剖結(jié)構(gòu)的三維重建。 5.應(yīng)用Amira軟件對不同功能位膝關(guān)節(jié)冰凍連續(xù)斷面的三維數(shù)據(jù)場進(jìn)行任意方位剖切,觀察并評測斷面圖像。 結(jié)果 1.獲取膝關(guān)節(jié)矢狀斷面數(shù)據(jù)集15套(全伸位、屈曲45°及屈曲90°各5套),數(shù)字化攝影分辨率分別為630萬像素和1,100萬像素,所對應(yīng)的每個24bit斷面圖像文件大小為36MB和63MB,為TIFF文件格式。組織結(jié)構(gòu)無變形、移位,可在原位對膝關(guān)節(jié)的內(nèi)部結(jié)構(gòu)進(jìn)行觀測。 2.在屈膝過程中,前交叉韌帶由緊張變松弛,長度縮短而厚度增寬。后交叉韌帶由松弛變緊張,長度變長而厚度縮窄。隨膝關(guān)節(jié)屈曲,髕骨在股骨髁上的滑行軌跡類似
[Abstract]:Objective to observe the anatomical characteristics and changes of different functional structures of knee joint, and to compare them with MRI. In order to provide anatomical data for dynamic MRI imaging diagnosis of knee joint diseases, to establish a three-dimensional visual digital model of different functional positions of knee joint, to observe the three-dimensional spatial position of each structure of knee joint in different functional positions and their relationship with each other. To provide stereomorphologic basis for computer aided arthrosurgery. Method 1. Fifteen fresh adult knee joint specimens without obvious articular lesions (5 cases in full extension position, 5 cases in flexion 45o position and 90 o position) were implanted with 5% blue gelatin. The specimens were milled at low temperature with 0.5mm thickness. 2. Select and extract one set of continuous thin section image data of knee joint in different functional position, and carry out the accurate registration and format conversion of the image. A comparative study of sectional images and corresponding MRI images. SE-T1 weighted 2.0mm scan was performed on 60 adult volunteers without obvious knee joint lesions. The length and thickness of posterior cruciate ligament were measured from total extension position to flexion position. 4. 4. The anterior cruciate ligament, posterior cruciate ligament, medial meniscus, lateral meniscus, patella, tibia and fibula were segmented and extracted with image segmentation software. Three dimensional reconstruction of the main anatomical structure of knee joint in different functional position was completed. 5. 5. Using Amira software, the 3D data field of frozen continuous section of knee joint in different functional positions was cut in any azimuth, and the sectional images were observed and evaluated. Result 1. Fifteen sets of sagittal section data sets of knee joint (5 sets of total extension, 45 擄flexion and 90 擄flexion) were obtained. The resolution of digital photography was 6.3 million pixels and 11 million pixels, respectively. The corresponding size of each 24bit section image file was 36MB and 63MB. Tissue structure without deformation, displacement, can be in situ observation of the internal structure of the knee. 2. 2. During flexion, the anterior cruciate ligament changes from tension to relaxation, shortening the length and widening the thickness. The posterior cruciate ligament changes from relaxation to tension, its length becomes longer and its thickness narrows. With the flexion of the knee joint, the patellar glide on the supracondylar of the femur is similar.
【學(xué)位授予單位】：第三軍醫(yī)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2006
【分類號】：R322

【引證文獻(xiàn)】

相關(guān)期刊論文 前1條

1 徐偉;周庭永;錢學(xué)華;劉本菊;李林宏;張慧;呂發(fā)金;;數(shù)字醫(yī)學(xué)在膝關(guān)節(jié)三維重建中的應(yīng)用[J];重慶醫(yī)科大學(xué)學(xué)報;2011年01期

相關(guān)碩士學(xué)位論文 前1條

1 徐偉;膝關(guān)節(jié)斷層影像解剖學(xué)研究及有限元建模的探索[D];重慶醫(yī)科大學(xué);2011年

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本文編號：2015675