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  本文關鍵詞：MRI對踝關節(jié)周圍韌帶顯示效果的研究　出處：《青島大學》2016年碩士論文　論文類型：學位論文

  更多相關文章： 踝關節(jié) 周圍韌帶 不同體位掃描 核磁共振成像

【摘要】：目的探討優(yōu)化掃描參數(shù)、掃描序列狀態(tài)下,踝關節(jié)周圍韌帶在不同體位MRI上的最佳掃描顯示層面,以尋找分辨率高、顯示清晰的掃描圖像為臨床提供更準確的診斷信息。方法首先選用6例男性踝關節(jié)標本,分別5種MR序列及3種掃描平面對踝關節(jié)進行MR掃描,以選定優(yōu)化掃描參數(shù)、掃描序列;以34例健康志愿者之踝關節(jié)為研究對象,根據(jù)前述掃描參數(shù)、掃描序列行MRI-T1W掃描,評分后對不同體位、不同層面顯示效果應用χ2檢驗做統(tǒng)計學分析。結果(1)對6例男性踝關節(jié)標本的掃描結果顯示,MRI上應用薄層掃描(2.0/1.0)、FOV(130mm)、矩陣(410×510)及利用表面柔性線圈可以提高MRI掃描分辨率;T1W(T1加權像)序列、PDW(質子密度加權)序列能較好地顯示韌帶等形態(tài)結構,而T2W(T2加權像)序列、T2WSPAIR(T2W壓脂序列)能有效顯示組織內部構造。(2)內側韌帶:距脛前韌帶(ATTL)于自然體位-冠狀面、完全跖屈-冠狀面顯示效果最佳,于3分組分別占26%、36%,顯示效果差異不顯著(P0.05);距脛前韌帶(PTTL)位于完全背屈-橫斷面時顯示圖像效果最佳,占3分組66%;脛舟韌帶(NTL)使用MRI掃描其完全跖屈-冠狀面和完全背屈-橫斷面時顯示效果最佳,差異顯著(P0.05);脛腓后韌帶(CTL)使用MRI掃描完全背屈-冠狀面和完全背屈-橫斷面能較好顯示,占3分組35%、26%,二者差異顯著(P0.05)。(3)外側韌帶:距腓前韌帶(ATFL)在自然體位-橫斷面及完全背屈-橫斷面MRI掃描可全面顯示,占3分組39%、37%,且差異不顯著(P0.05)。自然體位和完全背屈-冠狀面之間顯示效果差異不明顯(P0.05)。距腓后韌帶(PTFL)處于完全背屈-橫斷面、自然體位-冠狀面時MRI掃描圖像可完整顯示,占3分組49%、34%,兩者之間顯示差異顯著(P0.05);而不同體位矢狀面之間顯示效果差異不顯著(P0.05)。跟腓韌帶(CFL)處于自然體位-橫斷面MRI圖像的完整顯示效果最佳,占3分組47%;不同體位矢狀面之間顯示差異不顯著(P0.05)。(4)下脛腓聯(lián)合韌帶:脛腓前韌帶和脛腓后韌帶處于橫斷面時MRI掃描效果好。脛腓橫韌帶在自然體位-和完全背屈-橫斷面時MRI掃描顯示效果最佳,占3分組29%、37%,兩者差異顯著(P0.05)。骨間韌帶處于不同體位的冠狀面和橫斷面時對顯示較好。結論運用高分辨率MRI儀及表面柔性線圈,對踝關節(jié)掃描在小FOV、薄層厚、較大矩陣條件下顯示圖像分辨率高。MRI多序列、多平面掃描技術對顯示踝關節(jié)正常解剖結構及異常表現(xiàn)有很大幫助。MRI能清晰地顯示踝關節(jié)周圍韌帶解剖結構,踝關節(jié)周圍韌帶各分支有其各自最佳顯示體位及截面,從而提高臨床診斷的準確率。
[Abstract]:Objective to study the optimal scanning parameters of the ankle periarticular ligament on MRI in different postural positions under the condition of scanning sequence, and to find out the high resolution. To provide more accurate diagnostic information for clinical diagnosis by displaying clear scanning images. Methods 6 cases of male ankle specimens were examined with 5 kinds of Mr sequences and 3 kinds of scanning planes. In order to select the optimized scanning parameters, scan sequence; The ankle joint of 34 healthy volunteers was studied. According to the above scanning parameters, MRI-T1W scanning was performed on the scan sequence, and different postures were scored. 蠂 2 test was used for statistical analysis of the display effect on different levels. Results the results of 6 male ankle specimens showed that thin layer scanning was used on MRI (2.0 / 1.0). The MRI scanning resolution can be improved by using flexible coils. The PDW (proton density weighted) sequence can well display the isomorphous structure of ligaments, while the T2WT 2 weighted image sequence. T2WSPAIRN T2W) can effectively display the internal structure of the tissue. 2) the medial ligament: ATTL) is located in the natural position and coronal plane. The effect of complete plantar flexion-coronal plane was the best, accounting for 26 / 36 in 3 groups respectively, the difference was not significant (P 0.05). PTTL of anterior tibial ligament (PTTL) was best when it was located in complete dorsal flexion-cross section, accounting for 3 groups and 66%; MRI was used to scan the complete plantar flexion-coronal plane and complete dorsiflexion-transverse section, the difference was significant (P 0.05). The posterior tibiofibular ligament (CTL) could be well displayed by MRI scanning with complete dorsal flexion-coronal plane and complete dorsal flexion-transverse section, accounting for 35% and 26% of the 3 groups. There was significant difference between the two groups in the lateral ligaments: the anterior talofibular ligament (ATFLL) could be fully displayed on the natural postural transect and complete dorsiflexion-transverse MRI scans, accounting for 39% in 3 groups. 37%. There was no significant difference between the natural position and the complete dorsal flexion-coronal plane. PTFLL was located in the complete dorsal flexion-cross section. The MRI images of natural posture and coronal plane could be displayed completely, accounting for 3 groups with 49% and 34% respectively. The difference between them was significant (P 0.05). However, there was no significant difference in display effect between sagittal planes of different postures (P 0.05). The complete display of calcaneal ligament in natural position and cross section MRI images was the best, accounting for 47% of the 3 groups. There was no significant difference between sagittal planes in different postures (P0.05. 4). Inferior tibiofibular syndesmosis ligament: tibiofibular anterior ligament and tibiofibular posterior ligament in the transverse section of the MRI scan effect is good. The tibiofibular transverse ligament in the natural position-and complete dorsal flexion-cross-sectional MRI scan is the best. Accounting for 37% of the 3 subgroups. The results showed that the interosseous ligament was well displayed on the coronal and cross sections in different positions. Conclusion High resolution MRI instrument and surface flexible coil are used. The ankle joint was scanned under the condition of small FOV, thin layer thickness and large matrix to show high resolution. MRI multiple sequences. Multiplanar scanning technique is helpful to display the normal anatomical structure and abnormal appearance of ankle joint. MRI can clearly display the anatomical structure of the ligament around the ankle joint. In order to improve the accuracy of clinical diagnosis, each branch of the ligament around the ankle has its own best position and section.
【學位授予單位】：青島大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：R684;R445.2
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本文編號：1425875