目的:建立一种基于CT影像特征的先天性寰枢椎脱位分型方法,探讨其对寰枢椎手术方式选择的指导价值。方法:2020年1月~2022年12月,共纳入61例先天性寰枢椎脱位患者,其中男性26例、女性35例;年龄32±12岁(6~61岁)。对61例患者的术前CT...目的:建立一种基于CT影像特征的先天性寰枢椎脱位分型方法,探讨其对寰枢椎手术方式选择的指导价值。方法:2020年1月~2022年12月,共纳入61例先天性寰枢椎脱位患者,其中男性26例、女性35例;年龄32±12岁(6~61岁)。对61例患者的术前CT影像学特征进行分析,并根据其寰枢侧块关节及寰齿关节的畸形程度分为三种类型:A型(23例,侧块关节轻度畸形,不伴寰齿关节畸形);B型(20例,侧块关节中度畸形,不伴寰齿关节畸形);C型(18例,侧块关节重度畸形或伴寰齿关节畸形)。根据不同分型采用不同手术策略:A型或B型患者先行全麻下寰枢椎后路器械撑开复位内固定术,对复位效果不佳的患者增加寰枢椎后路侧块关节松解术;C型患者行经口咽前路寰枢椎截骨改造、松解复位内固定手术(transoral osteotomy,releasing,reduction and fixation with plate,TORP)。随访时间为10~18个月。记录并比较各分型患者的手术时间及出血量;术后1周复查颈椎CT及MRI,观察并测量寰枢椎脱位复位指标,计算寰枢椎脱位的整体复位率;术后3个月采用日本骨科协会(Japanese Orthopaedic Association,JOA)评分评价术后脊髓功能恢复情况,通过CT检查评价术后骨融合情况。结果:共实施全麻牵引下寰枢椎后路器械撑开复位内固定术22例(A型20例,B型2例),全麻牵引下寰枢椎后路侧块关节松解并后路器械撑开复位内固定术21例(A型3例,B型18例),实施TORP术18例(均C型)。61例患者术后1周的CT及MRI显示寰枢椎复位良好,脊髓压迫解除。术后所有患者的脊髓功能均有不同程度的改善,A型JOA评分由术前9.8±2.7分改善为术后3个月的13.9±2.8分(P<0.05);B型JOA评分由术前9.5±2.4分改善为术后3个月的13.7±3.1分(P<0.05);C型JOA评分由术前9.1±2.9分改善为术后3个月的13.3±2.5分(P<0.05)。A型患者术前及术后1周寰齿间隙(atlas-dens interval,ADI)为5.8±2.5mm、0.8±0.4mm,齿状突顶点距Chamberlain线的垂直距离(vertical distance from dens to Chamberlain line,VDI)为5.7±3.6mm、1.0±0.8mm,脑干延髓角(cervical medullary angle,CMA)为138.4°±12.4°、156.5°±13.3°,斜坡枢椎角(clivus axis angle,CAA)为131.6°±11.5°、149.5°±14.4°;B型术前及术后1周ADI为6.9±3.8mm、1.1±0.9mm,VDI为5.9±4.3mm、1.1±1.0mm,CMA为135.1°±15.2°、157.3°±13.2°,CAA为128.4°±13.5°、152.5°±13.4°;C型术前及术后1周ADI为7.2±3.9mm、1.2±1.5mm,VDI为8.8±5.1mm、1.5±1.8mm,CMA为132.7°±10.9°、158.2°±15.3°,CAA为124.5°±17.8°、153.8°±11.2°;各分型术后ADI、VDI、CMA和CAA值均得到显著改善(P<0.05)。A型整体复位率84.30%,B型整体复位率82.68%,C型整体复位率81.53%,各组之间复位率比较差异无统计学意义(P>0.05)。除1例B型患者因骨融合不佳,发生螺钉松动,后实施经口咽前路翻修手术外,其余60例患者均在术后10~12个月得到了稳定的骨性融合。结论:本研究建立的关于先天性寰枢椎脱位的CT影像学分型方法,可为寰枢椎手术方式选择提出精准、可靠的指导意见。展开更多
Rammed earth wall technique is one of the local widespread traditional construction methods, and it has superior physical property and ecological protection characteristic. When contemporary raw-soil building is repla...Rammed earth wall technique is one of the local widespread traditional construction methods, and it has superior physical property and ecological protection characteristic. When contemporary raw-soil building is replaced by industry building, the hometown building culture is perishing gradually. In order to inherit and develop the Hanzhong local building, rammed earth wall in Taiyangling and Cangshe hometown is investigated, and the characteristics and construction techniques of the local rammed earth wall are concluded. According to the construction problems, the improvement suggestions are put forward, which establishes the foundation to investigate rammed earth wall further, and guide Rural House construction.展开更多
[Objective] The aim was to improve part of auto-control system of aquatic seedling breeding and to lay foundation for highly-efficient and stable use of the sys- tem. [Method] The executive and drive modules of the au...[Objective] The aim was to improve part of auto-control system of aquatic seedling breeding and to lay foundation for highly-efficient and stable use of the sys- tem. [Method] The executive and drive modules of the auto-control system were im- proved, after which real-time monitor, data display and alarm modules were tested on time. [Result] In the test, for the improved system, stability and sensitivity were enhanced; different components matched better; transmitting electric resistanc6 was reduced. [Conclusion] The research provides references for auto-control of water temperature and dissolved oxygen, and faults clearing in aquatic seedling breeding.展开更多
文摘目的:建立一种基于CT影像特征的先天性寰枢椎脱位分型方法,探讨其对寰枢椎手术方式选择的指导价值。方法:2020年1月~2022年12月,共纳入61例先天性寰枢椎脱位患者,其中男性26例、女性35例;年龄32±12岁(6~61岁)。对61例患者的术前CT影像学特征进行分析,并根据其寰枢侧块关节及寰齿关节的畸形程度分为三种类型:A型(23例,侧块关节轻度畸形,不伴寰齿关节畸形);B型(20例,侧块关节中度畸形,不伴寰齿关节畸形);C型(18例,侧块关节重度畸形或伴寰齿关节畸形)。根据不同分型采用不同手术策略:A型或B型患者先行全麻下寰枢椎后路器械撑开复位内固定术,对复位效果不佳的患者增加寰枢椎后路侧块关节松解术;C型患者行经口咽前路寰枢椎截骨改造、松解复位内固定手术(transoral osteotomy,releasing,reduction and fixation with plate,TORP)。随访时间为10~18个月。记录并比较各分型患者的手术时间及出血量;术后1周复查颈椎CT及MRI,观察并测量寰枢椎脱位复位指标,计算寰枢椎脱位的整体复位率;术后3个月采用日本骨科协会(Japanese Orthopaedic Association,JOA)评分评价术后脊髓功能恢复情况,通过CT检查评价术后骨融合情况。结果:共实施全麻牵引下寰枢椎后路器械撑开复位内固定术22例(A型20例,B型2例),全麻牵引下寰枢椎后路侧块关节松解并后路器械撑开复位内固定术21例(A型3例,B型18例),实施TORP术18例(均C型)。61例患者术后1周的CT及MRI显示寰枢椎复位良好,脊髓压迫解除。术后所有患者的脊髓功能均有不同程度的改善,A型JOA评分由术前9.8±2.7分改善为术后3个月的13.9±2.8分(P<0.05);B型JOA评分由术前9.5±2.4分改善为术后3个月的13.7±3.1分(P<0.05);C型JOA评分由术前9.1±2.9分改善为术后3个月的13.3±2.5分(P<0.05)。A型患者术前及术后1周寰齿间隙(atlas-dens interval,ADI)为5.8±2.5mm、0.8±0.4mm,齿状突顶点距Chamberlain线的垂直距离(vertical distance from dens to Chamberlain line,VDI)为5.7±3.6mm、1.0±0.8mm,脑干延髓角(cervical medullary angle,CMA)为138.4°±12.4°、156.5°±13.3°,斜坡枢椎角(clivus axis angle,CAA)为131.6°±11.5°、149.5°±14.4°;B型术前及术后1周ADI为6.9±3.8mm、1.1±0.9mm,VDI为5.9±4.3mm、1.1±1.0mm,CMA为135.1°±15.2°、157.3°±13.2°,CAA为128.4°±13.5°、152.5°±13.4°;C型术前及术后1周ADI为7.2±3.9mm、1.2±1.5mm,VDI为8.8±5.1mm、1.5±1.8mm,CMA为132.7°±10.9°、158.2°±15.3°,CAA为124.5°±17.8°、153.8°±11.2°;各分型术后ADI、VDI、CMA和CAA值均得到显著改善(P<0.05)。A型整体复位率84.30%,B型整体复位率82.68%,C型整体复位率81.53%,各组之间复位率比较差异无统计学意义(P>0.05)。除1例B型患者因骨融合不佳,发生螺钉松动,后实施经口咽前路翻修手术外,其余60例患者均在术后10~12个月得到了稳定的骨性融合。结论:本研究建立的关于先天性寰枢椎脱位的CT影像学分型方法,可为寰枢椎手术方式选择提出精准、可靠的指导意见。
基金Supported by Fund for Scientific Research of Shaanxi University of Technology(SLG0811)~~
文摘Rammed earth wall technique is one of the local widespread traditional construction methods, and it has superior physical property and ecological protection characteristic. When contemporary raw-soil building is replaced by industry building, the hometown building culture is perishing gradually. In order to inherit and develop the Hanzhong local building, rammed earth wall in Taiyangling and Cangshe hometown is investigated, and the characteristics and construction techniques of the local rammed earth wall are concluded. According to the construction problems, the improvement suggestions are put forward, which establishes the foundation to investigate rammed earth wall further, and guide Rural House construction.
文摘[Objective] The aim was to improve part of auto-control system of aquatic seedling breeding and to lay foundation for highly-efficient and stable use of the sys- tem. [Method] The executive and drive modules of the auto-control system were im- proved, after which real-time monitor, data display and alarm modules were tested on time. [Result] In the test, for the improved system, stability and sensitivity were enhanced; different components matched better; transmitting electric resistanc6 was reduced. [Conclusion] The research provides references for auto-control of water temperature and dissolved oxygen, and faults clearing in aquatic seedling breeding.
