Digital subtraction arthrography in preoperative evaluation of painful total hip arthroplasty

 Objective. The objective of this clinical study was to define the diagnostic value of plain radiography, digital subtraction arthrography and two-phase bone scintigraphy in patients with clinically loose or infected hip prostheses. Design. Digital subtraction arthrograms, scintigrams and plain radiographs of 70 consecutive patients who underwent revision hip arthroplasty were scored individually and in masked fashion for the presence or absence of features indicating loosening of femoral and/or acetabular components. The operative findings acted as the gold standard. Results. Digital subtraction arthrography was best (P<0.001) for predicting a loose acetabular component, while no significant additional predictive value was found for plain radiographs (P=0.24) and scintigraphy (P=0.27). Digital subtraction arthrography was also the most important modality for predicting a loose femoral component (P=0.001), while the plain radiograph was of significant (P=0.04) additional value and scintigraphy was of no additional value (P=0.13) on multivariate analysis. Conclusion. Digital subtraction arthrography gives the best results in the prediction of loosening of acetabular and femoral components. Plain radiographs give additional information on loosening of the femoral component, but scintigraphy offers no additional advantage.     

TCD结合TCCD与DSA对脑动脉狭窄的一致性分析及对治疗方案的指导价值

目的 探究经颅多普勒超声(transcranial Doppler sonography, TCD)结合经颅彩色多普勒超声(transcranial color-coded duplex, TCCD)与数字减影血管造影(digital subtraction angiography, DSA)对脑动脉狭窄的一致性分析及对治疗方案的指导价值。方法 选取缺血性脑血管病患者100例,均行TCD、TCCD及DSA检查,以DSA检查结果作为“金标准”,分析脑动脉狭窄程度,观察不同狭窄程度患者TCD、TCCD超声表现,采用Kappa检验分析TCD结合TCCD诊断脑动脉狭窄程度与DSA检查结果的一致性,比较不同狭窄程度患者收缩期峰流速(systolic velocity, Vs)、平均峰流速(mean velocity, Vm)、搏动指数(pulsatility index, PI),采用Spearman相关系数模型分析Vm、PI与脑动脉狭窄程度的相关性,所有患者均行药物或手术治疗,比较不同治疗方法患者入院时、治疗后6个月Vs、Vm、PI。结果 100例缺血性脑血管病患者,轻度狭窄42例,中度狭窄3...     

Willis环形态与功能对照研究

目的：从不同角度分析Willis环的形态学变异及其功能状况。方法：分别采用脑尸解标本、血管铸型标本及动态血管造影资料进行Willis环的对比分析。结果：正常成人组尸体与活体Willis环分型无差异；活体正常组与活体病理组Willis环的比较有差异；活体正常组与活体病理组PCA供血类型有差异。结论：胎儿与成人、尸体与活体、静态与动态、正常与异常的有机结合能全面评价Willis环的形态学变异及其功能状况，为临床正确诊治脑血管病提供基础依据。     

上矢状窦旁桥静脉的显微解剖与影像学观察

目的:通过对上矢状窦(SSS)旁大脑桥静脉的显微解剖、影像学观察及其对照研究,为各种纵裂间手术入路中桥静脉的保护提供基础。方法:分别对30例(60侧)上矢状窦和颈内静脉内灌注蓝色乳胶的成人头颅湿标本、40侧DSA静脉相和16侧CTV进行显微解剖和影像学观察。结果:上矢状窦前部和后部分别有一缺乏桥静脉注入段,显微解剖、DSA和CTV观察上矢状窦旁桥静脉的数量分别为11.2支、8.9支和7.0支,DSA和CTV观察发现桥静脉注入上矢状窦处常显示不清。结论:熟悉和比较上矢状窦旁桥静脉的解剖学和影像学特征有利于各种纵裂间手术入路和手术过程中桥静脉的保护。     

Increased central adiposity is associated with pro-inflammatory immunoglobulin G N-glycans

Background

Increased body fat may be associated with an increased risk of developing an underlying pro-inflammatory state, thus leading to greater risk of developing certain chronic conditions. Immunoglobulin G has the ability to exert both anti- and pro-inflammatory effects, and the N-glycosylation of the fragment crystallisable portion is involved in mediating this process. Body mass index, a rudimentary yet gold standard indication for body fat, has been shown to be associated with agalactosylated immunoglobulin G N-glycans.

Digital subtraction angiography (DSA): New perspectives in angiography

Summary Digital subtraction angiography (DSA) has strongly influenced angiographic procedures. Because it is less invasive it has increased the total number of angiographies in all places where it was introduced. The paper gives an introduction to the procedure explaining the roles of digital and subtraction in DSA. It is written from a technical point of view. The examples are taken from and with the DVI system.     

可调节式内膜剥离器用于亚急性下肢动脉栓塞治疗32例分析

正多数下肢动脉栓塞病人在急性期内(发病6～8 h以内)行手术治疗可取得较好的治疗效果,但部分病人可能因医疗条件或个人原因而选择保守治疗(如仅使用抗凝药物等),下肢动脉部分开放或仅侧支开放,将疾病由急性期拖入了亚急性期,此时的血栓机化,并且与血管内膜粘连紧密不易分开。笔者团队自制可调节式内膜剥离器用于取出亚急性下肢动脉栓塞病人的陈旧性机化血栓。现报告如下。     

DSA引导下腰交感神经阻滞治疗妇科肿瘤术后下肢淋巴水肿

目的观察DSA引导下腰交感神经阻滞治疗妇科肿瘤术后下肢淋巴水肿的有效性及安全性。方法回顾性分析20例妇科肿瘤术后下肢淋巴水肿患者,均接受DSA引导下腰交感神经阻滞治疗(均治疗2次)。分别于阻滞前、首次阻滞后第1天及第2次阻滞后第1、7天测量患侧腿围,记录患侧腿围缩小值。采用Inbody720多频生物电阻人体成分分析仪检测阻滞前及第2次阻滞后1周时的组织水肿程度;观察症状改善及功能恢复情况。结果 20例均顺利完成阻滞。1例术后出现短暂下肢无力,余无不良反应。首次阻滞后第1天及第2次阻滞后第1、7天患侧下肢各测量点腿围均不同程度缩小,且各测量点第2次阻滞术后第1、7天腿围缩小值均高于第1次术后第1天(P均0.01)。第2次阻滞后1周组织水肿程度较术前降低(P0.01),髋关节活动度较术前增加(P0.01),患侧下肢肿胀感、紧绷感、疼痛感、麻木感均消失。结论 DSA引导下腰交感神经阻滞治疗妇科肿瘤术后下肢淋巴水肿有效且安全。     

基于PC微机的脉冲曝光式数字减影系统的研究

本文简要介绍一种基于PC微机的实时数字减影系统，文中对系统的组成、工作原理、曝光脉冲的产生及其对X线机的控制作了较详细的论述，同时对系统的软件功能做一简要介绍。该系统已用于国内几十家医院对西门子公司早期生产的X线机的升级改造，取得了较好的社会效益和经济效益。