目的 建立常见先天性心脏病(先心病)介入手术的单中心辐射剂量值,以加强国内先心病介入医师的术中辐射防护意识.方法 回顾性收集复旦大学附属儿科医院2016年1月至2018年10月采用低辐射剂量影像策略下进行的先心病介入手术的辐射剂量值,包括透视时间、空气比释动能和剂量-面积乘积(DAP).纳入先心病介入手术种类包括动脉导管未闭封堵术、房间隔缺损封堵术、室间隔缺损封堵术、肺动脉瓣狭窄成形术、主动脉缩窄球囊血管成形术和复杂体-肺动脉侧支堵闭术.结果 纳入496例先心病患儿介入手术中,动脉导管未闭封堵术、房间隔缺损封堵术、室间隔缺损封堵术、肺动脉瓣狭窄成形术、主动脉缩窄球囊血管成形术和复杂体-肺动脉侧支堵闭术分别为178例、77例、96例、68例、36例和41例,介入手术的辐射剂量DAP/kg中位数分别为7.25μGy·m2/kg、8.99μGy·m2/kg、24.61μGy·m2/kg、12.61μGy·m2/kg、11.68μGy·m2/kg和30.74μGy·m2/kg.结论 本研究建立了低辐射剂量影像策略下六类常见先心病患儿介入手术的单中心辐射剂量值,可用于儿童先心病介入手术辐射防护质量的初步评价.

>随着定量PCR在实验诊断领域的广泛应用,许多PCR实验室同时使用两台以上不同的荧光定量PCR仪参与日常检验报告的发送。但是,由于不同的检测系统间存在着差异,导致在结果判读时产生疑问:不同仪器系统检测的结果之间究竟存在多大的差异?是否在可接受范围之内?是否需要对结果进行修正?然而,目前国内在评估定量PCR检测的

OBJECTIVE:To estimate the effects of the treatment of 360 degrees fixation of lumbar spine.METHODS:Twenty-five cases were operated to 360 degrees fixation of lumbar spine from May 2002 to May 2005. There were 11 male and 14 female, the age ranging from 45 to 67 years, mean 56, including 16 cases of spondylolysis, 7 cases of lumbar spinal instability and 2 cases of degenerative disc undergone with anterior laparoscopic lumbar interbody fusion with syncage and autograft and posterior decompression with facet fixation. The chief complains were low back pain and radiating to lag. Fourteen cases were fused at L(4), 5 and 11 cases at L(5)-S(1). The Oswestry Disability Index (ODI) were recorded to evaluate the function at pro-operation, the second week, the third, sixth and twelfth month post-operation. The X-ray was taken to observe the fusion and the sinking cage.RESULTS:The time intro-operation was from 110 to 180 minutes, mean 120 minutes. There was one complication in 1 case by the main vein injury. All of the 25 cases were followed-up post-operation from 12 to 35 months, mean 22.3 months. The ODI was found prominent difference compared with pro-operation in 2 weeks, 3, 6 and 12 months post-operation (P < 0.05). Twenty-five cases were fused in the third month. Two cases sank 1 mm in the third month images but solid fusion. No cage displacement was found. No retrograde ejaculation happened.CONCLUSIONS:360 degrees fixation of lumbar spine adapts to deal with lumbar instability, degenerative disc disease and I, II degree spondylolysis. It shows less bleeding and injury, but during exposure and traction the main vessels should be very careful.

Aim: To analysis the effectiveness and related factors of treating neurological deficits thoracolumbar fracture patients after sugery.Methods:Modified Frankel Grading System was used to asses the neurolngical deficits of patients and the prognosis after operation. Results: Afteroperation all the patients' Frankel grade improved 1 or 2. The lower the fracture level, the better the improvement. The obvious effectiveness by anterior decompression operation was 32%, which was higher than by postenrior. According to the result of multivariable analysis, the probability of getting 2 Frankel grades improvement after surgery was statistical significantly higher in lumbar spinal fracture than in thoracispinal fracture (OR =21, P < 0.01 ), and statistical significantly higher by anterior operation than by posterior operation ( OR = 3.0, P < 0.05). Conclusion: The neurological deficits would improve after decompression in thoracolumbar fracture patients. The fracture level and the kind of operation are the main factors to affect the improvement. The improvement is obviously better in lumbar spinal fracture and anterior operation.