量子迭代重建提高腹部光子计数探测器CT影像质量

<正>摘要 临床光子计数探测器（PCD）CT引入了一种迭代重建（IR）算法。目的 在体膜和接受腹部门静脉PCD CT的病人中,研究虚拟单能影像和多色影像（T3D）的影像质量及量子     

房水免疫球蛋白测定50例

正常房水中IgG、IgA、IgM含量测定虽已报道,但多采自尸眼。在国内杨以嘉等以老年性白内障病人房水作为正常房水检测仅40例。我院对50例房水检测免疫球蛋白含量,以累积更多资料,现介绍如下。     

椎管内肿瘤175例疗效观察

报告经手术及随访观察的175例椎管内肿瘤,其中全切除143例,部份切除22例,椎板切除减压加活检10例。恢复劳动96例,能自理生活31例。认为对于任何性质的椎管内肿瘤早期确诊,及时手术和彻底切除是获得较好预后的措施。恶性肿瘤若病变局限,应争取切除肿瘤,术后辅以放射治疗及化学药物治疗,髓内肿瘤一期切除效果亦较为理想。     

显微手术切除第三脑室后部肿瘤4例报告

我院自1977年10月以来。采用显微外科技术对4例第三脑室后部肿瘤直接切除获得成功,现报告如下:例1 女、38岁,间隙性发作性头痛4年,视力模糊7个月,伴有嗜睡现象3个月入院。检查:神志清楚,视力右0.9、左1.0,视神经乳头水肿,双侧瞳孔等圆,对光反射存在,眼球同向上视障碍,轻度震     

抗青光眼手术远期疗效观察

本文对68例82只原发性青光眼进行各种抗青光眼手术远期疗效分析,提示:1.手术治疗有肯定的疗效。2.巩膜下巩膜咬切术是一种较理想的手术。3.晶体混浊是抗青光眼手术的主要并发症。4.对已出现视乳头病理凹陷的病例,为保护视功能,要求术后使眼压控制到更低的水平。     

XG200毫安医用诊断X线机附加防护装置的α值

本文运用简单平面的放射性防护最优化的方法,剂量率用加权平均方法,通过实地测试求得XG200毫安医用诊断X线机附加防护装置的α值为38200元/人·sv。     

小儿小肠脂肪瘤致不全肠梗阻1例

<正>小儿小肠脂肪瘤是一种临床少见的小肠良性肿瘤,通常无特异性临床表现,是源自小肠黏膜下或浆膜下脂肪组织的良性肿瘤,多发生于回肠,呈息肉样、结节状或浸润性生长。我们近期收治1例小肠脂肪瘤致不全肠梗阻,现报道如下:患儿,男,5岁,因"间断呕吐1年余"收住院。患儿入院前1年反复出现呕吐,呕吐物为胃内容物,常自行缓解,间断     

中国北方五市儿童功能性便秘流行病学特征现况调查

Objective Functional constipation (FC) is a common complaint in childhood but the prevalence still remains unclear, the aim of this study was to explore the prevalence of FC in childhood in the northern parts of China. Methods A screening program on FC in childhood was carried out in 5 northern cities (Beijing, Tianjin, Shenyang, Changchun, Harbin) of China according to symptoms under the Rome Ⅲ criteria. Random clustered sampling of the inhabitants was carried out under stratification of cities, geographic zones, schools or nurseries.Sample size of each area was in proportion to the population of the area. The range of age was 4-14. All subjects under study were requested to fill in a questionnaire distributed by the teachers. The screening program was carried out immediately after a section survey was completed. All together, 20 000 questionnaires were distributed with 19 638 retrievals. According to the result of the screening, a small number of patients who met the criteria were further selected to undergo a detailed clinical examination in the hospital including laboratory examination, colonic transit time, defecography or/and barium enema, electromyologram and anorectal manometry to exclude organic disease of the colon. Simultaneously, a detailed questionnaire was requested to fill under the assistance of trained doctors or medical students.Prevalence of FC of the population was adjusted by the rate of correct diagnosis from the detailed study. Results The adjusted point prevalence of FC in 5 northern cities of China according to Rome Ⅲ criteria was 4.73% with higher prevalence rate of FC seen in the Beijing area (5.02%) than in other cities (4.82%, 4.76%, 4.27%, 4.40%, with P＜0.001 ). Male to female ratio was 1.26:1 with majority of the FC fell in the 4-6 year olds (5.76%). Conclusion FC appeared a common disorder in childhood in the northern parts of China which called for greater attention. Higher prevalence was noted in the age groups of 4-6.     

野鸦椿水提物对大鼠慢性肝纤维化的影响

目的研究野鸦椿水提物对慢性肝纤维化的作用及机制。方法将50只大鼠随机分为正常组、模型组、秋水仙碱组及野鸦椿高和低剂量组,除正常组外灌胃给予CCl4,2次/周,共8周,造成慢性肝纤维化模型。第4周开始秋水仙碱组给秋水仙碱0.1mg/kg,野鸦椿高、低剂量组分别给野鸦椿水提物1mL/kg和0.2mL/kg,连续5周,模型组及对照组给等体积生理盐水。给药结束后处死动物取血、分离血清,检测HA、LN、PⅢP及TGF-β1、TNF-α含量。结果野鸦椿高、低剂量组HA、LN、PⅢP及TGF-β1、TNF-α均明显低于模型组,高剂量组HA、LN浓度与秋水仙碱组无显著性差异,PⅢP则高于秋水仙碱组,而低于低剂量组;野鸦椿高剂量组TGF-β1浓度与秋水仙碱组无显著性差异,而低剂量组则高于秋水仙碱组,野鸦椿高剂量组则显著低于低剂量组;野鸦椿高、低剂量组TNF-α浓度均高于秋水仙碱组,野鸦椿高剂量组则显著低于低剂量组。结论野鸦椿水提物具有抗慢性肝纤维化的作用,并存在一定的量效关系,抗肝纤维化的作用可能与其抑制TGF-β1升高有关。