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21.
本文分析了20例有明确蛛网膜下腔出血病史的正常颅压脑积水患者的临床表现,其中有智能、步态障碍、尿失禁三联征典型表现者占11例(55%),有其中二个症状者4例。CT是诊断脑积水的首选检查。本文还结合文献对正常颅压脑积水的发生发展,与之有关的因素及临床表现进行讨论。 相似文献
22.
T. Fest A. Rozenbaum F. Cattin R. Chambers J. -P. Carbillet J. -F. Bonneville 《Neuroradiology》1988,30(6):569-570
Summary We report a case of non-Hodgkin's lymphoma with CNS involvement confined to the epidural space causing cranial suture diastasis. Cerebrospinal fluid and bone marrow were normal. Two cases only of cranial epidural lymphoma have been reported in the literature; in both cases, the leptomeninges were also involved but without suture diastasis. 相似文献
23.
The present study was conducted to examine changes in water concentration in the ventral prostate of adult rats at different intervals following castration. The prostatic dry weight was obtained by drying the fresh prostate at 70 degrees C for at least 110 hr and the prostatic water content was calculated from its wet and dry weight. Under normal conditions, the prostatic water concentration ranges from 81.9 to 82.7% in uncastrated rats. The prostatic water concentration started to increase at 8 hr postcastration (83.1%) but this increase was not statistically significant. By 16 hr postcastration, the prostatic water concentration (83.8%) became significantly higher than that of the uncastrated animals. In rats of day 1 to day 10 postcastration, the prostate contained significantly more water (84.4%-84.7%) than those in uncastrated animals. By day 21 postcastration, the prostatic water concentration (81.5%) was not significantly different from that of uncastrated rats. Unlike the prostate, the skeletal muscle did not significantly change the water concentration following castration. The 51Cr-EDTA space in the prostate was not significantly different in rats before and after castration. These results indicate that water imbibition in the rat prostate is associated with an active period of prostatic regression and that the change in the 51Cr-EDTA space during prostatic regression is not the major cause of water imbibition in the tissue. Therefore, the present findings suggest that castration-induced water imbibition in the rat prostate is caused by an increase in the intracellular water space. 相似文献
24.
This study was undertaken into rats to investigate changes in the hepatic lymph vessels and the space of Disse in endotoxaemia and to examine their relationship with the development of endotoxin-induced hepatic injury. Lymph stasis, namely dilatation of the lymph vessels and oedema, developed rapidly in the medium-sized portal canals, the large portal canals, and the liver hilum after endotoxin injection, but not in the small portal canals. Such changes reached their maximum 4-8 h after endotoxin injection and had recovered markedly by 16 h after the injection. The space of Disse remained within normal limits during this period. These findings suggest that the intrahepatic lymph stasis in endotoxaemia may be caused by a reduction in the pumping activity of the extrahepatic and the intrahepatic large lymph vessels rather than by an increase of lymph formation in the liver lobules. There was no evidence suggesting a direct relationship between the disturbance of hepatic lymph flow and the development of hepatic injury in endotoxaemia. 相似文献
25.
目的:在HRCT图像上测量正常成人蒲氏间隙(Prussak space)的宽度,为胆脂瘤早期诊断提供参考。材料和方法:60例正常成人耳部(男性和女性各30例)做冠状位HRCT扫描,测量锤骨颈外缘至鼓室盾板尖端的距离(相当于蒲氏间隙宽度),并作统计学分析。结果:测量值在1-1.5mm之间,平均1.22±0.098mm。平均值分别为:男性左耳1.193±0.021mm;男性右耳1.227±0.019mm;女性左耳1.213±0.016mm;女性右耳1.233±0.015mm,统计分析显示男女之间和左右耳之间均无明显差异(t=0.255,t=1.137和t=0.845,均P>0.05)。结论:正常成人蒲氏间隙宽度在HRCT图像上约为1-1.5mm,性别与双耳之间无明显差异,此间隙宽度>1.5mm可作为诊断上鼓室胆脂瘤的一个重要依据。 相似文献
26.
Objective: To explore the therapeutic methods, surgical indications and clinical practice of minimally invasive surgery on traumatic epidural hematoma (EDH). Methods: Retrospective study was made on 135 patients with traumatic EDH admitted into our hospital from June 2002 to August 2005. Sixty-five patients were treated with mini-invasive negative pressure drainage (treatment group), 70 patients with comparable condition used traditional craniotomy (control group ). The mean time of operation, average days in hospital, expenditure and prognosis of two groups were recorded and analyzed. Results: There was no significant difference in therapeutic efficacy between two groups. Patients in treatment group had a shorter hospital stay and less expenditure than those in control group. Conclusion: Mini-invasive negative pressure drainage is simple, effective, economical and applicable to some traumatic EDH patients. 相似文献
27.
顶空—气相色谱法测定盐酸洛美利嗪中乙腈残留量 总被引:6,自引:1,他引:5
目的:建立盐酸洛美利嗪原料药中乙腈残留量的测定方法。方法:采用顶空进样法,80%DMF水溶液为溶剂,平衡温度70℃,平衡时间40min,气相色谱条件:采用不锈钢填充色谱柱:柱长2m,内径3mm,粒径为0.25-0.32mm的二乙烯苯与乙基乙烯苯共聚物有机担体为填料,柱温130℃,FID检测器,检测器温度250℃,氮气为载气,流速50mL.min^-1。结果:乙腈在23.46-234.6μg.mL^-1的浓度范围内呈良好的线性关系(r=0.9978),回收率为96.7%(RSD=3.8%),检出限小于40μg.g^-1。结论:本方法简单,快捷且灵敏度高,可以用于盐酸洛洛美利嗪中乙腈残留量的控制。 相似文献
28.
Reliability of a Store Observation Tool in Measuring Availability of Alcohol and Selected Foods 总被引:1,自引:0,他引:1
Deborah A. Cohen Diane Schoeff Thomas A. Farley Ricky Bluthenthal Richard Scribner Adrian Overton 《Journal of urban health》2007,84(6):807-813
Alcohol and food items can compromise or contribute to health, depending on the quantity and frequency with which they are
consumed. How much people consume may be influenced by product availability and promotion in local retail stores. We developed
and tested an observational tool to objectively measure in-store availability and promotion of alcoholic beverages and selected
food items that have an impact on health. Trained observers visited 51 alcohol outlets in Los Angeles and southeastern Louisiana.
Using a standardized instrument, two independent observations were conducted documenting the type of outlet, the availability
and shelf space for alcoholic beverages and selected food items, the purchase price of standard brands, the placement of beer
and malt liquor, and the amount of in-store alcohol advertising. Reliability of the instrument was excellent for measures
of item availability, shelf space, and placement of malt liquor. Reliability was lower for alcohol advertising, beer placement,
and items that measured the “least price” of apples and oranges. The average kappa was 0.87 for categorical items and the
average intraclass correlation coefficient was 0.83 for continuous items. Overall, systematic observation of the availability
and promotion of alcoholic beverages and food items was feasible, acceptable, and reliable. Measurement tools such as the
one we evaluated should be useful in studies of the impact of availability of food and beverages on consumption and on health
outcomes. 相似文献
29.
Pippa Storey Fred J Frigo R Scott Hinks Bryan J Mock Bruce D Collick Nicole Baker Jonathan Marmurek Simon J Graham 《Magnetic resonance in medicine》2007,57(3):614-619
Partial k-space sampling is frequently used in single-shot diffusion-weighted echo-planar imaging (DW-EPI) to reduce the TE and thereby improve the SNR. However, it increases the sensitivity of the technique to bulk rotational motion, which introduces a phase gradient across the tissue that shifts the echo in k-space. If the echo is displaced into the high spatial frequencies, conventional homodyne reconstruction fails, causing intensity oscillations across the image. Zero-padding, on the other hand, compromises the image resolution and may cause truncation artifacts. We present an adaptive version of the homodyne algorithm that detects the location of the echo in k-space and adjusts the center and width of the homodyne filters accordingly. The adaptive algorithm produces artifact-free images when the echo is shifted into the high positive k-space range, and reduces to the standard homodyne algorithm in the absence of bulk motion. 相似文献
30.