从我院药品盘点工作的改进浅析医院药品的管理

运用医院电脑信息系统的盘点程序来进行药品盘点工作,使盘点准确率大大提高,为药剂科完成实时库存的管理打下了扎实的基础     

99Tcm-MIBI SPECT-CT同机图像融合技术在乳腺肿瘤显像及淋巴结转移判断中的应用

目的 探讨99Tcm-MIBI SPECT-CT同机图像融合技术对于乳腺肿瘤显像及淋巴结转移判断的临床应用价值.方法 对80例女性乳腺肿块患者行99Tcm-MlBI乳腺及腋窝淋巴结平面显像及99Tcm-MIBI SPECT-CT显像.所有患者均有手术后病理检查结果做对照.结果 80例患者中SPECT-CT融合图像对乳腺癌诊断的灵敏度88.2%(45/51),高于平面显像的82.4%(42/51).两者差异有统计学意义(P<0.05).SPECT-CT融合图像对原发性乳腺癌诊断的特异度、准确度分别为93.1%(26/29)、90%(71/80),均高于平面显像的79.3%(23/29)、81.3%(65/80).平面显像检测腋淋巴结的灵敏度77.2%(17/22),特异度86.2%(25/29),准确度82.4%(42/51),SPECT-CT融合图像检测腋淋巴结的灵敏度81.8%(18/22),特异度89.7%(26/29),准确度86.3%(44/51).两者比较差异无统计学意义(P0.05).结论 SPECT-CT图像融合显像技术在乳腺癌诊断的灵敏度、特异度和准确度均高于平面显像.在乳腺癌腋窝淋巴结转移探测方面SPECT/CT图像融合与平面显像相似.     

Simulation of Diffusion-Controlled Growth of Interdependent Nuclei under Potentiostatic Conditions

The problem of diffusion-controlled growth following an instantaneous nucleation event was studied within the framework of a new numerical model, considering the spatial distribution of hemispherical nuclei on the electrode surface and the mutual influence of growing nuclei via the collision of 3D diffusion fields. The simulation of the diffusion-controlled growth of hexagonal and random ensembles was performed at the overpotential-dependent number density of nuclei. The diffusion flow to each nucleus within a random ensemble was simulated by the finite difference method using the derived analytical expressions for the surface areas and the volumes formed at the intersection of 3D diffusion fields with the side faces of a virtual right prism with a Voronoi polygon base. The implementation of this approach provides an accurate calculation of concentration profiles, time dependences of the size of nuclei, and current transients. The results, including total current density transients, growth exponents, and nucleus size distribution, were compared with models developed within the concept of planar diffusion zones, the mean-field approximation and the Brownian dynamics simulation method, as well as with experimental data from the literature. The prospects of the model for studying the initial stages of electrocrystallization were discussed.     

A Numerical Measurement Method for Dynamic Granular Materials Based on Computer Vision

Granular materials are widespread in nature and human production, and their macro-mechanical behavior is significantly affected by granule movement. The development of computer vision has brought some new ideas for measuring the numerical information (including the amount of translation, the rotation angle, velocity, acceleration, etc.) of dynamic granular materials. In this paper, we propose a numerical measurement method for dynamic granular materials based on computer vision. Firstly, an improved video instance segmentation (VIS) network is introduced to perform end-to-end multi-task learning, and its temporal feature fusion module and tracking head with long-sequence external memory can improve the problems of poor video data quality and high similarity in appearance of granular materials, respectively. Secondly, the numerical information can be extracted through a series of post-processing steps. Finally, the effectiveness of the measurement method is verified by comparing the numerical measurement results with the real values. The experimental results indicate that our improved VIS obtains an average precision (AP) of 76.6, the relative errors and standard deviations are maintained at a low level, and this method can effectively be used to measure the numerical information of dynamic granular materials. This study provides an intelligent proposal for the task of measuring numerical information of dynamic granular materials, which is of great significance for studying the spatial distribution, motion mode and macro-mechanical behavior of granular materials.     

腰椎椎弓峡部裂的影像学特征

目的：探讨腰椎椎弓峡部裂与椎间小关节在横断图像上的影像学特征。方法：收集腰腿痛病人729例,经X光与CT检查,显示不清者做椎弓头倾角扫描。结果：729例病人中X光对于不伴有椎体滑脱的椎弓峡部裂的检出率约为0.68%,对于有椎体滑脱的椎弓峡部裂检出率约2.79%。CT对于不伴有椎体滑脱的椎弓峡部裂检出率达10%。结论：对椎弓峡部裂CT扫描是一个可靠的手段,反角度扫描可以将椎弓峡部裂与椎间小关节同时清晰地展示于一个层面,有利于对该病的诊断及鉴别诊断。     

电脑红外光乳腺诊断仪在门诊乳腺疾病诊断中的应用

目的：探讨电脑红外光乳腺诊断仪在妇女乳腺疾病诊断中的应用价值.方法：对1000例已婚及未婚女性门诊乳腺疾病患者进行检查,并对检查结果进行统计.结果：查出各种乳房疾病872例,检出率高达87.20%,其中乳腺癌25例,占2.50%,乳腺增生、纤维腺瘤、瘤样增生、急性乳腺炎分别占69.10%、8.30%、3.90%和1.20%.结论：电脑红外光乳腺诊断仪具有对人体无损害、检查过程简捷、直观、可反复动态观察、适用与各年龄段妇女等诸多优点,对妇女乳腺疾病诊断有一定的价值.     

浅谈古方筛选利用的思路与方法

为发掘利用中医古方,结合现代计算机技术和循证医学理念,探讨古方筛选利用的思路与方法,使向古方要新药的构想具有一定的可行性。     

医案查询统计分析系统介绍

为促进计算机整理中医古藉工作，研制了古今医案查询统计分析系统。该系统在对医案中的词语进行词素解析的基础上，建立了查询专用主题词表；采用主题词与逻辑运算符组合的查询方式，并在正式查询前对查询表达式进行合法性检查；按症状、病机、治法、药物四个方面进行相关频次统计，并以超级链接的方式供查询者获得具体原始信息。该系统不仅适用于查询，还便于多角度统计分析医案的特点，具有较强的实用价值。     

基于数据挖掘的小儿肺炎中医辨证动态量表的生成方法

本文利用数据挖掘技术对大量小儿肺炎的病例数据进行处理,提出一种小儿肺炎中医辨证动态量表的生成方法,根据数据挖掘结果动态生成不同证型的量表,通过量表计算出标准化分值,确定病儿所属的证型及程度,为医生提供辅助诊断。该方法克服了传统中医辨证诊断无严格量化标准和存在主观性的不足,增强了中医辨证诊治的科学性。     

320排动态容积CT冠状动脉成像在隐匿性冠状动脉疾病筛查中的应用评价

目的 探讨320排动态容积CT冠状动脉成像在隐匿性冠状动脉疾病筛查中的应用价值.方法 对57例无冠心病症状的体检者行320排动态容积CT全心扫描后,对冠状动脉及其分支进行重建及分级评价,并评价成像质量及估算有效辐射剂量.结果 发现狭窄性病变34例,其中多支狭窄性病变25例,单支狭窄性病变9例;重度狭窄(≥75%)4支,中度狭窄(50%～75%)9支,轻度狭窄(＜50%)55支.图像质量1级51例,2级6例.平均辐射剂量(2.67±0.47)mSv.结论 320排动态容积CT冠状动脉成像检查对隐匿性冠状动脉疾病的检出具有重要意义.