数字减影血管造影图像数据备份存储方式探讨

目的探讨适合数字减影血管造影（DSA）图像备份存储的最简便和最实惠的存储方式。方法将429例具有完整临床资料患者的DSA图像资料进行光盘刻录、图像存储和传输系统（PACS）存储和USB移动存储。对3种方法的备份耗费的时间、调阅所需时间、所耗费用、操作的简便性及图像质量进行比较。结果USB移动储蓄的备份所需时间、调阅所需时间、费用、每例患者备份成本明显低于前两种方法，而且操作简单、图像质量好。结论USB移动存储是最简便和最实惠的DSA图像数据存储方式，可作为常规方法加以推广。     

Integrating learning contexts in a medical informatics program—preparing for the introduction of PACS

This paper analyzes the possibilities to extend learning contexts within a one-year medical informatics educational program (MIP) at a Radiology Department in Sweden¹. The MIP was carried out within a theoretical framework based upon the integration of four learning contexts, which were inspired by Nonaka's theory of organizational knowledge creation. A summary of organizational knowledge creation theory and the ideas behind the learning contexts are presented. The main objective of the study was to investigate what would be the major benefits from the use of various learning contexts in a one-year medical informatics program? The MIP was found to form a basis for better learning conditions by increasing the flexibility, accommodating greater numbers of students as well as offering better possibilities for continuous learning. Evaluation of the MIP revealed that 98% of radiology department staff as compared to 39% of the intensive care unit staff, who had followed the hospital routine program, felt competent enough to independently use the functions of a new medical system. Although there are good reason to believe that the superior confidence for information technology (IT) is due to the integration of learning contexts, it can not be excluded that it may be due to other reasons also.     

A time–motion study of digital radiography at implementation

With increasing budgetary restraints on the health system, it is apparent that the main contribution that radiology departments can make to significant cost reduction in hospitals is to decrease the length of time between requesting an X-ray examination and receiving the report (and images). Digital radiography (DR) was introduced into the Radiology Department at the Royal Adelaide Hospital as a pilot project to research the cost–benefits and efficiency of the system, and to determine future directions for planning a digital department. The business plan developed prior to implementation of this pilot project predicted a saving of one bed-day per inpatient when a fully digital department with a picture archiving and communication system (PACS) is installed. This initial study comparing DR and conventional radiography (convR) provides baseline data and shows encouraging results for more rapid transmission of reports to clinicians.     

过期妊娠处理方案的探讨

过期妊娠由于胎盘“老化”,功能不全,易引起胎儿宫内窘迫,甚至死亡。本文介绍40～42孕周孕妇在门诊进行系统监护及住院后积极、慎重的处理方案。结果表明效果良好,无围产儿死亡。过期妊娠剖宫产率偏高,宫内窘迫、头盆不称、引产失败是其主要适应证。提高促宫颈成熟方法的效果及引产成功率是今后努力的方向。     

T=PACS在医学影像学进修生继续教育中的应用

医学影像学继续教育是放射科医师提高影像诊断水平的重要手段。为适应医学教育的发展,唐都医院放射科结合自身优势,构建拥有自主知识产权的医学图像存储与通信教学系统,并利用此系统积极开展进修生继续教育。该系统的使用提高了教学效率和教学质量,促进了进修生继续教育的发展。     

基于PACS医学影像数字化教学平台的构建和应用

基于图像存档与传输系统（PACS）医学影像数字化教学平台由医学影像网络教学系统和医学影像教学资源库两部分组成。医学影像网络教学系统包括课堂管理、作业管理、教学管理和考试管理4大功能模块。医学影像教学资源库包括理论教材、典型病例、检查技术方法和医学影像设备的文字、图片、音频、视频、动画资料等。通过在理论课和阅片训练实践课教学中的应用,凸显了医学影像学教学的特点,发挥了学生学习的主观能动性。     

PACS在中枢神经系统影像学教学中的应用

目的:检测乳腺癌蒽环类药物耐药细胞株中微小RNA(microRNA,miRNA)的表达差异,探讨miRNA与乳腺癌化疗耐药的关系.方法:miRNA芯片检测乳腺癌蒽环类药物(阿霉素)耐药细胞MCF-7/ADM和其亲本细胞MCF-7的miRNA表达谱,找出差异表达的miRNA,并利用实时荧光RT-PCR法对miRNA芯片结...     

Effect of low tube kV on radiation dose and image quality in retrospective ECG-gated coronary CT angiography

IntroductionCoronary computed tomography angiography (CCTA) has emerged as a useful diagnostic imaging modality in the assessment of coronary artery disease. However, the potential risks due to exposure to ionizing radiation associated with CCTA have raised concerns.ObjectivesCCTA can be done with low dose technique to reduce radiation exposure, without compromise of image quality or diagnostic capabilities.Material and methodsForty patients referred for CCTA were examined with low kV (100 kV for patients ?85–61 kg and 80 kV for patients ?60 kg). The dose length product (DLP) were compared with other group (40 patients) with comparable body weight, scan length and acquisition parameters. The second group was selected from PACS database, for which CCTA was done with standard 120 kV.ResultsThere was considerable reduction of radiation dose about 40% with 100 kV and 60% with 80 kV compared to standard 120 kV CCTA protocols with preserved image quality.ConclusionThe use of lower tube voltage leads to significant reduction in radiation exposure in CCTA. Image quality in non-obese patients is not negatively influenced.