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目的采用数字化X线机,对影像作出甲、乙、丙废片的评定。方法美国柯达Kodak-DR3500领航者单板多功能CU臂连动式摄影,配置KodakDryView8900激光打印机及配套干式胶片及中文显示的Kodak功能强大的操作控制台,KodakEvp版本软件和后处理工作站。结果具有全面的数字解决方案、高效的工作流程、稳定可靠的安全系统,可根据诊断需要进行影像缩小、放大、切割,局部显示病灶,调节窗宽窗位,边缘锐化,测量,标记等处理打印出来的照片质量。按照《国家放射科QA,QC学术研讨会纪要》的评审标准进行分析,作出甲、乙、丙废片的评定,甲级照片率〉99%,丙级及废片率几乎为0。结论数字化X线摄片可提供比较准确的临床满意的报告结果,为临床诊断奠定基础,提高了对疾病的认识,减轻了患者接触射线的剂量,减少了环境污染。 相似文献
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<正> 自从1895年伦琴发现X线以来,首先应用于医学领域的技术手段是摄影(拍片)和荧光透视。后来,造影剂的问世,使X线的应用范围扩展到那些自然对比度较差的组织系统(如胃肠道、支气管、血管以及脑室等),成为传统X线诊断技术的基本方法,也是世界上最早普及的非创伤内脏检测手段。在这个发现86年后的1981年6月在布鲁塞尔召开的第15届国际放射学会上首次提出了数字X线摄影技术的物理及临床应用结果。X线技术数字化:简单的讲就是传统X线技术与计算机技术接轨。X线技术与计算机结合所带 相似文献
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1 CR系统基本结构 1.1 概念 CR系统即计算机X线摄影,采用磷光体构成的成像板(口板)吸收投照到成像板上的X光信息,通过激光扫描读出板上的潜影后,再通过光电转换,输入计算机后重建成数字X线影像。 相似文献
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通过162例肋骨骨折的DR片与传统X线片进行对照分析,探讨DR对肋骨骨折在法医临床上的应用价值。从数据统计得出DR对于肋骨骨折的诊断,准确率达99%远高于传统X线片。不同的法医学鉴定标准对肋骨骨折的诊断又有着不同的要求,明确诊断肋骨是否骨折及骨折的类型和骨折的具体根数,对于相关的法医鉴定结论是至关重要的。 相似文献
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本文从计算机X线摄影和直接数字化X线摄影的成像原理及构成方面综述了数字化X线摄影成像技术的现状及其在临床方面的应用。 相似文献
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In 2006 over 55,000 primary total hip replacements were implanted in the UK. A crucial aspect of follow-up for these patients is the assessment of the postoperative radiograph. Information gained from the initial radiograph includes assessment of the quality of implantation and hence the likelihood of long term success. Follow-up radiographs can be assessed for signs of component failure. Orthopaedic surgeons, radiologists, junior surgical trainees, general medical practitioners, and advanced nurse/extended scope practitioners may all be required to interpret these radiographs during clinical practice. The authors feel that certainly during orthopaedic surgical training, not enough time is allocated to formal training on the systematic assessment of such radiographs. This review aims to provide the reader with a systematic approach to analysing the initial postoperative total hip arthroplasty radiograph, and subsequent follow-up films. Basics of patient positioning for obtaining radiographs, types of prosthesis encountered, and terminology used are covered. Assessment of initial radiographs focuses on assessing leg length, acetabular and femoral positioning, and cement mantle adequacy. Follow-up radiographs are assessed for signs of component failure. A review of the literature provides evidence for the assessment and importance of adequacy of component positioning, and good cementing technique. Normal and abnormal follow-up radiographic features are outlined to allow assessment of loosening or impending failure of a prosthesis. 相似文献
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目的:探讨膝关节负重屈曲45°位X线检查诊断膝关节骨性关节炎的价值.方法:2006年3月~2009年2月,63例(92膝)骨性关节炎患者与同期的41例(82膝)正常对照均行负重伸直和负重屈曲45°位的X线检查.应用患者及正常对照者的X线片测量关节间隙,并进行统计分析.根据软骨病变程度,将病例组分为0~Ⅱ组和Ⅲ~Ⅳ组进行比较.结果:病例组关节间隙显著小于对照组(P<0.05),以内侧更为明显.病例组患者屈曲45°位内外侧关节间隙均显著小于伸直位(P<0.05),以外侧更为明显.Ⅲ~Ⅳ组伸直位和屈曲 45°位时内外侧关节间隙均较0~Ⅱ组显著变小(均P<0.05),其中屈曲位时外侧间隙减小最为明显.结论:膝关节负重屈曲45°位X线检查对关节软骨损伤部位及程度有较好诊断意义. 相似文献
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I H Kerr 《Postgraduate medical journal》1970,46(531):3-10
The normal anatomy of the pulmonary vessels is considered and correlated with the angiographic appearances. 相似文献
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SARS胸片特点及其动态演变 总被引:8,自引:1,他引:7
目的:观察严重急性呼吸道综合征(Severe Acute Respiratory Syndrome, SARS,即非典型肺炎)胸片特征及其随病程和治疗的动态演变.方法:回顾性调查我院23例SARS患者入院时、极期和恢复期的胸片病变部位、性质, 并对全部系列胸片进行半定量分析,了解其动态演变特点及其与治疗的关系.结果:早期和极期均为下肺野、外带易受累,进展期91.3%的病例为双侧、91.2%为多肺野受累(47.8%两肺野,3个或4个肺野受累均为21.7%).病变特点以渗出性病变为主(斑片和磨玻璃影),密度均匀,边界模糊,具有易变性.17例极期病变的吸收与激素使用或加量有关;部分患者胸片改善与症状好转不同步,胸片与症状同时改善者11例,胸片改善在前者6例,症状改善在前者6例.半定量分析显示,有6例患者胸片出现第2峰,平均时间为13.2天,平均持续5.8天,且多数与患者的症状加重相关.结论:SARS患者胸片具有一定的特征,其动态改变能够反映临床情况,并指导治疗. 相似文献
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Collapse of a lobe of a lung is an important indicator of a range of conditions, including malignancy. Clinical symptoms and signs may suggest a diagnosis of lobar collapse; however, it is often diagnosed, and always needs to be confirmed, with radiological examination. The radiological signs may be subtle, difficult to interpret and sometimes confusing to both clinicians and radiologists. Although multidetector CT (MDCT) is now widely in use for confirming and diagnosing lobar collapse, the plain chest radiograph is usually the first imaging modality performed and so recognition on the plain film remains of vital importance. The basics of chest radiograph interpretation are reviewed, concentrating on the concepts of radiographic density and the silhouette sign. MDCT images are used to demonstrate the general radiological signs of collapse, and the signs of collapse that are specific to the different lobes of the lung are reviewed. 相似文献