乐凯感绿医用X射线胶片

随着照相科学的发展 ,在医疗影像领域 ,“感绿型增感屏 +Ｔ颗粒Ｘ射线胶片”取代“感蓝型增感屏 +感蓝型Ｘ射线胶片”的模式已是一种必然的趋势。乐凯感绿医用Ｘ射线胶片ＫＸ180是乐凯胶片集团公司为适应市场需求最近推出的一种新产品 ,已于2 0 0 1年正式投放市场。该胶片与受激后发射绿光的稀土增感屏组合使用 ,与传统的感蓝体系相比 ,具有以下技术特点和优势 : Ｔ颗粒乳剂技术 降低交迭效应技术 特殊的光谱增感技术 新型保护层技术 提高感光度 提高影像清晰度 提高影像锐利度 提高冲片能力 提高Ｘ射线影像宽容度现将医用感绿Ｘ射线胶片所…     

我国医用X线胶片的前景探讨

随着直接数字射线照相DDR、计算机射线照相CR、成像版IP等新成像技术在医学成像界的逐步推广应用,传统的X线胶片,包括各种感兰片、感绿片、CT片等的市场已逐步被这些新成像系统产品所占据,在我国的大城市,有些医院（如上海瑞金医院）已经把X线成像的相关工作,包括：照相、诊断、交流、存档、检索、教学、研究全部数字化,不使用胶片了;尽管如此,由于我国广大农村人口卫生保健全面改善的实际需要和支付水平,以及传统医用X线胶片和成像设备的较低价格,胶片仍然还在广泛使用,因此我国最近几年的医用X线胶片的消费量还是在逐步增长,而且预计今后还要继续增长。本文以海关的进出口数据和对医院就诊人数的统计,进行全面分析说明这个问题。     

天津MGL型感绿医用X线胶片

1前言 医用 X线胶片作为医疗诊断用的重要信息记录材料,自 20世纪初至今,始终是医学影像诊断的重要手段,被医疗卫生界所广泛应用。 医用 X线胶片主要有与常规钨酸钙增感屏组合使用的感蓝医用 X线胶片和与发射绿光的稀土增感屏组合使用的感绿医用 X线胶片两大系列。 天津牌感蓝医用 X线胶片已有四十多年的生产历史。产品主要性能基本达到国外同类产品水平,成为国内深受用户欢迎的知名产品。面对国外感绿医用 X线胶片于 90年代初开始在我国推广并取得成功的形势,为了满足我国医疗卫生界对感绿医用 X线胶片的需求,天津远大感光材料…     

T颗粒X线胶片和矽肺X线摄影

本文以实例表明用柯达T颗粒感绿X线胶片配合专用的硫氧化钆/铽稀土元素绿增感屏进行矽肺肺摄影可以取得优越的临床诊断效果:细微结构清晰、信息量增加,有利于早期病变的检出。X线投照量仅需作对比用的常规富士感蓝X线胶片和钨屏组合的五分之一至三分之一。     

感绿医用X线胶片感光度测定时施照光光度谱成分探讨

新颁布的测定医用Ｘ线胶片感光度的国际标准规定,用Ｘ－射线作为感光测定曝光时的光源,此法精确,但所需设备复杂,操作耗时。因此,在日常的检测工作中,采用特定的可见光代替Ｘ线射线为感光测定时曝光的施照光,是实施而合理的方法,本文介绍一组绿色可见光,可适用于测定感绿医用Ｘ线胶片的感光度。     

天津牌荧光缩影医用X射线胶片

天津牌荧光缩影医用X射线胶片是一种正色性、高感光度，中等反差，细颗粒，单面涂布感光层的胶片，专门适用于拍摄X射线间接摄影机荧光屏上的图像，其生产过程采用一系列先进而精密复杂的工艺技术，如：计算机控制双注法乳化，特殊晶型卤化银颗粒，新型化学增感技术，高速光学增感剂，新型坚膜剂等，因此其质量可与一些世界名牌产品媲美。     

感绿医用X线胶片感光度测定时施照光光谱成分探讨

新颁布的测定医用X线胶片感光度的国际标准规定 ,用X -射线作为感光测定曝光时的光源 ,此法精确 ,但所需设备复杂 ,操作耗时。因此 ,在日常的检测工作中 ,采用特定的可见光代替X射线作为感光测定时曝光的施照光 ,是实际而合理的方法。本文介绍一组绿色可见光 ,可适用于测定感绿医用X线胶片的感光度。     

感绿医用X线胶片及增感屏

1　感绿医用Ｘ线胶片是医用Ｘ线胶片的一种新型产品医用Ｘ线胶片的生产和应用经历了若干重要的发展阶段 ,而其中最为重大的技术进步就是由常规感蓝医用Ｘ线胶片发展为新型的感绿医用Ｘ线胶片。感蓝医用Ｘ线胶片与常规钨酸钙增感屏组成屏 /片系统自二十世纪初开始在医疗卫生界得到广泛推广应用 ,成为医学影像诊断的重要手段 ,为医疗卫生事业的发展作出了重要贡献。随着优质聚酯片基取代三醋酸片基应用于医用Ｘ线胶片生产 ,以及高温快速自动冲洗加工技术的推广应用 ,更进一步促进了医用Ｘ线胶片的发展。近一个世纪以来 ,医用Ｘ线胶片已发展成…     

医用S/F系统感绿胶片技术动态

感绿胶片／稀土增感屏系统可大大降低射线剂量。这主要是由于稀土增感屏比钨酸钙增感屏有较高的Ｘ线吸收效率及转换为可见光的效率。感绿的屏／片体系显示了细微的影像颗粒，具有较高的解像力。这主要是由于感绿片采用了Ｔ颗粒技术及抗交迭效应技术，提高了乳剂对荧光的吸收，同时防止交迭光的散射危害。     

医用感光材料及临床应用

医用感光材料属于黑白感光材料中的负性材料,如 X 射线胶片多为色盲片和少数分色片。作为 X 射线摄影工作者须了解胶片的种类,掌握胶片的照相性能,采用科学的测试法指导摄影实践。这是提高和保证工作质量的有效措施。一、医用X射线般片的种类、去毛' 以感色性分类'一" 1.色盲片:只对蓝象色光线敏感的X射线片称"色盲片"或感蓝片.. 2.感绿片:对绿色光线敏感的X射线胶片称感绿片。以用途分类 1.普通x射线胶片指X射线摄影中最常用的胶片,可按摄影部位不同选用各种尺寸的胶片,摄影时将胶片装入暗盒内应用。 2.牙科用     

CdTe介质膜与HgCdTe晶片间界面特性的研究

利用Ａｒ＾＋束溅射沉积技术在ＨｇＣｄＴｅ表面低温生长了ＣｄＴｅ介质薄膜。分别用ＣｄＴｅ介质膜和ＨｇＣｄＴｅ自身阳极氧化膜对ＨｇＣｄＴｅ表面钝化,利用光电导衰退信号波形的拟合,得到了不同表面钝化的ＨｇＣｄＴｅ非平衡载流子表面复合速度。结果表明,ＣｄＴｅ／ＨｇＣｄＴｅ界面质量已超过自身阳极氧化膜／ＨｇＣｄＴｅ界面质量。     

高阻隔包装材料─—聚偏二氯乙烯

综述了用聚偏二氯乙烯（ＰＶＤＣ）制造包装材料的几种方法，阐述了用ＰＶＤＣ乳胶涂敷法生产高阻隔薄膜的主要生产工艺，以及涂敷薄膜的性能和应用。     

新型界面结合强度检测技术理论及实验研究

膜/基界面结合强度的测量与评价已成为硬质薄膜技术发展与应用的关键问题.提出了1种新的测量方法———激光冲击检测技术,分析了在脉冲激光作用下,薄膜脱落的机理与数学模型.以测定TiN薄膜界面结合强度为例,用650～1000 mJ的脉冲激光对膜层进行加载,并采用体式显微镜和扫描电镜对薄膜的脱落情况进行表面观察,根据反射信号检...     

航摄胶片的数字测控冲洗技术

借助数字测量和自动控制技术，数字监控冲洗技术可在航摄胶片的冲洗过程中，实时、在线测量胶片影像的密度，并自动调整胶片的冲洗强度，从而解决多种曝光条件的航摄胶片同时冲洗加工的难题。数字测控冲洗技术是以数字测控冲洗机来实现的，主要的特点是，增加了胶片冲洗过程中的影像密度检测和喷雾增强显影的功能。实践应用证明，用这种冲洗机冲洗航摄胶片，能取得良好的冲洗效果。     

Density-controlled, solution-based growth of ZnO nanorod arrays via layer-by-layer polymer thin films for enhanced field emission

A simple, scalable, and cost-effective technique for controlling the growth density of ZnO nanorod arrays based on a layer-by-layer polyelectrolyte polymer film is demonstrated. The ZnO nanorods were synthesized using a low temperature (T = 90?°C), solution-based method. The density-control technique utilizes a polymer thin film pre-coated on the substrate to control the mass transport of the reactant to the substrate. The density-controlled arrays were investigated as potential field emission candidates. The field emission results revealed that an emitter density of 7?nanorods?μm(-2) and a tapered nanorod morphology generated a high field enhancement factor of 5884. This novel technique shows promise for applications in flat panel display technology.     

Pattern transfer nanomanufacturing using magnetic recording for programmed nanoparticle assembly

We report a novel nanomanufacturing technique that incorporates patterned arrays built entirely from Fe?O? nanoparticles into a flexible and transparent polymer film. First, the nanoparticles are patterned using the enormous magnetic field gradients at the surface of commercial disk drive media, and then the resulting architecture is transferred to the surface of a polymer film by spin-coating and peeling. Since the particles are immobilized by the field gradients during the spin-coating process, the patterned array is preserved after peeling. To demonstrate the potential of this technology, we fabricate a 5 mm diameter all-nanoparticle diffraction grating capable of producing a white-light optical spectrum. We also demonstrate several extensions to this technology, where, by adding an external magnetic field during assembly, we create both periodic variations in topography, as well as a nanocomposite with two vertically and horizontally separated nanoparticle layers. As this technique leverages the nanometer resolution inherent in current magnetic recording technology, strong potential exists for low-cost nanomanufacturing of optical and electronic devices from a variety of nanomaterials with ～10 nm resolution.     

Hochfrequenz-Plasmastrahlquellen — Neue Werkzeuge für industrielle teilchenstrahlgestützte Dünnschichtprozesse

Radio-Frequency Plasma Beam Sources — New tools for industrial particle beam induced thin film processes The applications for ion beam techniques has moved from pure base research to industry, mainly for microelectronics applications. Their potential for future surface and thin film processes are known to a large number of users and developers in this area. However such techniques are relative sophisticated and due to the costs industrial applications are often limited. RF-plasma beam technology with its specific advantages may be a possible candidate to overcome these restrictions. For some applications RF plasma beam technology is just on the step to an industrial use. But this technique is still not generally known, and its possibilities deserves more attention. Within this article the principle of plasma beam formation and construction of plasma beam formation and construction of plasma beam sources are described. Some application examples show the possibilities given to users with this technique.     

切削刀具测温传感器SiO_2多层复合绝缘薄膜的制备及其性能表征

利用双放电腔微波ECR等离子体增强非平衡磁控溅射技术成功制备了切削刀具测温传感器的SiO_2多层复合绝缘薄膜,研究了SiO_2多层复合绝缘薄膜的制备工艺.通过扫描电镜、原子力显微镜、台阶仪和XPS对SiO_2功能薄膜的表面形貌、膜厚及成分进行了观测,结果表明,制备的多层复合SiO_2薄膜厚度小、绝缘性好,绝缘电阻达到9.5×10~(12)Ω.其与金属基体结合力可达16.7N,满足制作切削刀具测温传感器的要求.     

Synthesis and photoluminescent properties of nanocrystalline CaMoO4 thin film via chemical solution processing

Stoichiometric CaMoO4 thin film was successfully fabricated based on chemical solution processing. The thin films were deposited on Si(100) substrates by means of the spin-coating technique. X-ray diffraction reveals that the CaMoO4 thin film prepared are pure and well crystalline thin films. Atom Force Microscope photographs indicate that the film prepared possesses a homogeneous and dense surface morphology. The average grain size of the films was 40-50 nm, and the root-mean-square (RMS) of the surface roughness and the average surface roughness of the film measured were 2.161 nm and 1.726 nm respectively. The photoluminescent properties of calcium molybdate thin film under ultraviolet light excitation were systematically measured from 12 K to room temperature and a green emission band of the films were observed. The results of present work confirm that the chemical solution processing is a promising technology on the fabrication of CaMoO4 thin film.     

Plasmaunterstütztes Aufdampfverfahren eröffnet neue Perspektiven in der Brillen- und Feinoptik

Plasma-ion assisted deposition, a newly developed evaporation technique for the production of optical coatings results, in outstanding film properties even at a low substrate temperature. The results of single layer investigations in comparison with conventional evaporation demonstrate the physical effects that improve the film properties. The combination of hard- and anti reflexion coating in one vacuum process for plastic eye glass lenses reduces the production time drastically while the quality of the finished product is secured. The production of ultra stable interference filters for fiber optic communication applications demonstrates the superior ability of this technology.