共查询到18条相似文献,搜索用时 156 毫秒
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超声生物显微镜主要应用于眼科,是眼科重要的超声检查设备。该文设计了一种便携式、低功耗、高性能的眼科超声生物显微镜探头,在电脑上插上USB接口即可使用。 相似文献
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实时全景超声成像技术及其临床应用 总被引:1,自引:0,他引:1
目的:介绍了一种拓宽视野成像技术-实时全景超声成像技术及其临床应用。方法:通过检索国内外相关文献,从实时全景超声成像的基本原理、实现过程以及临床应用等方面进行论述。结果:实时全景超声成像已应用于临床,在医学影像诊断中,特别是在对较大器官和肿块的显示与测量、对复杂病变整体的研究方面具有独特优势。结论:实时全景超声成像在临床诊断的某些方面具有独特优势,具有较大的发展潜力,是超声成像发展的方向之一。 相似文献
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目的:为解决市场上现有的超声生物显微镜体积大、显示终端单一和扫描探头操控不灵活等问题,设计基于模块化的超声生物显微镜。方法:该超声生物显微镜由采集模块和上位机模块2个部分组成。采集模块包括扫描探头模块、主机模块和电源适配器模块,其中扫描探头模块采用小角度扇形扫描方案,包括超声换能器、前置放大电路和电动机传动装置3个部分;主机模块包括现场可编程门阵列(field programmable gate array,FPGA)控制单元、超声发射电路、电动机驱动电路、增益调节电路、后级放大电路和USB通信接口。上位机模块运行平台包括Windows和Android 2种,运行于Android平台的上位机应用程序由Java语言编写,软件开发平台为Eclipse(V4.5);运行于Windows平台的上位机应用程序基于MFC平台开发,软件开发工具为Microsoft Visual Studio 2015。结果:该超声生物显微镜的侧向和轴向分辨力均能达到50μm,可清晰显示皮肤图像和眼睛图像。结论:该超声生物显微镜性能优越、小巧便携、便于医生灵活操作,能有效满足临床高清图像采集的需要。 相似文献
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目的探讨超声生物显微镜在原发性闭角型青光眼诊断中的应用效果。方法选择医院2018年2月至2020年2月接收的疑似原发性闭角型青光眼患者60例,均行超声生物显微镜诊断,以临床综合诊断作为金标准,分析超声生物显微镜诊断原发性闭角型青光眼的价值,比较不同疾病类型患者超声生物显微镜定量检测指标水平。结果临床综合诊断结果显示,60例疑似患者中,原发性闭角型青光眼49例,非原发性闭角型青光眼11例。超声生物显微镜诊断原发性闭角型青光眼的准确度为90.00%,灵敏度为91.84%,特异度为81.82%。非原发性闭角型青光眼患者的前房深度、角膜厚度、晶状体厚度均高于原发性闭角型青光眼患者,房角开放距离500低于原发性闭角型青光眼患者,差异有统计学意义(P<0.05)。结论超声生物显微镜在原发性闭角型青光眼诊断中的应用效果良好,能够观察眼前结构,定量测量房角开放程度、前房深度等。 相似文献
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朱明善 《中国医疗器械杂志》2014,(2):122-125
超声生物显微镜(UBM)在眼科已应用二十多年,对眼睛疾病尤其是青光眼病的诊断发挥了重要作用。经过多年的研究,眼科超声生物显微镜在整机结构、传感器、成像技术、应用研究均有发展。 相似文献
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分析了国内外医院超声影像科室的地位及作用差异,同时从超声医学设备的先进技术特点,包括各种新型超声探头的种类及功能,以及超声诊断技术在临床工作中的优势应用等方面,阐述了国内现代超声医学的发展现状和应用前景。 相似文献
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医学超声影像设备的新进展与发展趋势 总被引:2,自引:1,他引:1
超声影像设备与CT、DSA、MRI等其它影像设备相比,具有无创伤,简便易行、相对价兼等优势,广泛用于临床,倍受广大医务工作者和患者的欢迎。临床使用单位提出的种种要求,促使超声影像设备的领域发生了重大的变化,目前最显著的发展特点是应用范围不断拓展,性能不断提高,功能不断完善。1超声影像设备的新进展 目前超声影像设备的新进展主要在其技术进展,这里仅选择其中市场上应用较多的予以介绍。某些技术进展是和设备的设计相关的,也就是按照使用单位的要求,尽可能将设备制造得小巧些,操作方便些,大多数的技术进展在于… 相似文献
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Shang Z Ren X Zhang J Zhu X Qi H Liu Q Zhang K Wu S Zeng Y 《Australasian physical & engineering sciences in medicine / supported by the Australasian College of Physical Scientists in Medicine and the Australasian Association of Physical Sciences in Medicine》2006,29(3):267-271
OBJECTIVE: As ultrasound has become an important therapeutic technique on tumor, in order to find the cell-killing effect of focused bi-frequency ultrasound activated hematoporphyrin derivatives, experimental study was processed in vitro. METHODS: Tumor cells K562 and SW-480 were killed by focused bi-frequency ultrasound activated hematoporphyrin (Hp) derivatives under optimized ultrasonic parameters and the cell-killing effect was tested by MTT (Thiazolyl blue: 3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide) technique. RESULTS: The lower frequency (0.6 MHz) was better than the higher (1.1 MHz) in activating hematoporphyrin derivatives; the bi-frequency was better than mono-frequency, and the cell-killing efficiency was 2-3 times of sum of the two kinds of ultrasounds which constitute bi-frequency. Incubation for the 16 h was better than 4 h after the cells exposed to the ultrasound. CONCLUSION: The method of killing tumor cells by focused bi-frequency ultrasound activated hematoporphyrin derivatives is presented and evaluated in this paper. 相似文献
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The Smolensk Region (Russian Federation) was used to assess how ultrasound diagnosis is made in the therapeutical and prophylactic institutions. Requirements for the diagnosis are worded in terms of regional, organizational, and other features. At the same time the paper gives main criteria for assessing the obsolescence of equipment; data on the level of organization of service; a share of brands of equipment; and characteristics of manufacturers in the ultrasound equipment market of the Smolensk Region. 相似文献
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Ultrasound: biological effects and industrial hygiene concerns 总被引:1,自引:0,他引:1
Due to the increased use of high intensity ultrasonic devices, there is now a greater risk of worker exposure to ultrasonic radiation than there was in the past. Exposure to high power ultrasound may produce adverse biological effects. High power ultrasound, characterized by high intensity outputs at frequencies of 20-100 kHz, has a wide range of applications throughout industry. Future applications may involve equipment with higher energy outputs. Contact ultrasound, i.e., no airspace between the energy source and the biological tissue, is significantly more hazardous than exposure to airborne ultrasound because air transmits less than one percent of the energy. This paper discusses biological effects associated with overexposure to ultrasound, exposure standards proposed for airborne and contact ultrasound, industrial hygiene controls that can be employed to minimize exposure, and the instrumentation that is required for evaluating exposures. 相似文献
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目的:探讨超声在胎儿泌尿系统异常中的应用价值。方法:通过分析18例胎儿泌尿系统异常的声像图特征,结合后续复查随访,判断病变的性质。结果:18例异常中,多数病例为功能性病变,器质性病变如无其他系统合并症,大多为非致死性。结论:超声对胎儿泌尿系统异常的检出及性质的判断有较大的优势,但也存在一定的客观局限性。 相似文献
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目的:对壳聚糖创伤敷料进行生物学评价。方法:进行皮肤致敏以及细胞毒性试验,溶血试验,并按照国家统一标准判定。结果:细胞毒性试验:镜下见小鼠成纤维细胞生长良好,可见少量圆形细胞,偶见细胞溶解,细胞相对增值度为81%,细胞毒性总评级为1级,极轻细胞毒性。致敏试验:产品材料等级评分为0,无致敏反应。溶血试验:溶血率为0.386%,<5%,表明无溶血现象。 相似文献
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The goal of this work was to compare the photodynamic, ultrasound, and combined methods for treatment of pyonecrotic and sluggish wounds. The advantages and disadvantages of the methods are discussed. Equipment for implementation of the combined method is considered. The interaction between the equipment and biological object is described in terms of a bioengineering system. 相似文献