The application value of direct digital radiography and low-dose spiral CT of chest scanning for screening of lung cancer 胸部DR与低剂量螺旋CT扫描在肺癌筛选中的应用价值
Hard dots: Half-tone sots produced either by contact or by direct laser scanning. 硬点:由接触复制或由激光直接扫描而得的半色调点子。
The determination of wood density using direct scanning with X-rays 用直接X射线法测定木材微密度
The direct observation by scanning electron microscope and the analysis of corresponding physical property displays that the micro-pore structure has an obvious positive correlativity with the porosity and the permeability of reservoir rock. 通过扫描电镜的直接观察和对应的孔渗物性分析揭示了微观孔隙结构与岩石孔渗性能呈良好的正相关关系。
As an important branch of Rapid Prototyping ( RP), Direct Laser Metal Sintering ( DLMS) is used for manufacturing metal parts by scanning metal powder based on the process of Selective Laser Sintering ( SLS). 直接激光金属烧结技术基于选择性激光烧结快速成形工艺机制,采用粉末逐点熔化的扫描方式,对金属粉末材料进行直接激光烧结成形制备金属零件。
Now the existing direct volume CT methods face two difficulties: first, how to get the projection data to reconstruct the 3D image exactly, including whether the scanning structure is practical; 目前直接体积CT主要存在两大困难:一是如何获得三维图像精确重建所需的投影数据,包括扫描方式的可实现性;
This paper proposed a novel scanning structure of direct volume CT, which adapts planar scanning and point detecting, called reverse geometry volume CT. 提出了一种新颖的直接体积CT扫描结构,即采用面状扫描与点状探测的倒置扫描结构。
Using DDS ( Direct Digital Synthesizer) technique under control of single-chip computer, electronic-tunable wavelength scanning is realized. 系统采用计算机控制下的直接数字频率合成(DDS)技术,实现电调谐波长扫描。
3-D Direct Matching Interpolation for Rotary Scanning Echo-cardial Images 旋转扫描超声心脏图像的三维直接匹配插值
The direct sign of CT scanning is that a soft-tissue massis caused by the disk in the vertebral cannal. CT图像上的直接征象为椎间盘向椎管内突入的软组织块影。
On Direct Image Reconstruction Algorithm for 3D-Scanning CT CT图像三维直接重建算法研究
A Research on Direct 3-D Reconstruction Algorithm Used in Cardiac CT Scanning CT心脏扫描直接三维重建算法研究
Two experiments on direct transmission of two-dimensional images by optical fibers without any electronic scanning nor photo-electronic conversion are presented. 本文介绍了二个既无电子扫描,又无光电转换,由光纤直接传送图像的实验。
Research of Direct Volume CT with Point Detectors and Trough-like X-ray Source Scanning at Two Positions 基于点探测器和柱面源双位置扫描的直接体积CT的研究
Not only from direct scanning images but from reconstruction images, we could see that the movement of sublimation interface was a three-dimensional move mode, it contracted to the centre of the material. 从直接扫描图像和重构图像,均可看到升华界面的移动是一个立体的移动,由它所包裹的冻结区逐渐向物料几何中心收缩。
Permanent magnetism direct current generator without brush drives the reflector with ten surfaces to line scanning, and the stepper motor drives single reflector to achieve television video field scanning. 永磁无刷直流电机驱动等10面体旋转反射镜实现电视图像的行扫描,步进电机驱动单面反射镜实现电视图像的场扫描。
After pre processing, the technique of direct 3D interpolation for rotational scanning images was used to convert the original rotary scanning images into regular volume data. 然后,根据心电及角度信号提取正确原始切片图像,进行预处理,并利用三维直接匹配插值方法对旋转扫描超声心动图像进行插值,获得规则体数据。
Direct Observation of Epitaxial Growth of YBa_2Cu_3O_ ( 7-δ) Thin Films on SrTiO_3 ( 001) Vicinal Substrates by Scanning Probe Microscopy SrTiO3斜切基片上外延生长YBa2Cu3O(7-δ)薄膜的扫描探针显微镜研究
Thermal hysteresis activity of antifreeze protein solution a direct differential scanning calorimetric measurement 差示扫描量热法直接测定沙冬青抗冻蛋白的热滞效应
My research item-the laser scanning system at a high speed utilizes permanent magnetism direct current generator without brush and the stepper motor to drive reflector achieving television video scanning. 我所研究项目&激光高速扫描系统就是利用了永磁无刷直流电机和步进电机驱动反射镜实现电视图像的扫描。
By using the data of direct solar radiation, we can do pre-processing the extinction depth, optical depth of aerosols, total water content of atmosphere column, total content of ozone and the data of sky scanning can calculate size distribution and phase function of atmospheric aerosol. 利用CE-318测得的直接太阳辐射数据可以反演计算大气透过率、消光光学厚度、气溶胶光学厚度、大气水汽柱总量和臭氧总量;天空扫描数据则可以反演大气气溶胶粒子尺度谱分布及气溶胶相函数。
Electrodeposition of Sn-Ag-Cu alloy on Fe or Cu substrate is employed on a direct current power supply. Scanning electron microscopy was used to observe morphologies of coatings and X-ray fluorescence was used to analyze compositions of coatings. 采用直流电沉积方法在铁、铜基体上电镀Sn-Ag-Cu合金,采用扫描电子显微镜观察镀层微观形貌,采用X-射线荧光光谱仪分析镀层组成。
Pre and postoperative examinations included slit-lamp examination, direct and indirect ophthalmoscopy, electroretinogram ( ERG), B-scan, histopathology, and scanning electron microscope ( SEM). 术前及术后检查包括:裂隙灯、眼底镜、视网膜电流图(ERG)、B超、光镜及电镜等。
Large power semiconductor direct modulation technique plays a key role in in laser scanning, laser ranging and laser communication, the result of the modulation effects direct relates to the the semiconductor laser and modulation techniques. 大功率半导体直接调制技术在激光扫描、激光测距和激光通信中起着关键作用,其调制效果的好坏与半导体激光器和调制技术有着直接关系。
Industrial CT technology has the characteristics of direct, precise, nondestructive, etc. Its principle is that we can get main faults projection value through scanning the workpieces and then reconstruction fault images through a certain images reconstructed algorithm. 工业CT技术,具有直观、准确、无损伤等特点。其原理主要是:射线通过扫描工件得到断层投影值,由图像重建算法重建出断层图像。