1) multiplanar reconstructions
多平面图像重建
2) Multi-planar reconstruction
多平面重建
1.
Multi-planar reconstruction of multi-slice spiral CT in diagnosis of peripheral small lung carcinoma;
多层螺旋CT多平面重建对周围型小肺癌的诊断价值
2.
Objective To discuss the diagnostic value of stomach tumors with multiphase contrast-enhanced spiral CT scan and multi-planar reconstruction.
目的探讨利用螺旋CT多期增强检查,结合多平面重建对胃肿瘤的诊断价值。
3.
Materials and Methods:47 Patients with obstructed diseases of biliary tract confirmed clinically underwent MDCT and their reconstructed images of biliary tract including multi-planar reconstruction(MPR)images and curved planar reconstruction(CPR)images were compared with those of 50 patients without obstruction and dilatation of biliary tract.
材料和方法:收集47例临床证实的胆道梗阻患者的多层螺旋CT扫描数据并行胆道多平面重建(MPR)与曲面重建(CPR),将50例无胆系疾患又无胆道扩张的CT扫描数据作为对照,分别将两组间的MPR与CPR图像对胆道结构和胆管壁的显示效果以及对胆管系统的显示能力进行对比分析,再对47例胆道梗阻患者的CT胆道重建图像进行回顾性分析进一步评估其对梗阻部位和梗阻原因判断的准确性。
3) multiplanar reconstruction
多平面重建
1.
Clinical application of multiplanar reconstruction and volume rendering with 64-slice spiral CT in the complex midfacial fracture
64排螺旋CT多平面重建和容积再现图像在面中部复杂骨折中的临床应用
2.
Objective To study the value of CT virtual endoscopy(CTVE) and multiplanar reconstruction(MPR) in the diagnosis of small intestinal diseases.
目的研究多平面重建(MPR)及小肠CT仿真内镜(CTVE)对小肠疾病诊断的价值。
3.
Methods:Twenty-six cases of plain CT,enhancement CT scanning and multiplanar reconstruction after the stomach becomes low tense and full of water contrast with the results of gastroscope and operation pathology.
方法:采用低张水充盈法螺旋CT平扫及增强扫描并多平面重建共检测26例胃肿瘤患者,并与胃镜及手术病理结果对照比较。
4) multiplanar reformation
多平面重建
1.
Objective To study the value of multislice helical CT multiplanar reformation to the display of facial nerve canal and the diagnosing of facial paralysis.
方法应用图像重建技术对43例患者面神经管进行多平面重建(MPR)及曲面重建(CPR),并对面神经管各段及第一弯曲、第二弯曲进行测量。
2.
Objective To evaluate the value of spiral computal tomography(CT) with multiplanar reformation in assessing fissure invasion by peripheral lung neoplasms.
目的评估螺旋CT多平面重建(MPR)在周围型肺癌侵犯叶间胸膜方面的应用价值。
3.
Images were reconstructed with methods of shaded surface display (SSD) and multiplanar reformation (MPR).
第一部分 多排螺旋CT及二维、三维重建技术在周围型肺癌中的应用价值 目的:探讨多排螺旋CT(MSCT)及二维(2D)、三维(3D)重建技术对周围型肺癌的诊断应用价值 材料与方法:43例周围型肺癌行MSCT扫描,然后行后处理重建,重建方法包括多平面重建(MPR)及表面遮蔽成像(SSD)。
5) multiple planar reconstruction
多平面重建
1.
Objective:To probe into the practical value of the application of multiple planar reconstruction techniques based on multiple-slice spiral CT images that illustrate anatomic relationship between optic canal and surrounding structures.
目的:探讨多层螺旋CT多平面重建技术(multiple planar reconstruction,MPR)在视神经管区解剖关系的应用价值。
6) MPR
多平面重建
1.
Diagnosis and Treatment of Lumbar Disc Herniation with CT MPR Images:A Report of 30 Cases;
CT多平面重建图像在腰椎间盘突出症诊断和治疗中的应用(附30例报告)
2.
Clinical Applications of 3D Reconstruction and MPR with MSCT in Knee Joint Traumatic Fracture;
多层面螺旋CT三维和多平面重建在膝关节创伤性骨折中的临床应用价值
3.
Objective:To evaluate the significance,excellence and clinacal valuethe of diacrisis of thoracolumbar junction burst fractures by using SCT 3D reconstruction and MPR.
目的探讨螺旋CT三维重建(CT3D)及多平面重建(MPR)对胸腰段脊柱爆裂骨折诊断的优缺点及临床应用价值。
补充资料:平面—多齿极对的磁场特性
平面—多齿极对的磁场特性
magnetic field characteristics of pole pair to plane-pole teeth
P一ngmlon一duoehzJ一du一dee一chong tex一ng平面一多齿极对的磁场特性(magneti〔fieldeharaeteristies of Pole pair to plane一pol。teeth)由平面极和多个齿极组成的磁极对的磁场分布规律。平面多齿极对分为平面一多尖齿极对和平面一多矩齿极对两种。平面一多尖齿极对的磁场力高于平面一多矩齿极对,故多用于强磁场磁选机,主要用于干法盘式磁选机和下部给矿辊式强磁场磁选机;而对分选粒度小于lmm的上部给矿辊式强磁场磁选机,为了便于给料多采用平面一多矩齿极对。平而多尖齿极对如图1所示。齿极附近的磁场非均匀区深度约等于齿距;之半。当极距z>0.55时,离齿极距离y>。.5、区域的磁场接近均匀。沿齿极对称面上的磁感应强度为 By一0 .ssB。(1一K:)。5 巨0.2552一尺1(0.55一夕)2丁‘)5磁场梯度(grad方y)为少 图1平面一多尖齿极对 争一。.5,。。、l(0.5、一,川一、l)。一 Qy 仁0.2552一K,(0.5:一夕)2〕一‘5 磁场力为 (BgradB),=0.25s2B若Kl(0.5:一y)(1一K,) [0 .255,一K,(0.5、一夕)2〕一2式中B。为平面极表面上的磁感应强度,T;K,为系数,当齿距:分别约为1、3和scm时,Kl分别约为0.3、0.55、和0.6。当z>0.5:时,离齿极距离y(0.55的区域内,齿尖角夕一45。~500,齿端圆弧半径r、。.h时,上述三式较准确。 平面一多矩齿极对如图2所示。其沿齿极对称面上的磁感应强度为 李 图2平面一多矩齿极对 By=0 .5950·’5丑。(l一尤1)“5 [0 .355‘“一犬:(0.5,一夕)‘”]一。5磁场梯度(grad召y)为 华一。.45:。75。。、1(。.5:一、)。·5〔1一、1)。5 dy以‘,口J口o三、1、U’J3一y夕、1一八1夕 [0 .355,5一尺,(0.5,一少)’,5]一‘·5磁场力为 (BgradB)y一0.27:’SB居尤1(0.5、一y)“5(1一凡) [0.355‘5一犬,(0.5、一夕)‘5」一2式中B。和,意义同前;K,为系数,当齿距,近似等于1、3和sem时,Kl分别为0.25、0.25、和0.3。对于平面一多矩齿极对,适宜的齿高应大于齿距:,齿宽B和齿槽宽a的适宜比值b/a与给料中磁性矿物的含量断有关。当am>60%时,占/a一2:l,am=30%一60%时,b/a=1:1;am<30%时,b/a=1:2。 (孙仲元)
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