MR system

Influence of gradient to image quality in MR system

核磁系统中梯度对图像质量的影响

The clinical application of CE-MRA with old low gradient field MR system

低梯度场旧MR机型CE-MRA的临床应用体会

Methods : 1.5T MR system and head quadrature coil were used .

方法：使用1.5T高场MR成像仪及头颅正交线圈。

Evaluation of clinical application of magnetic resonance cholangiopancreatography with 0.5T MR system

用0.5T磁共振仪行磁共振胆胰管成像的临床应用评价

Objective : To assess and monitor the basic performance of the MR system ( Image Quality / system parameters ) .

目的：评价和监测MR系统的基本可靠性能，预防MR系统的衰变。

0 Tesla MR System H ~ ( - 1 ) Clinic MR Spectroscopy of 41 Cases

0特斯拉MR系统脑H~（－1）临床频谱分析41例

Fatty infiltration of the liver : Detection and grading using dual T1 gradient echo sequences on clinical MR system

肝脏脂肪浸润：应用临床MR系统的双相T1梯度回波进行检测和分级

Methods MR-guided microwave thermocoagulation therapy was carried out in 25 patients with liver cancer using a 0.23 T open configuration MR system .

方法利用0.23TMR导引微波热凝固治疗肝癌患者。

Objective Using high field MR system to find if the result of ~ 1H MR spectroscopy ( MRS ) could be influenced by contrast agent .

目的用高场MR仪研究对比剂是否会影响氢质子MR波谱（~1H-MRS）的结果。

Objective To explore the feasibility of reducing dose of contrast agent in3D CE-MRA of lower extremity arteries at3.0T MR system with parallel acquisition technique .

目的探讨使用3.0TMR仪并行采集快速扫描技术进行腹部至下肢动脉三维对比增强磁共振血管成像（3DCE-MRA）中减少对比剂用量的可行性。

Finally , the thesis describes the prospects of MR system , includes ISO / IEC 11179 standards as the basic supporting framework for MR and service registry based on web service .

最后对数字图书馆元数据登记系统的发展趋势进行了探讨，包括元数据登记的标准规范ISO／IEC11179和基于WEBService的服务登记。

Materials and Methods : Thirty four cases of ESS were diagnosed by a MR system . It can be divided into the ⅰ and the ⅱ types , according to the degree of compression of the pituitary .

材料和方法：经MRI诊断为ESS者34例，根据垂体压缩程度分Ⅰ、Ⅱ两型。

Materials and Methods : To have used 0 . 5T superconducting MR system , the diagnostic sensitivity between fast FLAIR technique and T2 weighted spin - echo MR imaging in 65 patients with cerebral infarction were compared and analyzed .

材料与方法：应用0.5T超导MR系统对65例脑梗塞患者分别采用FLAIR技术、快速自旋回波T2加权像（T2WI）进行对比分析。

If the results of arthroscopy or / and surgery were considered the golden rule , the diagnostic sensitivity , specificity , and accuracy of dedicated MR system for meniscal tears were 100 % , 92 % , and 97 % , respectively .

以关节镜或/和手术为金标准，四肢专用MR诊断半月板撕裂的敏感性为100%，特异性为92%，准确性为97%。

These patients include unilateral hip dislocation 34 , bilateral hip dislocation 13 , in total normal hip 34 , dislocated hip 60.MRI studies were performed using a super conductive MR system operating at a field of 2.0 T and in a body coil .

单髋脱位34例，双髋脱位13例；共计正常髋关节34个，脱位髋关节60个。

For different excitation input , a series of experiments are explored to analyze the performance of MR isolation system by his method .

在不同外力激励的条件下，应用该方法对一种金属橡胶隔振器隔振系统进行动态特性的理论分析。

Application of periodic image quality test ( PIQT ) of the MR scanner system ( report of 120 cases )

磁共振成像仪定期图像质量测试的应用（附120例报告）

Materials and Methods : We collected 3 cases of neurofibromatosis type ⅱ proven by surgery and MR imaging system . The cranial MR appearences were reported .

材料与方法：搜集我院行MR检查并经手术证实符合神经纤维瘤病诊断标准者3例，分析其头部MRI表现。

In the control level , based on a hybrid control strategy of sky-hook control and ground-hook control , a semi-active fuzzy logic controller is designed for each support MR suspension system .

在控制级，把天棚、地棚混合控制策略与模糊智能控制策略相结合，设计了1/4车辆垂直振动的半主动模糊智能控制器；

The comparisons of passive isolation control , passive-off control , passive-on control and fuzzy semi-active control show that the roof MR isolation system is a valid and practical intelligent semi-active control system .

本文比较了被动隔震控制、被动-关控制和被动-开控制和模糊半主动控制效果。

Conclusion 3D-VIBE system is superior to other MR imaging system serial in the preoperative assessment of the morphological type , the longitudinal infiltration extent and the tumor resectability of hepatic portal cholangiocarcinoma .

结论3D-VIBE在判断肝门胆管癌形态学类型、胆管纵向侵犯范围和手术切除性等方面优于其它MRI序列。

Design of a New Kind of MR Hydraulic Actuator System

一种新型磁流变阀控系统的设计

Study and Road Test of MR Semi-active Suspension System

磁流变半主动悬架研究及道路试验

MR damper brace system is proposed in this study and the seismic efficacy is also investigated .

本文研究了安装MR阻尼器的高层钢结构框架支撑体系的抗震性能。

Experimental Model of Structure-ER / MR Smart Damper System

结构-ER/MR智能阻尼器系统试验模型

An intelligent fault tolerant control ( FTC ) strategy is investigated for MR semi-active control system with sensor failure .

探讨传感器失效时MR半主动控制系统的智能容错控制策略，以保证传感器发生故障时控制系统仍然具有良好的性能。

Fuzzy intelligent control methods can effectively control MR smart isolation system , its effectiveness , than Passive-off control and the effect of passive isolation good .

模糊智能控制方法能有效控制MR智能隔震系统，其控制效果明显比Passive-off控制和被动隔震的效果好。

The performance of MR intellectual base-isolation system which is a safe and practiced device , is better than that of passive isolation device .

MR智能隔震系统装置的性能明显优于被动隔震装置，是一种安全实用的隔震装置。

The structure and the system principle of the GPS / MR integrated navigation system are introduced . The operating principle and the error compensation of the magnetoresistance are discussed .

详细介绍GPS和磁阻传感器组合定位系统的系统组成、工作原理，并介绍了磁阻传感器的测量原理和误差补偿算法。

Based on the purpose of suppressing the whipping effect of top machinery building of three gorges lift ship structure , roof MR intelligent isolation system is presented .

为了抑制三峡大坝升船机顶部厂房的地震鞭梢效应，提出了用顶部厂房屋盖MR智能隔震层来减小升船机地震鞭梢效应的方法。