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Electronics with in Room Console
电子系统和扫描室操作系统
The SILENT MR electronics include:
· RF sub-system with 1MHz bandwidth per channel
· OpTix RF installed inside magnet enclosures for high SNR digital transmission of data via optical fiber cables to electronics room
· Quadrature birdcage transmit-receive Head coil with split-top design
· High B1 homogeneity quadrature birdcage transmit receive body coil module
· Linux based host computing –Dual CORE Intel Xeon 3505 2.53GHz
· 250 GB data disk for 400,000 image storage capacity
· 4 x dual core AMD Opteron VRE 2.0 for 5400 256x256 fft/s reconstruction speed
· DVD drive
· HD gating with VCG for virtually 100% triggering accuracy
· XGD water-cooled gradient driver (600 amps and 1600 volt)
· iROC in room console with 12.1” LCD with 1024x768 resolution for display of patient waveforms, coil connections and rapid patient set-up
无与伦比的射频系统具备以下特点：
· 业内最高带宽的射频系统（每个通道1MHz）
· 光纤化的射频接收通道安装在磁体里，通过光纤传输产生最佳的数据信号质量
· 正交鸟笼式发射/接收头线圈模块采取顶部分离式设计，信号均匀度高
· 正交鸟笼式发射/接收体线圈模块带来绝佳的B1场均匀度
· Linux系统主机：双核Intel Xeon 3505 2.53GHz
· 250 GB数据硬盘带来40万幅图像存储
· 拥有4片双核AMD Opteron芯片的容积重建引擎（2.0版）带来5,400幅/秒且矩阵为256*256的重建速度
· DVD驱动
· 高质量向量门控保证100%的触发准确性
· XGD水冷梯度驱动器（600 amps和1600 volt）
· 实时操作平台，12.1英寸液晶显示屏，分辨率1024x768，显示病人生理波形，线圈连接状态以及患者扫描状态
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Optical RF system
光纤射频系统
OpTix, an exclusive optical RF technology, enables up to 32 channels of data reception that maximize signal-to-noise ratio (SNR), system stability, and acquisition speed while providing a platform for advanced clinical research and development. By minimizing electrical noise along the imaging chain, OpTix improves overall image quality for your facility and, most importantly, for your patients. The RF technology of the Silent MR 3.0T system integrates the three major components of the information pipeline: (1) Transmit, (2) Receive and (3) Processing. This close integration enables excellent clinical performance and image quality, especially for data-intensive applications. The RF transmit architecture technology consists of a liquidcooled 35kW solid-state RF power amplifier combined with an integrated, bandpass, 16-rung quadrature body coil designed to improve RF and signal homogeneity at 3.0T. At 3.0T, staying within FDA- and IEEC-mandated guidelines for Specific Absorption Rate (SAR) can potentially limit the ability to scan efficiently. Leveraging over a dozen years’ 3.0T experience, GE has overcome these limitations on the Silent MR with an exclusive new synergistic SAR management system called PERFORM 2.0. Combining RF body coil design, optimized pulse sequences, detailed predictive SAR modeling during prescription, and real-time SAR feedback and correction during scanning helps ensure high system performance across all applications, tailored for each patient. The results include fast exams, productivity, patient comfort and improved diagnostic results, scan after scan, patient after patient.
OpTix，独一无二的光纤化射频技术，使信噪比最大化的32通道数据接收系统成为可能，同时它也使系统的综合表现能力以及采集数据速度达到最大化，在此基础之上，高级临床科研真正得以开展并得到保证。通过最小化成像链中的电子噪声，OpTix提高了系统的整体运行质量，更重要的是提高了病人的图像质量。Silent MR 3.0T的射频系统整合了信息通道中的三个部分：(1)发射；(2)接收；(3)处理。这种整合产生了最好的临床表现和图像质量，特别是对海量数据的处理。该系统通过一个液体冷却的35KW射频放大器同时结合了一个一体化的16个针脚正交体线圈的设计大大改善了射频和信号的均匀性。而在以往的3T上，SAR（特殊吸收率）会限制扫描的有效性。正是因为拥有二十多年设计制造使用3T的经验，GE在Silent MR上采用独有的PERFORM 2.0技术完全克服了SAR值的限制，并且与射频体线圈，优化的脉冲序列以及预扫描阶段对SAR值的预估和实时SAR值反馈纠正系统一起保证了系统在每一项临床应用中的优异表现，同时该系统是完全个性化的，即使是对SAR值最敏感的小儿，也不会受到SAR值的任何限制。该系统的其它优势包括快速检查，高生产力，高舒适性以及高诊断率。 |
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SILENT MR uRF Transmit RF System
SILENT MR uRF超快速射频发射系统
Silent MR owered by exclusive 3rd Generation uRFF RF broadwidth technology, the fastest growing applications in MRI are oftentimes the most data-intensive. The Digital RF subsystem provides excellent RF power and uniformity for all image acquisitions. Quadrature coil technology is integrated throughout for excellent imaging performance.
The included Phased Array Kit provides Digital RF channels with BW of 1MHz/channel and the total independent high density RF channels and coils develop into channel to enable quadrature Phased Array imaging.
The XT RF unique design allows compatibility with many coil manufacturers to cost- effectively suite your departmental needs. High performance phased array RF technology allows the user to use phased array or non-phased array coils.
The XT platform for Silent MR is designed to help you manage and profit from this evolution by optimizing every component in the data pipeline-from transmission to reception to processing.
§ Phased array system design provides a state-of-the-art digital transceiver, including new digital pulse controller, digital RF signal generator, multiple digital RF filters and ultra-low noise pre-amplifiers that provide superior SNR for high-resolution imaging.
State-of-the-Art Digital Transceiver Including:
§ New Digital Pulse Controller
§ New Digital RF Signal Generator
§ Digital RF Receiver
§ Digital RF Filter
§ Unique ultra-low noise pre-amplifier design minimizes noise levels to ensure excellent SNR for all surface coil imaging. A wide range of optional surface coils is compatible.
§ uRF, ultra fast RF system, the RF transmission rate of a staggering 1MHz, ZTE ultra fast imaging technology
Silent MR新一代3.0T磁共振系统采用全新的第三代uRF 超快速射频系统，先进的全数字化射频系统和射频发射/接收技术为快速得到高质量的影像质量提供了硬件基础。
多通道可扩展相控阵线圈硬件平台可以实现全数字化射频通道采集，每个射频通道带宽可达1MHz。不但可以得到充分的信息，而且大大加快了采集速度。
Silent MR独特的射频系统设计有着独一无二的充分兼容性，使用者可根据自己的需要选择配置一些其他厂家生产的特殊线圈。
§ 相控阵系统设计提供了全数字化的发射，包括新的数字脉冲控制，数字射频信号发生器，多数字射频滤波和超低噪声的一体化前置放大，提供了出众的高信噪比高分辨率图像。
§ uRF 超快速射频系统，使得射频发射速度达到惊人的1MHz,实现ZTE超快速成像技术
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SILENT MR site collector
SILENT MR扫描室操作系统
Silent MR In-room operator console (iROC) simplify exam preparation and reduce the time between patients with the Silent MR 3.0T optional high resolution, color in-room operator console. By consolidating all controls into one place, the iROC provides real-time feedback to the user to help ensure that any necessary changes in patient setup are quickly and clearly related back to the user. The iROC also enables the user to visualize cardiac and respiratory waveforms directly in the exam room – eliminating the need for the technologist to leave the room and improving the patient experience. Mounted on the front of the magnet, the display provides real-time interaction with the scanner and the host computer. The user has direct control or selection of the following:
· Display of patient name, ID, study description
· Display and entry of patient weight
· Display and entry of patient orientation and patient position
· Cardiac waveform display and EKG lead confirmation with gating control: trigger select, invert and reset
· Respiratory waveform display
· IntelliTouch Technology landmarking
· AutoStart – initiate the scanner to automatically acquire, process, and network images
· Display connected coils and coil status
· Display of table location and scan time remaining
· Screen saver
The iROC simplifies patient workflow by reducing the time burden of today’s most challenging exams. Together, the significant advances of the Silent MR 3.0T improve care by enabling technologists to help maintain their focus where it is needed the most – on the patient.
Silent MR 室内操作平台(IROC)简化了检查准备流程，减少了检查准备时间，并且为操作者提供了实时反馈，从而确保关于对患者建立检查过程中的任何必要的改变都可以清晰而迅速的反映给操作者。IROC还可以直接看到心电波形和呼吸波形，从而使操作者没有必要离开磁体间。IROC位于磁体前方的最上方，该界面提供扫描仪和主机之间的直接联系，操作者可以直接控制或选择使用如下功能：
· 显示患者的姓名，身份证号等个人信息
· 显示并输入患者的体重
· 显示并输入患者头先进还是脚先进以及患者的体位
· 显示心电波形和EKG引导下的门控：如触发方式选择，反转和重置等功能
· 显示呼吸波形
· 智能接触技术定位
· 自动开始—初始化扫描仪，自动获取，进床和网络摄像
· 显示连接好的线圈状态
· 显示扫描床位置和扫描剩余时间
· 屏幕保护程序
实时操作平台(IROC)简化了患者的检查流程，减少了磁共振检查时间，同时，它帮助医护人员将他们的注意力完全放在患者身上。 |
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SILENT MR Insert Magnet assembly
SILENT MR嵌入式磁体系统
Insert magnet technology is another revolution in the development of magnetic technology, breaking the traditional magnetic resonance with sleeve type structure by 3D laser engraving, molding technology, the formation of the tank wall embedded in the magnet, the gradient and RF system and the magnet can be implanted within the magnet, increasing, gradient, RF link between tightness, reduce system vibration the interference caused by noise.
The compact superconducting Insert magnet offers uniquely contoured system enclosures with following features:
· Actively shielded 3.0T magnet
· 18 super conducting shim coils offer superb homogeneity
· Patient bore 70 x 70 x 70-cm in-bore ventilation for high patient comfort
· K4 zero boil-off
嵌入式磁体技术是磁体技术发展的又一次革命，突破传统磁共振采用套筒式结构，通过3D 激光雕刻成型技术，在磁体内壁形成嵌入式槽体，使得梯度与射频系统可内植入与磁体内，增加了磁体、梯度、射频间的链接紧密度，减小系统震动引起的噪声干扰。
业内最紧凑设计的超导磁体提供了独一无二的简洁外观并具有以下特点：
· 主动屏蔽3.0T磁体
· 18组超导匀场线圈提供卓越的磁场均匀度
· 患者检查孔道长宽高分别为70 x 70 x 70cm，内置通风系统，患者舒适度最佳
· 4K冷头，零液氦
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Hollow Copper gradient module
中空内冷梯度模块
· 44mT/m peak amplitude and 200T/m/s performance
· Enhanced Silent technology for lower acoustic noise GE
· exclusive high fidelity technology ensures minimal error between input and output waveforms to ensure highest image quality
· in EPI 1.2 ms TR at 128x128 matrix
· 最大梯度场强：44mT/m；最大梯度切换率：200T/m/s，两者同时达到
· 增强版的Silent技术更进一步降低噪声
· XRM梯度模块保证最大程度消除输入与输出波形的误差，从而达到最佳图像质量
· 最短TR时间1.2ms（EPI，128x128矩阵）
As MR applications continue to evolve, higher performance levels are required of the MR gradient subsystem. Advanced applications such as in/out of phase breath-held abdominal examinations at 3.0T and spectroscopy rely heavily on the MR gradients to produce consistent and reliable high quality data. Equally important is the ability of the gradient to manage thermal challenges, gradient induced noise and peripheral nerve stimulation limits (dB/dt). At the heart of the Silent MR system is a newly designed whole-body gradient coil – the eXtreme Gradient Module(XRM) – and high-power amplifier – the eXtreme Gradient Driver (XGD). Together, the XRM/XGD deliver a 44mT/m gradient field on each axis (X, Y, & Z) simultaneously to maximize gradient amplitude and slew rate at of 200 T/m/s, yielding a zero to full-scale rise time of 220μ.
随着磁共振技术的不断发展，磁共振梯度系统需要更高的性能。高级应用如双回波屏气腹部检查以及波谱成像依赖于梯度系统的高性能才能产生一致的和可靠的高质量数据。同等重要的是梯度系统如何管理热效应，以及梯度噪声和周围神经刺激征带来的挑战，Silent MR全新设计了全身梯度线圈—称之为XRM梯度线圈以及高能梯度放大器—称之为XGD，在达到了各轴44mT/m梯度场强的同时达到了业内最高的200T/m/s的梯度切换率，爬升时间为220微秒。
This also minimizes coil inductance to provide the proper current density for peak performance level. The result is a gradient subsystem that serves today’s demanding clinical applications while providing an uncompromised platform for the development of future applications. To accommodate for the variation in AC/DC resistance, the Silent MR’s XRM gradient coil utilizes a unique water-cooled thermal-electrical cooling circuit that is five times more efficient for extracting heat from the system. Similarly, the Silent MR’s XGD driver incorporates digitally controlled feedback, switching-optimized power generation devices and direct-cold plate heat transfer technology to manage the thermal load within the amplifier.
该梯度系统也最大程度消除了线圈感应带来的影响，从而在峰值时有合适的电流强度。它满足所有的应用需求。为了调节直流交流的阻抗强度，Silent MR XRM 梯度线圈采用了独有的水冷热电冷却循环系统，该系统散热效率较其它产品相比提高了五倍之多。同样，Silent MR XGD 梯度放大器将数字化的反馈控制，配电优化的电力生成装置和直冷热交换板有效的整合在一起，合理的控制了梯度放大器的最大热负载。
As a consequence, the thermal management approach maximizes system performance by 60 percent and improves subsystem reliability by a factor of 10.Enhanced gradient performance does not translate into increased acoustic noise on the Silent MR. The system architecture is designed to minimize the mechanical interactions within the magnet that generate acoustic noise. Improved gradient subsystem linearity can impact the rate at which the magnetic field is switched (dB/dt) due to peripheral nerve stimulation limits. To address this issue, the SILENT MR incorporates an automated gradient pulse sequence optimization algorithm that minimizes the number of overlapping gradient ramps. This approach enables a slew-rate that stays within peripheral nerve stimulation limits to achieve shorter TEs and TRs. Overall, the SILENT MR’s gradient efficacy is achieved by a design that takes the gradient coil and driver into account as a single subsystem to deliver the performance researchers desire.
因此，完善的热量管理使系统表现提高了60%，可靠性提高了100%。同时，增强的梯度系统并没有带来噪声的增加，完美的系统架构设计最大程度消除了梯度系统与其它子系统之间的干扰与噪声。另一方面，改进的梯度线性提高了PNS效应限制下的dB/dt的比率。为了解决这个问题，Silent MR采用了一种自动优化算法的梯度回波序列减少了重复梯度回波的数目，使得在PNS效应限制内的梯度切换率达到了更短的TEs和TRs。总体来说，Silent MR梯度效率通过这样的设计完全达到了科研工作者的要求。
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3D Automatic calibration gradient module
ACG三维自校准梯度控制系统
ACG (Automatic calibration gradient)Based on the traditional gradient, increased automatic calibration system, feedback system, can automatically capture the gradient error of XYZ three axial gradient, and automatic compensation. To get the most accurate gradient field, support for Silent imaging.
ACG (Automatic calibration gradient)三维自动校准式梯度系统，在传统梯度系统基础上，增加了自动校准闭环反馈系统，可以自动捕捉XYZ三轴梯度上的梯度误差，并自动补偿。获得业内最精准的梯度场，支持Silent 成像技术。 |
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23" Landscape LCD Monitor
23寸液晶显示器
This flat-panel liquid crystal display (LCD) monitor delivers outstanding 1920 x 1200 dot resolution at a refresh rate of 85Hz with 500:1 contrast ratio using a digital DVI interface. This monitor provides large desktop area with auto preview window.
平板液晶显示器分辨率达到1920 x 1200，刷新率为85Hz，对比率为500:1，该显示器提供了更大的屏幕和更大的预览窗口。 |
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Operator console table
操作平台
Wide table designed specifically for the color LCD monitor and keyboard.
宽大型操作台专为大液晶显示器和键盘设计，充分提高操作者的舒适性与便利性。 |
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English Keyboard
英文操作键盘
The keyboard is ergonomically designed to keep your staff comfortable even through the longest shifts. The scan control keyboard assembly has an intercom speaker, microphone, volume controls and emergency stop switch.
键盘为人体工程学设计，长时间操作也不会觉得疲劳。扫描控制键包括交互式扬声器，音量控制钮和紧急停止开关。 |
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Express Patient Table
移动病人承载床
The GE detachable patient table features a mechanism for fast table docking and undocking.
This feature has proven invaluable for patient safety and emergency response whenever patient resuscitation may be required. And by allowing staff to prepare patients outside of the scan room, it avoids wasted scan-room time between procedures and consequently, boost room utilization and departmental productivity.
· Detachable and mobile
· Minimum height 70 cm and maximum 91 cm
· Maximum patient load 227 kg
· Maximum scannable range 205 cm
GE 可分离式扫描床可以快速与磁体分离和结合。
该特点对患者安全和紧急情况下的患者复苏至关重要，同时它允许操作者在控制间之外的地方准备扫描患者，从而避免了控制间里可能浪费时间的操作，最大限度利用了房间的生产力。
· 可分离式移动扫描床
· 床高最低70cm，最高91cm
· 最大患者载重227公斤
· 最大扫描范围205cm
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Vibro-acoustic Dampening Kit
防震动噪声外设硬件包
This kit includes dampening material that can be installed underneath the magnet to significantly attenuate the transmission and gradient generated acoustic noise through the building structures to nearby areas including adjacent rooms.
该系统包括消音材料，安装在磁体下方，能够显著降低发射过程中梯度线圈产生的噪声并将之传送到整机系统之外的区域。 |
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Reconstruction system
重建系统
Reconstruction performance today is challenged by explosive growth in data, and increased computational complexity. The amount of data to be stored and processed continues to increase with the advances in MR system technology. The Silent MR meets that challenge head-on with innovations in reconstruction to take full advantage of computing power by leveraging both software and hardware technology.The Silent MR 3.0T features a powerful volume reconstruction engine (VRE 2.0) that enables real-time image generation, even when massive parallel-imaging datasets are involved. The reconstruction engine features onboard memory and local raw data storage to support and maintain simultaneous data acquisition and reconstruction under the most demanding applications. VRE 2.0 uses 64-bit computing, delivering larger acquisition memory and faster performance. Parallel processing and dedicated network cards provide scalable memory and throughput. The acquisition-to-disk feature automatically expands the memory capacity per the demands of the application.
由于海量数据和磁共振后处理计算过程不断增加的复杂性，重建能力变得越发重要。存储和待处理的数据量由于MR应用的持续发展而持续增加，Silent MR在后处理上的革新完全满足了软硬件的挑战，完全发挥出了计算机的优势。革命性的VRE 2.0引擎完全满足实时成像的图像生成要求，甚至采集大量并行采集图像时也是如此。VRE 2.0引擎使用原位内存和本地原始数据存储器支持并保存实时数据，VRE 2.0引擎使用64位计算模式，实现了更海量的存储内存和更快的后处理速度，并行采集处理和优异的网卡提供了大量的内存和生产力。存储到光盘的一站式模式增强了处理能力，完全满足了应用需求。 |
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SILENT MR ConnectPro Option Key
SILENT MR多功能网络连接协议
ConnectPro is the software that enables the DICOM worklist server class for the Discovery operators’ console, making it possible for the console to query your HIS/RIS by name, modality, or scheduled date, and to download patient demographics directly to the scanner. This may require separate gateway hardware to connect non-DICOM-compatible HIS/RIS systems to the MR system.
ConnectPro是能将DICOM worklist服务器归属于Discovery操作主机系统的软件平台，它能使主机通过检索患者的姓名，检查种类和预约时间在HIS/RIS系统中查询他的情况，并且能在扫描仪内直接下载患者资料。实现这种功能必需独立的网关硬件连接非DICOM兼容的HIS/RIS系统。 |
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SILENT MR Tablet Chair
SILENT MR操作椅
Ergonomic MR physician’s chair can benefit the operator’s health.
根据人体工程学原理设计的操作椅对操作者的健康有利。
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Patient Comfort Module
病人舒适性设计
Dual flared patient bore creates an open facade.Two-way in-bore intercom system allows constant communication between technologist and patient
In-bore fiber track lighting system illuminates patient bore to create friendly atmosphere.In-bore patient ventilation system may be adjusted to comfort the patient during the exam.Head coil mirror offers the patient the ability to see out of the head coil.
两极开放式设计最大程度的增大患者的开放空间双向通话系统方便受检患者和检查人员之间即时双向沟通磁体孔道内灯光系统减轻患者的烦闷感，提供友好的检查环境病人通风系统大大增加患者在接受检查时的舒适性头线圈上配置外视镜使患者在接受检查使可看到外面的世界。
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