In the case when 90 deg. hybrid is applied, the fine adjustment of the phase shift angle can be attained by the adjustment of an isolation resistance value. By this adjustment, accordingly, one side band of the SSB wave is lessened sufficiently and the generation of the spurious emission ...
1) RF transmitter 射频发射 1. Phase coherence betweenRF transmitterand receiver in digital MRI spectrometer was studied. 讨论了一种在核磁共振成像数字谱仪中保证射频发射机与接收机之间射频信号相位相干的方法,该方法在成像脉冲序列执行过程中,同步切换发射机与接收机的频率,并在脉冲序列最后,将发射和接收频率恢...
Transmit/Receive (T/R) Switch and Coil.The currents in the I and Q outputs of the coupler is now headed for the RF-transmitter coils. As scanners may have several possible transmitter coils, electronic switching circuitry is necessary to make sure that current is delivered to the proper coil...
WIRELESS-TYPE RF COIL AND TRANSMITTER FOR LEGACY MAGNETIC RESONANCE IMAGING (MRI) SYSTEMS AND METHOD OF OPERATION THEREOFA transmission apparatus for legacy magnetic resonance (MR) systems including one or more of a radio transmission portion having coupling to an analog RF cable port of the MR ...
3) RF receiver and transmitter 无线射频收发器4) RF CMOS transceiver 射频CMOS收发器5) Transceiver [英][træn'si:və(r)] [美][træn'sivɚ] 射频信号收发器 1. Research on Novel MRI RF Transceiver Based on Software-Radio; 基于软件无线电的新型MRI射频信号收发器研究 更多例句>> ...
11.UART CHIP(Universal Asynchronous Receiver/Transmitter)标准异步接收器/发射器 12.very high frequency receiver testing generator甚高频接收测试发生器 13.receiver input converter接收机设备输入变频器 14.The Designing of 30MHz～512MHz Broadband Receiver RF Front-end30MHz～512MHz宽频带接收机射频前端设计 ...
at least some if not all of the varactors associated with the receive coil are forward biased so as to simultaneously maximize detuning of the receive coil to resonant frequencies removed as far as possible from that of the transmitter coil being tuned while also then substantially reducing the ...
first MRI RF transmitter means connected to said first coil for transmitting RF pulses via said first coil which effect, in said object, NMR flip angles having a magnitude which decreases as a function of distance from said first coil; and ...
This paper describes the first MRI prototype system based on a modified clinical MR scanner, which features whole body imaging at 3T using genuine eight-channel transmitter/receiver (Tx/Rx) technology. 展开 年份: 2006 收藏 引用 批量引用 报错 分享 ...
RF coil, RF signal transmitter receiver, RF signal receiver, and magnetic resonance imaging system for the inferior abdomen For the purpose of providing an RF coil that enables satisfactory imaging of the prostate, the RF coil is composed of a first saddle coil and a second saddle coil. The ...