MRI：磁共振成像核磁共振成像 (MRI) 使用射频波和强磁场而非 X 射线来提供异常清晰且详细的内脏器官和组织的 2D 及 3D 图片。 |
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MRI：磁共振成像核磁共振成像 (MRI) 使用射频波和强磁场而非 X 射线来提供异常清晰且详细的内脏器官和组织的 2D 及 3D 图片。 |
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设计注意事项Magnetic Resonance Imaging (MRI) is a non-invasive diagnostic technology that produces physiologic images based on the use of magnetic and radio frequency (RF) fields. The MRI system uses powerful magnets to create a magnetic field which forces hydrogen atoms in the body into a particular alignment (resonance). Radio frequency energy is then distributed over the patient, which is disrupted by body tissue. The disruptions correspond to varying return signals which, when processed, create the image. The accurate processing of these signals is key to obtaining high quality images. A key system consideration for the receive channel is high SNR. The return signals have narrow bandwidths with an IF location directly dependent on the main magnet s strength. Some systems use high-speed pipeline ADCs with wideband amplifiers to directly sample the IF, leaving large headroom for post-processing gain by a digital down converter or FPGA. Other systems mix the IF to baseband where lower-speed, higher-resolution SAR and delta-sigma ADCs can be used. For controlling the magnetic and RF energy in the MRI, high-resolution, high-speed DACs are needed. High resolution is required to accurately define the area of the patient to be scanned. High-speed is necessary to match the high IFs being generated by the main magnet. DSPs can be used to provide gradient processor control used for properly controlling the magnets in the MRI system. A DSP can also take care of preprocessing the signal before it reaches the image reconstruction engine. A wide variety of TI products are available for MRI systems and equipment manufacturers, including op amps, DSPs, multi-channel high- and low-speed data converters, clocking distribution, interface, and power management. 应用手册MRI：磁共振成像 最新技术文档
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| 描述 | 器件型号 | 公司 |
| TMS320C6414/C6415/C6416 参考设计 | SPRC137 | Texas Instruments |
MRI：磁共振成像 最新技术文档 
MRI：磁共振成像 最新技术文档
| 培训内容 | 类型 | 日期 |
Technical Overview of the Ultra-low power C5505
TI’s latest TMS320C5504/05 low-power DSPs provide energy efficieny and longer battery life for portable applications such as... |
On-Line Training | On Demand |
Introduction to Stellaris® ARM Cortex™-M3 MCUs
TI's Stellaris MCUs pair the ARM Cortex-M3 core along with advanced communication capabilities... |
On-Line Training | On Demand |
Introduction of the Sitara family of ARM microprocessors
Gerard Andrews provides an introduction to TI's new Sitara ARM microprocessor product family. |
Video | On Demand |
Introduction to Ultrasound Digital Processing
We will give an overview of the various processing blocks that make up a typical medical diagnostic ultrasound system. |
On-Line Training | On Demand |
Demonstration of the Sitara AM3517 graphics capabilities
Demo of the AM3517 graphics capabilities with the integrated POWERVR SGX graphics engine |
Video | On Demand |
