MRI: Magnetic Resonance Imaging

Magnetic Resonance Imaging (MRI) uses radio-frequency waves and a strong magnetic field rather than x-rays to provide remarkably clear and detailed 2-D and 3-D pictures of internal organs and tissues.

Design Considerations
Selection and Solution Guides
Tools and Software

Product Bulletin & White Papers
News Releases & Authored Articles
Similar End-Equipment Solutions

Application Notes
Reference Designs
Support & Community

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Design Considerations

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.

Application Notes (6)

Title	Abstract	Type	Size (KB)	Date	Views
Using TI's Embedded Processor Software Toolkit for Medical Imaging (MED-STK)	Read Abstract	HTM	9 KB	08 Jun 2010	965
Implementation of Affine Warp Using TI DSP	Read Abstract	HTM	8 KB	08 Jun 2010	495
Multicore Programming Guide (Rev. A)	Read Abstract	HTM	8 KB	30 Sep 2009	3085
EEPROM Emulation With the TMS320F28xxx DSCs	Read Abstract	HTM	9 KB	21 Sep 2009	3142
Flash Programming Solutions for the TMS320F28xxx DSCs	Read Abstract	HTM	8 KB	19 Aug 2008	4657
Interfacing SD/MMC Cards With TMS320F28xxx DSCs	Read Abstract	HTM	9 KB	26 Jul 2007	2106

Reference Designs

Description	Part #	Company
TMS320C6414/C6415/C6416 Reference Design	SPRC137	Texas Instruments

Selection and Solution Guides

Selection Guides (4)

Title	Type	Size (KB)	Date	Views
Tri-fold High-Speed and Data Converter literature	PDF	620 KB	03 Jun 2011	3426
Medical Applications Guide 2010 (Rev. E)	PDF	11.6 MB	05 Aug 2010	6555
Medical Imaging Applications Guide (Rev. A)	PDF	5.7 MB	05 Aug 2010	2027
Texas Instruments Embedded Processors for Medical Imaging (Rev. B)	PDF	2.38 MB	08 Jun 2010	2176

Tools and Software

Name	Part #	Company	Software/Tool Type
Code Composer Studio (CCStudio) Integrated Development Environment (IDE) v5	CCSTUDIO	Texas Instruments	Code Composer Studio(TM) IDE
TMS320C6748 DSP Development Kit (LCDK)	TMDXLCDK6748	Texas Instruments	Development Boards/EVMs

Product Bulletin & White Papers

Product Bulletin (2)

Title	Abstract	Type	Size (MB)	Date	Views
TMS320C6670 Breakthrough Performance for Process-Intensive Applications (Rev. B)		PDF	228 KB	09 Jun 2011	1323
TMS320C6671/72/74/78 High-Performance Multicore Fixed- and Floating-Point DSPs (Rev. B)		PDF	208 KB	25 Apr 2011	3909

White Papers (9)

Title	Type	Size (MB)	Date	Views
An overview of TI's Multicore Software Development Kit (Rev. A)	PDF	1014 KB	17 May 2011	2287
KeyStone Memory Architecture White Paper (Rev. A)	PDF	562 KB	21 Dec 2010	1360
TI's new C66x Fixed- and Floating-Point DSP Core Conquers the 'Need for Speed'	PDF	423 KB	09 Nov 2010	1099
Multicore processors bring innovation to portable medical imaging systems	PDF	333 KB	08 Jun 2010	889
TMS320C6472 Six Core DSP: Ideal for High Performance Applications	PDF	180 KB	26 Oct 2009	848
Accelerating the advancement of medical imaging	PDF	358 KB	18 Mar 2009	36
The future of medical imaging	PDF	115 KB	03 Nov 2008	819
See the difference:DSPs in medical imaging	PDF	187 KB	31 Oct 2008	875
HD Transcoding Connects Home Video Applications White Paper	PDF	470 KB	20 Mar 2007	28

News Releases & Authored Articles

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Support and Community

Training & Events

Name	Type	Available During
Multicore Software Development Kit (MCSDK) Online Training This self-paced training course provides an introduction to the various components that make up the C66x KeyStone devices.	On-Line Training	On Demand
Texas Instruments' Training Lab - ARM Tech Conference 2010 This self-paced training course provides an introduction to the various components that make up the C66x KeyStone devices.	On-Line Training	On Demand
TI's C553x DSPs - industry's lowest price and lowest power DSPs TI's breakthrough price for DSPS extends sophisticated signal processing and ultra-low-power into new world of cost-sensitive apps	On-Line Training	On Demand
C66x Multicore SOC Online Training for KeyStone Devices This self-paced training course provides an introduction to the various components that make up the C66x KeyStone devices	On-Line Training	On Demand
Sensor Signal Conditioning and Interface for Medical Explore the various sensor interface techniques and solutions available for medical applications.	On-Line Training	On Demand

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