Designing MRI Equipment
Magnetic resonance imaging (MRI) is a medical imaging technique using radio waves and magnetic fields to create detailed cross-sectional images of internal organs and structures within the body. Widely used in patient analysis and medical diagnosis, MRI often reveals different information about bodily structures than can be visualized using other imaging methods such as X-ray, computed tomography (CT) or ultrasound.
Microsemi is well-known for its high-reliability, high-performance solutions. Our medical solutions portfolio is aligned to help you deliver innovative implantable device therapies, diagnostics and monitoring solutions enabling better patient care and quality of life.
Contact your local Microsemi sales office today to find the right technologies and products for your medical imaging design needs.
RF Oscillators for MRI EquipmentMagnetic resonance imaging (MRI) equipment requires a local reference oscillator, in order to serve as a source for all the RF components in the multiple MRI circuit boards. Microsemi's Rubidium MAC (Miniature Atomic Clock) is ideal for medical imaging applications to serve as this local reference oscillator.
Rubidium MAC Advantages for MRIs
SiC Diodes/FETs for MRI Power ConversionSilicone Carbide (SiC) Schottky Diodes and MosFETs offer superior dynamic and thermal performance over conventional silicon power diodes and MosFETs. The table below summarizes the advantages of SiC vs Si power discretes.
Microsemi SiC Schottky Diode Advantages
Microsemi SiC MosFETs Advantages
SiC DocumentationReady to learn more? Contact your local Microsemi sales office today to find the right technologies and products for your medical imaging design needs.
Power ModulesMicrosemi's Power Modules products are a great fit for several MRI subsystems, including Gradient Amplifiers (phase leg IGBTs, as well as buck or boost), AC rectifier Bridges (Diode modules) and high power liner regulators (MOSFET modules). To select the best Microsemi Power Module for MRI power sub-systems, please chose from the selection tables below.
Chopper & Phase Leg IGBT Modules
IGBT Module Technology Selection
Standard Recovery Rectifier Modules
Single and Dual MOSFET Modules for Linear Regulators
Data Integrity in MRIs
Data lines are susceptible to transient surges, and TVS arrays are typically used to suppress these transient surges. In MRIs (large magnetic field) the material used to construct TVS arrays can also be affected, reducing their effectiveness. Traditional TVS Arrays use the copper alloy A194 to make leads stiffer, which is unacceptable in harsh magnetic environments. Microsemi's Non-Magnetic TVS arrays use a different alloy, with 0% iron content, and full compatibility with MRIs. In order to deal with the inherent higher flexibility of the non-magnetic alloy, compared to Iron, Microsemi's non-Magetic TVS arrays use a QFN143 package, which is 100% compatible with the traditional SOT143. In a QFN143 package, the epoxy case prevents the leads from bending. All USBQNM504xxx TVS Arrays support 500W (8/20us pulse), protecting a single line.
Non-Magnetic TVS array selection table
All USBQNM504xxx TVS Arrays support 500W (8/20us pulse), protecting a single line.
RF PIN Diodes
RF PIN Diodes for MRI
Radio-frequency (RF) coils, known also as RF resonators and
End ring resonant/anti-resonant Switching Diodes
Surface Coils: Receive Array PIN Diodes
Loop Array or Strip Array: 4 channels and N x 4 channels
Transmit/Receive Control Boards
Receiver Protection Circuits
MRI RF PIN Diodes Application Notes
RF MosFETs for Magnetic Resonance Imaging
In MRIs, the Larmor Frequency determines the choice of the RF MosFET used in the RF amplifier, according to the MRI field strength.
MRI RF Amplifier MosFET Selection Table
MRI RF RF Amplifier MosFET Application Notes
Ready to learn more? Contact your local Microsemi sales office today to find the right technologies and products for your medical imaging design needs.
FPGAs in Medical Imaging
FPGAs find their usage across most of the medical imaging functions in a wide range of medical equipment’s such as CT Scans, MRIs, 3D Ultrasounds and X-Ray machines. Microsemi’s SoCs and FPGAs with their unique differentiating factors provide an ideal solution for medical applications such as Human Machine Interface (HMI), displays, frame grabbing, video capture and Image processing.
Microsemi FPGA Differentiating Factors in Medical Imaging
FPGA Medical Imaging Functions
For more information on FPGA based Imaging/Video solutions visit Imaging/Video
Medical Imaging FPGA Application Briefs
Solectrix SXoM-SF2 is a high performance, low power, secure and ultra-compact DSP SOM solution based on SmartFusion2 SoC FPGA devices is ideally suited for medical imaging application due to its DSP and high-speed PCIe streaming.