Drive-L MRI Console
The Drive L MRI console is a complete two channel MRI electronics unit which uses MATLAB software for data acquisition.
The Drive-L has well documented interconnections for interfacing it to external gradient and radiofrequency amplifiers for adapting it to larger MRI systems.
The specifications below are for the Research Lab configuration (Drive-L + Magspec magnet). Two software packages are included with the Research Lab instrument, TEACH-m and OpenMATLAB.
The TEACH-m software is a standalone package which allows students to acquire data for a number of nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) experiments.
OpenMATLAB is software which runs in the MATLAB environment and provide full access to all the raw data, pulse programs and data analysis and visualization tools.
The MATLAB environment using openMATLAB makes developing new MRI protocols as easy as 1, 2, 3!
Experiment in MATLAB
The MATLAB environment allows you to program your MRI experiment, acquire the data, interface with other peripherals to fully automate your experiment and create publication quality plots.
openMATLAB for development
The openMATLAB library provided with the Drive-L has many tools to help develop the MRI sequence.
Use the analysis and plotting tools in MATLAB environment to analyze data, and create publication quality charts to present your results.
|# Outputs||4 (4 amplified and 4 differential)|
|Built in gradient amplifier||
4 x 10 W (max 10 V / 2 A per channel, voltage controlled 1.1 Ω
|Port type||4 differential ports
industrial standard ( ± 15 V, Rdiff = 50 Ω, Rcom > 1 kΩ
|Gradient points per TR per channel||1021|
|Gradient system (magspec)||xyz bipolar gradients|
|Gradient strength||xy 0.27 T/m and 0.38 T/m|
|Gradient resolution||16 bit|
|Gradient amplitude resolution||xy 8.5 µT/m z 11.9 µT/m|
|Connection to internal gradient amplifier||RJ-45|
|Connection to external gradient amplifier||
3M mini-delta ribbon; 14 pins (10214-55G3PC) fits into 10114-3000PE together with 10314-52F0-008
|RF TX System|
|Direct digital synthesis RF output||
2 channel 16 bit resolution @ 125 MS/sec (up to 333 Ms/sec)
|Pulse setting resolution||8 ns|
|Pulse phase resolution||less than 0.02°|
|Pulse frequency resolution||less than 0.03 Hz|
|Pulse amplitude resolution||16 bit|
|Pulse duration||8 nsec … 250 sec|
|Phase, frequency and amplitude switching||Zero latency|
|Internal RF amplifier||23 dBm (200 mW) 50 Ω|
|External RF amplifier||any NMR/MRI standard|
|Blanking signal||0 V blank / 5 V activation, 50 Ω|
|Network analyzer mode||X (tuning and matching – Rx/Tx port)|
|Generates completely formed RF excitation pulses as well as high resolution digital control signals||X (tuning and matching – Rx/Tx port)|
|Arbitrary waveform generation||
X (phase, frequency and amplitude of each pulse segment on 8 ns grid)
|Maintains signal coherence between excitation and acquisition systems at all frequencies||X|
|Connection of T/R||
4 x SMB (Rx/Tx, Tx2, Tx/Rx switch, blank)
|AQ RX system|
|Sample Rate of the input signal||
125 MS/sec @ 16 bit (up to 166 MS/sec @ 16 bit
|Maximum samples per acquisition window||
streaming cache 64 kS @ 125 MS/sec (up to 166 MS/s) 16 bit
streaming cache 8 kS @ 15 kHz to 31.25 MHz complex, 2 x 48 bit (128 bit/sec)
streaming bandwidth ~ 20 MB/sec
e.g. info samples @ <= 1 MS/sec depending upon memory
|Acquisition phase resolution||< than 0.02°|
|Acquisition frequency resolution||< 0.03 Hz|
|Acquisition window starting point||8 nsec grid|
|Acquisition window duration||8 nsec to 250 sec|
|Built in variable preamplifier||
5 mV to 500 mV (full scale), NF ~ 3dB @ full scale < 10 mV
100 MHz (up to 600 MHz possible with frequency conversion)
|With signal detection enabled||
15 kHz to 31.25 MHz bandwidth of baseband data or 125 MHz raw ADC data
|Wide-bandwidth input amplifier and A/D converter for undersampling applications||X|
|Autonomously signal-averaging of the baseband data between multiple acquisitions||X|
|Directly captures and digitally demodulates IF/RF signals. The desired baseband bandwidth is user definable through software||X|
|T/R switch output||
SMB (Tx2 active 12 V 50 Ω limited to 25 mA /Tx2 inactive -12 V DC 1.25 kΩ, buffered 1 µF 50 Ω
|External Clock synchronization||
10 MHz; input voltage waveform 0.25 to 2 Vpp (LCVMOS 1.8) input voltage sige waveform 1.5 to 2 Vpp ( 9 dBm ± 1 dBm) internally terminated with 50 Ω.
|Connection to External Clock||SMB|
|Digital I/Os||2V high, < 0.8 V low, input stage 10 kΩ to GND, 0 < Vin< 5.5 V)\n6 outputs (high 3.3 V, low 0 V, 50 Ω, Imax 19 mA)”}”>
6 inputs (>2V high, < 0.8 V low, input stage 10 kΩ to GND, 0 < Vin< 5.5 V) 6 outputs (high 3.3 V, low 0 V, 50 Ω, Imax 19 mA)
Can be mapped (inputs not yet functional)
|Digital i/o connection||
3M mini Delta ribbon (MDR); 20 pins (10220-55G3PC) fits into 10320-52F0-008 together with 10120-3000PE
|Power Supply||12 V < 2 Amps|
|Power supply unit||100-240 VAC, 50/60 Hz, 6.67 Amps|
|Dimensions||27 x 9.5 x 14 cm|
|Required software||MathWorks MATLAB 2016a or newer|