MicroMR-25 mini MRI system

• Software operation based on Windows operation system. Center frequency and the width of 90 degree pulse and 180 degree pulse can be adjusted automatically.
• Professional industry control computer as spectrometer platform, it makes the instrument more stability.
• The PSG in spectrometer can realize multi pulse sequence function.
• Independent innovation NMdigI spectrometer can make sure the instruments’ high stability and powerful function.
• The spectrometer system which can be even used in human imaging, it including PSG, DDS, DAC and ADC. It can inspire multi slices, not only can realize the normal 2D/3D imaging, but also can realize the 2D random angle multi-slice imaging.
• 3D imaging function, image re-construction function.
• Oriental big magnet, which ensures the steady, reliability, fidelity.
• Openness MRI software, friendly operating interface, adjustable parameters, can collect and save the K space original data, and the FFT interchange of K space data can be done manually.
• High power RF amplifier: output peak value > 100W.
• Powerful multi-exponent inversion fitting software is optional, which can do T1/T2/T2* inversion and fitting, correctly measuring different groups’ relaxation time and ratio in one sample.
• In CPMG pulse sequence, the biggest echo wave peak number can reach to 20000, the biggest sampling data number is 1 million, the shortest echo time is 160us, and thus the T2 time can be measuring in a range of 80us to 14s.
• Non-destructive: the excitation pulse electromagnetic wave is lower than only 30 MHz, it won’t hurt the sample any more.
• Operation is convenient and easy: in most test item, the samples do not need prepreparation or only take little time to preparation. In quota test, it only needs six or above six samples.
• Data search is convenient: the huge capacity data base has disparting, classifying, comparing, counting functions, the data can also load in excel to process.
• Good fidelity: standard deviation won’t exceed 0.5%.
• Wonderful imaging quality of small sample, clear sample edge, high organize contrast gradient.
• Customizable: hardware and software can be developed according to customer’s individual needs.
• It can be fitted with variety advanced device, like var-temperature system, var-pressure system.

• Magnet: permanent magnet ,0.51Tesla (21.7MHz H resonance frequency)
• RF field: RF pulse frequency range: 1MHz~30MHz
• Magnet temperature control: ±0.02℃ temperature control precision, temperature setting range:28~35℃,32℃ typically.
• Magnet pole diameter:270mm, magnet pole gap：45mm
• Magnet field homogeneity: 10.0ppm(10mm×10mm×10mm); magnet field stability: frequency draft <200Hz/Hour
• Spectrometer(including PSG, DDS,DAC,ADC)
• 16bit data sampling, digital receiver
• Digital frequency source, directly output the pulse wave as required
• Advanced hardware fitting with pulse sequences programs can realizing complicated experiment.
• DDS:1~30MHz adjusting range, can offer soft pulse sequence whose amplitude and width is adjustable.
• RF Amplifier: peak value output : 100W, linear :99.5%
• RF precision: 0.01Hz
• Receiver plus > 40dB, largest sampling bandwidth > 300MHz
• Signal receive/launch type: digital quadurature detection
• Gradient amplifier’s gradient peak value can exceed 3Guass/cm in X/Y/Z three directions
• In CPMG pulse sequence, the echo wave number can exceed 2 million, the biggest sampling data number is 1 million, the shortest echo time is 160us, and thus the T2 time can be measuring in a range of 80us to 14s
• Big probe coil: 25mm diameter coil(standard); optional coil diameter:18mm, 15mm, 10mm, 5mm
• Effective sample detecting range: 25mm diameter*30mm height
• Imaging quality(18mm diameter standard sample): image linear(x/y/z direction) > 90%, space resoluton:0.10mm;
• Industry control computer as spectrometer platform, based on PCI assembled line, windows operation system. CPU: dual core, Memory: 2G DDR, Harddisk: 250G, Optical driver: DVD_R/W.