QI-V3000 is an open type permanent magnetic resonance imaging system developed for pet, which is the development of advanced Shenzhen Qianhai Cutting-Edge Technology Co,. Ltd based on the development of conventional MRI system for many years.
Application areas and custom developed pioneering products.The system has the characteristics of customization, scalability and extensibility, and its whole program reflects the characteristics of the combination of the mature architecture and the special needs of customized development. System occupies a small area, the magnet weight light small size (the weight of 5 tons of magnets, magnet volume: 1.5 meters high * length 1.5 m * 0.8 m wide), easy to install. The system has Low energy consumption, don't need special maintenance.
QI V3000 main technical parameters
1、 Magnet
Type: permanent magnet
Field strength: 0.3T
Constant temperature system: 24 hours of adaptive constant temperature system
Magnetic field uniformity: RMS @20cm DSV<1ppm
Uniform field method: the active uniform field supports the first order active uniform field, which does not support the characteristics of uniform field.
Eddy current: X, Y<0.5%, @10mT/m Z<2.5% no hardware eddy current compensation, magnet special design,
A polar eddy layer. In addition, the software parameters are adjusted to control the gradient emission.
Check net space: 28cm
Magnet weight: 5 tons
2、 Gradient system
Gradient field strength: 25mT/m uniaxial strength. 200 ball linear degree is larger than 95%
Gradient switching rate: 50mT/m/ms
3、 Radio frequency transmission system without monitoring SAR system
Operating frequency range: 5 ~ 30MHz
RF power: 5 kW
The radio frequency coil: the flat plate transmitting coil is arranged in the imaging area.
Composition of two parallel placed flat coils. Uniform region of about 220mm
4、 Radio frequency receiving system supports 4 channel parallel acquisition system
Quadrature coil #1
Quadrature coil #2 receiving coil is currently not configured with 4 channels
Quadrature coil #3
Software coil #4
Software coil #5
5、 Multi-channel digital spectrometer
Timing control: 20ns control accuracy
Digital reception: 50M/sec sampling rate
Digital gradient control: 20bits
Digital radio frequency control: 12bits arbitrary waveform
Ethernet network control: remote operation can be achieved
Digital receive gain control: -10 to 30dB
6、 Imaging parameters
Field of vision (FOV): 100mm ~ 400mm, square, rectangle, the center of deflection of the center of choice of clinical according to sweep
Scan site to determine the scan field of view, such as the pituitary small FOV large matrix, requiring high resolution images.
Image matrix: 64 * 64128 * 128256 * 256512 * 512
Slice thickness: 1mm ~ 30mm
Image segmentation: cross section, sagittal plane, coronal plane, three-dimensional arbitrary angle
7、 Scanning sequence
Spin echo sequence (SE) pet rarely scans the cerebral artery 3D images, if required for clinical
Want to be able to configure
Fast spin echo sequence (FSE)
Inversion recovery sequence (IR)
Short inversion recovery sequence (STIR)
Fluid attenuated inversion recovery sequence (FLAIR)
2D gradient echo (GRE2D)
3D gradient echo (GRE3D)
3D fast spin echo (FSE3D)
8、 Scanning imaging protocol
Three axis orthogonal multi plane positioning imaging protocol
Multi group and multi angle scanning imaging protocol
T1 weighted imaging protocol
T2 weighted imaging protocol
Proton density (PD) weighted imaging protocol
T1 fat suppression imaging protocol
T2 fat suppression imaging protocol
T1 water suppression imaging protocol
T2 water suppression imaging protocol
2D gradient echo imaging protocol (T1, T2 and mixed weighted)
3D gradient echo imaging protocol (T1, T2 and mixed weighted)
9、 Scanning software:
Scanning parameter settings: menu scanning parameters selection, with the function of pre scan
Slice position orientation: the precise location of the scanning position by magnetic resonance image
Choice of imaging method: menu type selection imaging method, can be upgraded to add new imaging method
Imaging parameter setting: interactive parameter input method, intelligent parameter range hint
Monitor the scanning process: the real-time display of the scanning process
10、 Image processing software
Image format: DICOM 3
Image storage and transmission: a comprehensive support for PACS and RIS image storage, transmission and management
Display image maximum resolution: 1024 * 1024
Multi window display: at the same time display 4, 9, 16 images, arbitrary matrix
Window width adjustment: automatic or manual display window width adjustment
Image scan parameters: select the display image scanning parameters, hospital information, etc.
Image text notes: the image of the doctor's own text notes
Image magnification: arbitrary multiple stepless amplification
Image rotation: fixed angle or stepless rotation
Distance measurement: the mouse to drag the real-time distance measurement display
Angle measurement: mouse drag real-time angle measurement display
Statistical analysis of the area of interest (ROI): an arbitrary shape region of interest (ROI)
Laser camera interface: DICOM 3 image output
Image post-processing: multi level image filtering enhancement
Diagnostic report: pre diagnostic report template, real-time editing of the print output (optional)
11、 Computer system
Host: double core processor Intel it TM image workstation reconstruction speed (200 frames / sec)
256 matrix, do not need another server.
Frequency: 2.9GHz
Memory: 2048MB
Hard disk: 500GB
CD: read and write DVD recorder
Image terminal: high resolution 23 inch liquid crystal display
Operating system: Windows (R) 7 professional version of the 32 (Simplified Chinese)
12、 Patient system
Scanning bed: a whole body mobile positioning and scanning bed
13、System input power
Input voltage: 380VAC + 10%, 3 phase
Frequency: 50/60Hz + 1Hz
Power: less than 12KVA