No. | Item | Specification |
One | Equipment Introduction | |
1 | Use | For all parts of the body MRI Scan |
Two | Magnet System | |
1 | magnetic field Strength | 3.0T |
2 | Center frequency | 127.7MHz |
3 | Magnet Type | Superconducting Magnet |
4 | Magnet Material | Niobium-titanium alloys |
5 | Anti-electromagnetic interference | Yes |
6 | Magnet stability | 0.1 ppm/h |
7 | Uniformity of magnetic field | Typical values, V-RMS measurements |
7.1 | 10cm DSV | 0.005ppm |
7.2 | 20cm DSV | 0.027ppm |
7.3 | 30cm DSV | 0.056ppm |
7.4 | 40cm DSV | 0.250ppm |
7.5 | 45cm DSV | 0.460ppm |
7.6 | 50cm DSV | 1.500ppm |
8 | Compensation technology of magnetic field shimming | Yes |
9 | Shim mode | Active uniform field + passive leveling |
10 | Magnet weight (with liquid helium) | 4600kg |
11 | Magnet length (excluding shell) | 160cm |
12 | Patient aperture. | 60cm |
13 | Cooling mode | Liquid helium |
14 | Liquid helium consumption rate | 0 |
15 | Volume of liquid helium | 1450L |
16 | Cold head Type | 4K Cold Head |
17 | 5 Gauss line range | 3.1m x 3.1m x 5.5m |
Three | Gradient System | |
1 | Gradient Control Technology | Full digital real Time |
2 | Gradient Cooling Mode | Water |
3 | Maximum gradient intensity | 46mT/m |
4 | Maxi gradient slew rate | 288T/m/s |
5 | Minimum gradient rise time | 0.159ms |
6 | Maximum gradient field, maximum gradient switching rate and maximum FOV can be achieved simultaneously | Yes |
7 | Max duty ratio | 100% |
8 | Shielding mode | Active shielding |
9 | Gradient working mode | Non-resonant type |
10 | Gradient Noise Reduction Technology | Yes |
Four | RF System | |
1 | Number of independent RF sources | 1 or 2 |
2 | Number of independent RF amplifiers | 1 or 2 |
3 | Each RF source can independently adjust the RF pulse phase, waveform, amplitude | Yes |
4 | RF Transmitter Power | 35kW or 18kW * 2 |
5 | Max RF transmit field | 20μT |
6 | RF Power Amplifier Type | Water-cooled / Digital Interface |
7 | Transmitter Coil auto tuning | Yes |
8 | Number of independent RF channels | 16 / 32 |
9 | RF Receiver Sampling rate | 100MHz |
10 | Receive dynamic range (1Hz bandwidth) | 140db |
11 | Noise coefficient | 0.5dB |
12 | Full digital demodulation and filtering technology | Yes |
13 | RF Energy Monitoring | |
13.1 | Real-time digital RF energy Monitoring | Yes |
13.2 | Real-time digital RF energy accumulation monitoring | Yes |
13.3 | Real-time digital RF energy accumulation monitoring | Yes |
14 | RF receiver coils and related technologies | |
14.1 | Orthogonal transmitting / receiving | Yes |
14.2 | Head-neck coils | 24 Channel |
14.3 | Body Coil | 12 Channel |
14.4 | Spine Coil | 18 Channel |
14.5 | Large Flexible Multi-function coil | 8 Channel |
14.6 | Breast Dedicated coil | 8 Channel |
14.7 | Knee Dedicated coil | 8 Channel |
14.8 | Shoulder Dedicated coil | Optional |
14.9 | Ankle Dedicated coil | Optional |
14.10 | AIT Scanning technology | Yes |
14.11 | Note: coil configuration is subject to the final contract |
Five | Computer | |
1 | CPU | 3.4GHz |
2 | Number of processor digits | 64bit |
3 | Memory capacity | 8GB |
4 | Hard disk capacity | 500GB |
5 | Image storage capacity (512 matrix) | 0.6million |
6 | Display resolution | 1920 x 1200 |
7 | Display size and specifications | 24 inch |
8 | Maximum acquisition matrix | 1024 x 1024 |
9 | Maximum Reconstruction matrix | 1024 x 1024 |
Six | Post-processing interface | |
1 | Software Control camera Technology | Yes |
2 | DICOM 3.0 interfaces and PACS network connections (including print, transmit, receive, query , worklist, MPPs ) | Yes |
3 | Standard Laser Camera Digital interface | Yes |
Seven | Scan parameters | |
1 | X axis Max FOV | 500mm |
2 | Y axis Max FOV | 500mm |
3 | Z axis Max FOV | 500mm |
4 | Minimum FOV | 5mm |
5 | Thinnest layer thickness | 0.1mm |
6 | 2D SE Shortest sequence TR time (128 matrix) | 7ms |
7 | 2D SE Shortest sequence TE time (128 matrix) | 2.4ms |
8 | 2D FSE Shortest sequence TR time (128 matrix) | 7ms |
9 | 2D FSE Shortest sequence TE time (128 matrix) | 2.4ms |
10 | 2D FSE Sequence minimum echo spacing (128 matrix) | 2.4ms |
11 | 2D FSE sequence maximum echo chain length (ETL) | 512 |
12 | 2D GRE Shortest sequence TR time (128 matrix) | 1.0ms |
13 | 2D GRE Shortest sequence TE time (128 matrix) | 0.6ms |
14 | 3D GRE Shortest sequence TR time (128 matrix) | 1.2ms |
15 | 3D GRE Shortest sequence TE time (128 matrix) | 0.5ms |
16 | EPI Sequence minimum echo interval (128 matrix) | 0.57ms |
17 | EPI Shortest sequence TR time (128 matrix) | 4.7ms |
18 | EPI Shortest sequence TE time (128 matrix) | 1.3ms |
19 | Maximum dispersion weighted b value | 10000 |
Eight | Scanning technology and sequence | |
1 | Spin echo sequence (FSE) | Yes |
1.1 | 2d/3d Fast spin echo | Yes |
1.2 | SE sequences measured by tissue relaxation time | Yes |
1.3 | SE sequences with selectable angles | Yes |
1.4 | Single echo, dual echo and multi-echo technology | Yes |
1.5 | Single excitation fast spin echo sequence | Yes |
1.6 | Fat-sat sequence | Yes |
1.7 | Fast Fat saturation Technology | Yes |
1.8 | Water-sat sequence | Yes |
1.9 | Reverse recovery (IR) | Yes |
1.10 | General IR sequence | Yes |
1.11 | FLAIR | Yes |
1.12 | Fast T1-FLAIR | Yes |
1.13 | Fast T2-FLAIR | Yes |
1.14 | Rapid inversion recovery sequence (fat-sat, water-sat) | Yes |
1.15 | Short TI inverse echo water-fat separation imaging | Yes |
1.16 | "True" inversion recovery sequence (contrast imaging of gray-white matter) | Yes |
2 | Gradient echo (2d/3d), including | Yes |
2.1 | Multi-layer gradient echo | Yes |
2.2 | 2d/3d residual magnetization removal gradient echo technology | Yes |
2.3 | 2d/3d residual magnetization gradient echo technology | Yes |
2.4 | Heavy T2 weighted High Contrast sequence | Yes |
2.5 | 3D Gradient Echo Technology | Yes |
2.6 | Fast steady-state progressive gradient Echo | Yes |
2.7 | Super-fast field echo sequence | Yes |
2.8 | Three-dimensional imaging technology | Yes |
3 | Planar echo imaging (EPI) | Yes |
3.1 | Single-excitation planar echo imaging technology | Yes |
3.2 | Multi-excitation planar echo imaging | Yes |
3.3 | Spin echo EPI | Yes |
3.4 | Gradient echo EPI | Yes |
3.5 | Reverse EPI | Yes |
3.6 | High resolution EPI Collection | Yes |
4 | Neuroimaging technology | Yes |
4.1 | High resolution anatomical imaging | Yes |
4.2 | High resolution three-dimensional imaging technology of inner ear | Yes |
4.3 | Full Spinal cord imaging | Yes |
5 | Diffusion imaging technology | Yes |
5.1 | ADC Imaging | Yes |
5.2 | Isotropic acquisition | Yes |
5.3 | Anisotropic acquisition | Yes |
5.4 | ADC Value Measurement | Yes |
5.5 | ADC-map | Yes |
5.6 | Automatic acquisition and processing | Yes |
5.7 | Single-shot EPI | Yes |
5.8 | Multi-shots EPI | Yes |
5.9 | Real-time diffusion imaging | Yes |
5.10 | Automatically generate ADC diagram | Yes |
5.11 | Optional optimization B value | Yes |
6 | Vascular imaging technology | Yes |
6.1 | Time Of Fly Technology (2d/3d) | Yes |
6.2 | Imaging technology of arteriovenous separation | Yes |
6.3 | MTC technology | Yes |
6.4 | Maximum density projection technology | Yes |
6.5 | Variable reversal Angle RF technology | Yes |
6.6 | MIP | Yes |
6.7 | 2d/3d Water Imaging Technology (MRCP, MRU) | Yes |
6.8 | Real-time interactive MIP | Yes |
7 | Artifact removal technology | Yes |
7.1 | Fluid compensation | Yes |
7.2 | Respiratory compensation | Yes |
7.3 | Flow correction | Yes |
7.4 | Regional saturation Technology | Yes |
7.5 | Deconvolution Artifact Removal technology | Yes |
7.6 | Motion Artifact Elimination technology | Yes |
7.7 | Image filtering Enhancement technology | Yes |
7.8 | K Space Noise Reduction technology | Yes |
7.9 | Ring artifact suppression | Yes |
8 | Section-scan technology | Yes |
8.1 | Semi-scanning technology | Yes |
8.2 | Full directional partial coding acquisition technology | Yes |
8.3 | Rectangular FOV acquisition technology | Yes |
8.4 | Three-dimensional overlapping continuous acquisition technology | Yes |
8.5 | Parallel acquisition and reconstruction technology | Yes |
8.6 | Partial echo Acquisition | Yes |
9 | Other imaging technology | Yes |
9.1 | Short TR TE Fast Imaging | Yes |
9.2 | Three-dimensional positioning system | Yes |
9.3 | Positioning technology of radial slice layer | Yes |
9.4 | Scan pause | Yes |
9.5 | Variable Bandwidth technology | Yes |
9.6 | Pre-scanning technology | Yes |
9.7 | Signal noise ratio display function | Yes |
9.8 | Mute Scanning technology | Yes |
9.9 | Real-time interactive imaging | Yes |
9.10 | Real-time localization | Yes |
9.11 | Real-Time Interactive parameter change | Yes |
9.12 | High Resolution imaging | Yes |
9.13 | Combined scan function | Yes |
9.14 | Water Saturation Technology | Yes |
9.15 | Pre-saturated technology | Yes |
9.16 | Maximum saturation zone number | 3 |
9.17 | Parallel saturation Zone | Yes |
9.18 | Adjoin saturation Zone | Yes |
9.19 | Fat saturation Technology | Yes |
9.20 | Signal averaging technology | Yes |
9.21 | Frequency Coding Direction Extended acquisition | Yes |
9.22 | Phase coding direction expands acquisition | Yes |
9.23 | Partial Center scanning technology | Yes |
9.24 | Variable K space Filling method | Yes |
9.25 | K Fast Space Acquisition | Yes |
9.26 | Coil Sensitivity correction technology | Yes |
9.27 | Enhancement technology | Yes |
9.28 | Correction technology of image luminance uniformity | Yes |
9.29 | Automatic Center Scanning technology | Yes |
9.30 | Image reconstruction Technology | Yes |
9.31 | Image interpolation Amplification Technology | Yes |
9.32 | Image Distortion Correction Technology | Yes |
10 | Advanced clinical application packages | Yes |
10.1 | Neuro Imaging software Package | Yes |
10.2 | Body Imaging software Package | Yes |
10.3 | Bone and joint imaging software Package | Yes |
10.4 | Tumor Imaging software Package | Yes |
10.5 | Breast Imaging software Package | Yes |
Nine | The patient examine environment | |
1 | Two-way patient call system | Yes |
2 | Magnetic noise-reducing headphones | Yes |
3 | Aperture Ventilation system | Yes |
4 | Aperture lighting system | Yes |
5 | Embedded display | Yes |
5.1 | Patient monitoring System | Yes |
5.2 | Bedside Patient Control system | Yes |
6 | Patient Emergency call Device | Yes |
7 | Maximum load bearing of inspection bed | 200KG |
8 | Minimum bed height for inspection beds | 62cm |
9 | Maximum speed of horizontal motion of scan bed | 20cm/s |
10 | Scan bed Length | 245cm |
11 | Maximum scanning range | >150cm |
12 | Multi-station stitching | Yes |
13 | Bedside Emergency brake button | Yes |
14 | Bedside Switch | Yes |
15 | Breath gating | Yes |