Open MRI System
Oper

Technical Specifications of OPER-0.4 MRI System

Magnet

• Type: Permanent magnet, eddy current free, open C type & self-temperature control
• Field strength: 0.4T±3%
• Field homogeneity:
  • <±2ppm(FWHH)/20cm DSV
  • <5ppm(VRMS)/40cm DSV
• Vertical gap distance: 40cm

Gradient system

Amplifier:

• Field strength: single axis 25mT/m
• Gradient rise time:0.33ms
• Slew rate: single axis , 75.7mT/m/ms
• Nonlinearity: 40cm*40cm*38cm ellipsoid<5%

RF transmitting & receiving system

• Type of transmitter & receiver: Digital
• Frequency range: DC-22MHZ
• Maximum receiver bandwidth: 1.25MHZ
• Pre-amplifier: gain 30dB
• Noise figure: 0.3dB
• RF amplifier: ≥6kw
• RF transmitting coil: panel transmitting coil
• RF receiving coil: quadrature coil

Auto pre-scan function

Auto RF correction, auto frequency lock, auto gain, auto coil identification, auto coil tuning, active shim

Image specifications

• Image types: T1 weighted image, T2 weighted image, T2* weighted image, PD weighted image, diffusion weighted image, fat suppressed image, water suppressed image, Magnetic resonance hygrography (MRCP MRM MRU), MRA
• Field of view: 40mm-400mm
• Acquisition matrix: 64x64-512x512
• Graphics matrix max.: 1024x1024
• Body in 30cm FOV: 1.5mm
• Head in 24cm FOV: 1mm
• Slice orientation: transverse, sagittal, coronal, free oblique, multi-slice & multi-range
• Slice gap: 0-20mm

Pulse sequence

• Spin echo (SE)
• Multi-slice & Multi-echo (MSME)
• Fast Spin Echo (FSE)
• Single shot fast spin echo (SSFSE)
• Multi shot fast spin echo (MSFSE)
• Inversion recovery (IR)
• Short inversion tau IR (STIR)
• Fluid attenuated IR (FLAIR): T1W, T2W
• Inversion recovery fast spin echo (IRFSE)
• Gradient echo (GRE): 2D/3D
• Steady state process GRE (SSPGRE)
• MRA: TOF 2D/3D
• Echo Planar Imaging (EPI)

Image display & post processing

• Image post processing: filter, zoom, cut, text illustration & elimination, image offset, auto adjustment of window length & width
• Image analysis: interested area illustration, distance measurement

Patient Management

• Talkback system
• Patient bed bearing - 240Kg Max.

Computer system

• Main: dual-core processor (≥2.8GHz)
• Network controller: 1000Mbps
• Memory: 2 GB
• Graphics memory: 128MB
• Hard driver: 160 GB
• Removable storage: DVD+RW
• Image reconstruction: (256x256) 285 Frames/s
• 21” TFT monitor with at least 1280x1024 resolution

DICOM 3.0 with compatibility

Download Technical Specifications of OPER-0.4T System(.pdf)

• OPEN MRI
• The MRI systems OPER
• OPER-0.3T System
• OPER-0.35T System
• OPER-0.4T System
• OPER-0.5T System
• Photo Gallery
• Contacts

Oper 0.4