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Hitachi Medical Systems Singapore

Hitachi

MRI : OASIS

The Ultimate Patient MRI - Open

OASIS is the most powerful patient-friendly whole body high field open MRI system. The unique two pillar asymmetric gantry design provides the best patient experience in terms of MRI comfort. The vertical field magnet with iron core technology in combination with the newest gradient and RF technology guarantees unmatched image quality throughout all applications.

Easy-to-use operating system and extremely fast image reconstruction engine ensures you a high patient throughput in the current highly demanding clinical environment. The unique open architecture not only meets the current requirements of patients regarding comfort, but also gives access to patients previously not suitable for conventional MRI scans.

Features

  • Highest field strength vertical magnetic field 1.2T open design
  • Open-designed gantry provides a feeling of security and friendliness
  • Covers the following applications: neurology, vascular, and orthopaedics
  • Image quality comparable to 1.5Tesla horizontal bore technology
  • HOSS, RADAR, RAPID, TIGRE, TRAQ, FLUTE, VASC, imaging features
  • Highest patient active comfort technology (PACT)
  • Compatible with such high performance imaging as spectroscopy
  • Exclusively developed high-sensitivity solenoid receiver coils provide high image quality
  • The offset-pillar and floating table shorten the setting time

Software Packages

  • CE-MRA imaging package
  • PEAKS measurement function (Peak artery enhancing k-space filling sequence)
  • DWI package
  • BASG imaging function
  • Black Blood imaging function
  • Water Excitation imaging function
  • RADAR measurement function
  • RAPID measurement function
  • Image centering function
  • Regional Shimming function

Coils


Solenoid receiver coil technology

OASIS ∼ Fusion of a Superconductive magnet and Open design and high-sensitivity coils

OASIS ∼ Fusion of a Superconductive magnet and Open design and high-sensitivity coils

The solenoid receiver coil of the vertical magnetic field system allows high sensitivity imaging of the important center area. The receiver coil for vertical magnetic field which Hitachi has developed originally makes it possible that the sensitivity is high at the center area which is important within a clinical image.

Also, the sensitivity uniformity is good enough and the diameter can be made smaller for fitting better to the examinee with expectation for further sensitivity improvement.

Conceptual diagram of the receiver coil

High sensitivity

The receiver coil of the vertical magnetic field system features its high sensitivity as compared with the horizontal magnetic field system. Particularly, high sensitivity at the center area which is important in clinical images allows providing images with a good S/N ratio.

High uniformity

The solenoid receiver coil has high uniformity and the halation in the neighborhood of the coil which is frequent with the multi-array receiver coil of the horizontal magnetic field system is diminished. As signals of fat tissues on the body surface are hard to be strong, it is especially advantageous to fat suppression.

Rapid imaging

Hitachi's parallel imaging technology ‘RAPID’ is incorporated. Since the RAPID coil based on the solenoid receiver coil has high sensitivity and a high degree of freedom in the imaging direction, imaging time is shortened effectively.

Specifications

  • 1.2 Tesla vertical field MRI
  • Two pillar asymmetric design
  • 270° panoramic view
  • High gradient of 33mT/m and slew rate  of 100T/m/s
  • Zenith solenoid coils
  • 8 channel RF receiver system
  • Fully motorised patient table

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