Tags: HITACHI / MRI / NEW SYSTEM

 

overview

AIRIS II firmly established Hitachi’s reputation as the Open MR leader, equipped with a workhorse low maintenance permanent magnet providing consistent image quality and broad capability.The innovative gantry design and wide patient table continues to deliver a high level of patient comfort. The AIRIS II has continued to maintain high resale value over the last decade and remains a sought-after scanner on the used equipment market.

These units are to be sold installed as turn-key projects.

Download Technical Brochure Here

OVERALL FEATURES

The AIRIS II has the famous award-winning design and a reliable permanent magnet that delivers excellent whole body images with minimal site requirements.

  • Magnet Type ……………………………….. Self-shielded, permanent
  • Magnetic Field …………………………….. Vertical Field
  • Strength ……………………………… 0.3 Tesla Magnet
  • Weight ……………………………. 34,615 lbs.
  • Homogeneity……………………………….. ±2ppm over 20cm DSV (FWHM)
  • Auto Shimming ……………………………. Three-axis per patient
  • Temperature Control ……..Continuous electronic thermostatic control provides high magnetic field stability
  • 5 Gauss Fringe Field ……………6.6 ft. lateral, 8.2 ft. vertical and longitudinal from magnet center

Along with the eddy current free design of the AIRIS II permanent magnet, the gradient system provides submillimeter resolution, thin slices, short TEs, short inter echo spacing, and long ETLs. The efficient gradients employ Hitachi’s SoftSound ® technology for enhanced patient comfort.

  • Gradient Strength ………………………………………. 15mT/m
  • Slew Rate …………………………………………………. 30T/m/s
  • Cooling Method …………………………………………. Air-cooled
  • Acoustic Noise ………………………………………….. < 89dBA

The digital RF system delivers high performance from the QD transmit amplifier and QD transmit coil to the actively decoupled receiver coils, ultra-low noise preamplifier and the digital receiver with 4-channel DualQUAD multiple array technology.

  • Frequency ……………………………….12.7MHz
  • Transmitter Type ……………………..Digital 4-channel, quadrature design
  • Transmit Power …………………………5kW (maximum)
  • Transmit Modulation …………. Digital, amplitude, frequency and phase
  • Detection …………………… Linear, quadrature and multiple array
  • Preamp Noise Figure …………………….. 0.3dB
  • Variable Bandwidth …………….. Digital, automatic and manual
  • Prescan …………………. Set RF power (flip angle), frequency, receiver gain/tuning

The AIRIS II computer system offers users an intuitive, multi-tasking environment utilizing multiple processors to facilitate pulse sequence control, data acquisition and image reconstruction and processing. The computer provides the basis of efficient, single-user operation as all functions including scanning, reconstruction, image display, processing, filming and archiving are controlled through the host computer.

  • Host CPU …………………… 64-bit RISC-based processor
  • Memory ……………………… 1GB
  • Magnetic Disk …………….. 3.5”, 9GB capacity, stores 27,000 images (256 x 256)
  • Optical Disk ………………… 5.25”, 2.6GB (re-writable) capacity, stores17,000 images (256 x 256)
  • Reconstruction Time …….. 0.05s/image
  • Display Monitor …………… Large LCD color monitor
  • Display Matrix ……………… 1280 x 1024
  • Input ………………………….. Keyboard, mouse, control panel
  • Laser Imager Interface ….. Digital, host control