Hitachi MRI Airis I .3 Tesla                                    
Hitachi MRI Airis II .3 Tesla                                     


system Highlights: bullet Permanent Open Magnet: 0.3T bullet Software version: 4.5U bullet Options: bullet Phased Array bullet Cardiac Gating bullet MRA bullet Diffusion bullet Fat Suppression bullet Coils: bullet CTL, bullet Head, bullet Extremity, bullet Cervical, bullet Body (Medium) bullet Body (L) bullet Body (XL) bullet Shoulder bullet Neck Specifications: The Hitachi Medical Systems America, Inc. Magnetic Resonance Imaging system, AIRIS II, is a high performance, premium open MR scanner. AIRIS II combines a 0.3 Tesla field strength and advanced permanent magnet technology for outstanding image quality. It has an award-winning open gantry design that provides easy access from all four sides and offers the patient a comfortable environment. AIRIS II has an extremely fast and powerful 15 mT/m gradient system for enhancing day-to-day clinical performance and for specialized, emerging technologies. Its digital RF system, both the 4-channel quadrature transmitter and the Dual QUAD receiver, provides high sensitivity and maximum anatomical coverage. AIRIS II has the extended throughput of a RISC-based, 64-bit UNIX platform workstation and an easy-to-use OpenWindows-based graphical user interface. The system is extremely cost-effective and easy to site in as little as 375 sq.ft. The AIRIS II configuration includes: · Open Magnet · Gantry and Patient Handling System · Gradient System · RF System · RF Receiver Coil Set. · Computer System · Operator Console · Operating Software · Imaging Capabilities · Image Processing/Display/Analysis · Archive/Interface/Network AIRIS II OPEN MAGNET The magnet provides excellent performance for whole body imaging. The innovative open design has an appealingly small footprint, · Operating field strength: 0.3T · Magnetic field orientation: Vertical · Homogeneity: +/- 2ppm (FWHM over a 20cm DSV) · Shimming: Passive, as well as three axis per-patient · Magnet weight: 34,600 lb. · Five gauss fringe field: 6.6 feet lateral and 8.2 feet both longitudinal and vertical from the magnet’s center AIRIS II GANTRY AND PATIENT HANDLING SYSTEM The gantry design, incorporating a vertical field magnet, provides a spacious appearance and a comfortable environment for the patient during scanning. · Magnet opening: 43cm vertical height · Off-center post placement for unrestricted access from all four sides · Extra-wide (80cm) table with 500 lb. weight capacity · Power driven table movement in all three directions; vertical, horizontal and lateral · Manual table-top emergency release · Laser light localization in three planes for accurate patient positioning · Start scan function available at front, sides and rear of magnet gantry · Patient intercom · Padded table-top AIRIS II GRADIENT SYSTEM The HITACHI-designed and built gradient system provides sub-millimeter in-plane spatial resolution and thin-slice imaging. The pulse-gradient driver’s state-of-the-art digital electronic technology provides high reliability and efficient operation, · Gradient strength: l5 mT/m, maximum · Slew rate: 20 T/m/s, maximum · Completely air cooled gradients · Shielding: Passive, to neutralize the effects of eddy currents · Eddy current compensation: 1/10th factor, maximum · Soft Sound gradients offer extremely low acoustic noise for added patient comfort AIRIS II RF SYSTEM The RF system provides for highly reliable transmission of RF and reception of MR signals. An ultra low-noise pre-amplifier and pre-matched RF coil electronics provide for maximum performance. · 4 channel QUAD transmitter for uniform excitation · 5.0 kw transrnitter power amplifier to accommodate even the largest patients · 0.3 dB ultra-low noise pre-amplifier for high SNR · Actively decoupled RF receiver Coils · Linear and quadrature detection · Auto tuning AIRIS II RF RECEIVER COIL SET Open QUAD Head Coil This spacious quadrature coil design provides high signal-to-noise, which is especially useful for efficient routine brain imaging, as well as high-resolution, thin-slice imaging. QUAD Extremity Coil This effective quadrature coil uses a high performance quadrature/solenoid design to provide high signal-to-noise, which is especially useful for high resolution imaging of detailed knee anatomy. Large Extremity Coil A high sensitivity design to optimize imaging of shoulders, large knees, thighs and pediatric heads. Volumetric Neck and Extremity Coil A high sensitivity solenoid coil for neck and extremity imaging applications. This volumetric coil provides high signal-to-noise and a uniform field of view within the coil’s 20 cm diameter. Medium QUAD Flexible Spine and Body Notch Coil This medium spine and body coil (120cm in circumference) combines quadrature RF technology with solenoid coil design for high quality spine and body imaging. The wrap around features offers uniform signal intensity within the selected field-of-view, along with an extended longitudinal coverage for comprehensive lumbar or thoracic spine imaging. Patient comfort and fit is enhanced with the notched, flexible design. Large QUAD Flexible Spine and Body Notch Coil This large spine and body coil (150cm in circumference) combines quadrature RP technology with solenoid coil design for high quality spine and body imaging. The wrap around features offers uniform signal intensity within the selected field-of-view, along with an extended longitudinal coverage for comprehensive lumbar or thoracic spine imaging. Patient comfort and fit is enhanced with the notched, flexible design. AIRIS II COMPUTER SYSTEM The Hitachi designed computer system was developed for use by a single operator. The state-of-the-art performance and graphic user interface (GUI) allows for rapid system operation. · Host CPU is a 64 bit, RISC-based UNIX processor · 512 Mbytes memory · Additional processors for pulse sequence control, data acquisition, image reconstruction and image processing · <0.ls reconstruction time (256 x 256) · Easy-to-use Openwindows-based GUI · Multi-tasking operating environment AIRIS II OPERATOR CONSOLE The control console provides for straightforward operation through the use of optimized ergonomic component design. · 21” high resolution color monitor designed and manufactured by HITACHI · Mouse input for rapid interaction · Keyboard input for direct alpha-numeric response · Control panel for patient intercom and emergency stop AIRIS II OPERATING SOFTWARE The operating software configuration allows for easy access to all operator functions including scanning, reconstruction. display/analysis, and archiving. · Scan Task Card o Scan protocol selection o Slice and pre-saturation positioning o Display of reconstructed images · Viewport Tool Maneuvering of images such as window/level, cine, ROI and measurement · 2D Processing Task Card Performs 2D post-processing functions including Adaptive Reconstruction and edge enhancement · 3D Processing Task Card Performs 3D post-processing functions including MPR and MIP · Analysis Task Card Supports quantitative analysis features · Maintenance Task Card Supports specialized procedures to insure high image quality AIRIS II IMAGING CAPABILITIES The image acquisition software provides multiple slice imaging, with the flexibility of user-selectable imaging parameters. · Automatic Per-Patient Prescan Set RF power Set frequency Set receiver gain Set receiver tuning Perform auto-shim · Image Plane Selection Transverse, sagittal and coronal Single and double oblique angles Multiple slice, multiple angle · Acquisition Features 2D multislice with contiguous or gapped slices (up to 256 slices) 3D single or multiple slabs (up to 32) User variable image matrix (64-512 x 64-512) Maximum of 4 echoes for multiecho sequences 20 slice thickness of 2mm -100mm 3D slice thickness of 0.5mm - 5mm · Standard Pulse Sequences 2D Spin Echo (SE) 2D Inversion Recovery (IR) 2D STIR 2D FLAIR 2D Gradient Echo (GE) 2D Dual Slice 3D Spin Echo (SE) 3D Inversion Recovery (IR) 3D Gradient Echo (GE) · Steady State Pulse Sequences 2D SARGETM (SG) 2D PP-Spoiled SARGE (RSSG) 2D Time-Reversed SARGE (TRSG) 3D SARGE (SG) 3D RF-Spoiled SARGE (RSSG) 3D Time-Reversed SARGE (TRSG) · MR Angiography 2D Time-of-Flight (TOP) 2D TOF with RF Spoiled SARGE (RSSG) 3D Time-of-Flight (TOF) 3D TOF with RF Spoiled SARGE (RSSG) Sloped Slab Profile (SSP) for reducing through-plane flow saturation 2D TOF with walking pre-saturation to highlight either arterial or venous flow Compatible with: Gradient moment nulling for flow compensation Overlapping 3D slabs Presaturation (up to 6) Breath-hold Cardiac gating Peripheral pulse gating Swap frequency/phase direction 2D slice thickness of 2mm -1 00mm 3D slice thickness of 0.5mm - 5mm Variable flip angle Half echo Featuring: High Resolution/High Definition (HR/HO) reconstruction for increased visualization of small vascular structures. Maximum Intensity Projection (MIP) processes 2D and 3D acquired images to calculate projection images with batch or user defined rotations. Includes selective ROI. · Fast Spin Echo 2D Fast Spin Echo (FSE) 2D Fast Inversion Recovery (FIR) 3D Fast Spin Echo (P52) 3D Fast Inversion Recovery (FIR) FSE STIR FSE FLAIR Single contrast (T1, T2 or proton density) Dual contrast (T2 and proton density) Compatible with: Auto bandwidth Gradient moment nulling for flow compensation User variable image matrix (128-1024 x 128-512) 2D slice thickness of 2mm -100mm 3D slice thickness of 0.8mm - 5mm Presaturation Rectangular FOV Off-center FOV Featuring: User variable echo factor User variable interecho spacing · Protocol Enhancements (compatible with various pulse sequences) Variable bandwidth Auto bandwidth No frequency/phase wrap Swap frequency/phase direction Presaturation (up to 6) Rectangular FOV Off-center FOV Gradient moment nulling for flow compensation Cardiac gating Peripheral pulse gating Variable flip angle Half scan Half echo AIRIS II IMAGE PROCESSING/DISPLAY/ANALYSIS Rapid image handling and precise image manipulation is enabled with the high performance AIRIS II computer system. · Image Display o Display matrix: 1280 x 1024 o Variable window level and width adjustment o User pre-set window level and width o Image acquisition annotation o Multiple image display o User selectable image layout o Reverse Image · Image Processing o Magnify image o Rotate image o Edge enhancement with other post processing algorithms o Background noise reduction (BNR) o Cine and multi-image cine · Image Analysis o Distance measure o Angle measure o Line profile plot o Region of interest (ROI) o Histogram · Adaptive Reconstruction For enhanced image signal to noise. Adaptive Reconstruction can be programmed as part of image acquisition process and is user selectable from a predefined set, or can be executed as a 2D post-processing task · Maximum Intensity Projection (MIP) Processes 2D and 3D acquired images to calculate projection images with batch or user defined rotations. Used, for example, with MRCP and MRA. · Expanded Multi-Tasking The AIRIS II multi-tasking provides simultaneous scan and reconstruction capabilities. This feature increases Throughput during multiple acquisitions by eliminating the time interval associated with reconstruction. Other multi-tasking features include image review, prescribe ahead scan set-up, archive, filming MPR, MP and network transfers (optional). AIRIS II ARCHIVE/INTERFACE Integral to the AIRIS II operating system is the support of short and long term archive and digital interface for filming. · Image Archive Magnetic disk: 4 GB storage capacity for over 9800 images (256x256) Optical disk: 2.6 GB re-writeable storage capacity for over 17,000 images (256x256) · Interface Digital output and host control of laser imager