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From Hitachi Medical Systems America Inc.;
the AIRIS II, an entry in the diagnostic category of open MR systems, was designed by Hitachi
Medical Systems America Inc. (Twinsburg, OH, USA) and Hitachi Medical Corp. (Tokyo) and is manufactured by the Tokyo branch. A 0.3 T field-strength magnet and phased array coils deliver high image quality without the need for a tunnel-type high-field system, thereby significantly improving patient comfort not only for claustrophobic patients.
Device Information and Specification
CLINICAL APPLICATION
Whole body
QD Head, MA Head and Neck, QD C-Spine, MA or QD Shoulder, MA CTL Spine, QD Knee, Neck, QD TMJ, QD Breast, QD Flex Body (4 sizes), Small and Large Extrem., QD Wrist, MA Foot and Ankle (WIP), PVA (WIP)
SE, GE, GR, IR, FIR, STIR, FSE, ss-FSE, FLAIR, EPI -DWI, SE-EPI, ms - EPI, SSP, MTC, SARGE, RSSG, TRSG, MRCP, Angiography: CE, 2D/3D TOF
IMAGING MODES
Single, multislice, volume study
TR
SE: 30 - 10,000msec GE: 20 - 10,000msec IR: 50 - 16,700msec FSE: 200 - 16,7000msec
TE
SE : 10 - 250msec IR: 10 -250msec GE: 5 - 50 msec FSE: 15 - 2,000
0.05 sec/image (256 x 256)
2D: 2 - 100 mm; 3D: 0.5 - 5 mm
Level Range: -2,000 to +4,000
POWER REQUIREMENTS
208/220/240 V, single phase
COOLING SYSTEM TYPE
Air-cooled
2.0 m lateral, 2.5 m vert./long
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Quick Overview
NAME
Moire fringes, moire
DESCRIPTION
Superimposed signals of different phases
A moiré pattern is an interference pattern created for example when two grids are overlaid at an angle, or when they have slightly different mesh sizes. The human visual system creates an imaginary pattern of roughly horizontal dark and light bands, the moiré pattern that appears to be superimposed on the lines.
In MRI, the appearance of moiré fringes can be caused by a variety of reasons e.g., inhomogeneity of the main magnetic field caused by a defect shielding ( interference with RF pulses), interferences produced by aliasing, and interferences of echoes from different excitation modes (with different echo times).
Image Guidance
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From GE Healthcare;
a friendly and less confining appearance targets the 7% of individuals who refuse to have an MRI because of claustrophobia. This open MRI system is also up to three times faster than other scanners, therefore the Signa OpenSpeed™ reducing exam time and scheduling
issues. In addition, a swing table provides better access and supports up to 500 pounds.
Device Information and Specification CLINICAL APPLICATION Whole body Standard: SE, IR, 2D/3D GRE and SPGR, Angiography: 2D/3D TOF, 2D/3D Phase Contrast;; 2D/3D FSE, 2D/3D FGRE and FSPGR, SSFP, FLAIR, EPI, optional: 2D/3D Fiesta, FGRET, Spiral, TensorTR 1.3 to 12000 msec in increments of 1 msec TE 0.4 to 2000 msec in increments of 1 msec 2D: 0.8mm - 20mm 3D: 0.1mm - 20mm 0.08 mm; 0.02 mm optional POWER REQUIREMENTS 200 - 480, 3-phase | | | |
• View the DATABASE results for 'Signa OpenSpeed™' (2).
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From GE Healthcare;
the Signa Ovation™ is a patient-friendly open MRI scanner designed not only to handle a typical patient mix, but to accommodate larger patients, patients who are claustrophobic, and others who have difficulty tolerating the close quarters of conventional MR machines.
Device Information and Specification CLINICAL APPLICATION Whole body Standard: SE, IR, 2D/3D GRE and SPGR, 2D/3D TOF, 2D/3D FSE, 2D/3D FGRE and FSPGR, SSFP, FLAIR, EPI, optional: 2D/3D Fiesta, true chem sat, fat/water separation, single shot diffusion EPI, line scan diffusionIMAGING MODES Localizer, single slice, multislice, volume, fast, POMP, multi slab, cine, slice and frequency zip, extended dynamic range, tailored RF TR 1.3 to 12000 msec in increments of 1 msec TE 0.4 to 2000 msec in increments of 1 msec 2D: 1.4mm - 20mm 3D: 0.2mm - 20mm 0.08 mm; 0.02 mm optional POWER REQUIREMENTS 200 - 480, 3-phase MAX. GRADIENT AMPLITUDE 19 mT/m | | | |
• View the DATABASE results for 'Signa Ovation™' (2).
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Developed by GE Lunar; the ARTOSCAN™-M is designed specifically for in-office musculoskeletal imaging. ARTOSCAN-M's compact, modular design allows placing within a clinical environment, bringing MRI to the patient. Patients remain outside the magnet at all times during the examinations, enabling constant patient-technologist contact. ARTOSCAN-M requires no special RF room, magnetic shielding, special power supply or air conditioning.
The C-SCAN™ (also known as Artoscan C) is developed from the ARTOSCAN™ - M, with a new computer platform.
Device Information and Specification
CLINICAL APPLICATION
Dedicated extremity
SE, GE, IR, STIR, FSE, 3D CE, GE-STIR, 3D GE, ME, TME, HSE
SLICE THICKNESS
2D: 2 mm - 10 mm;
3D: 0.6 mm - 10 mm
4,096 gray lvls, 256 lvls in 3D
POWER REQUIREMENTS
100/110/200/220/230/240V
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• View the DATABASE results for 'ARTOSCAN™ - M' (3).
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