Description
Overview
The GE Discovery MR750w GEM 3.0T sets a high standard for 3.0T wide-bore magnetic resonance imaging. Built to overcome the traditional challenges of 3T systems—such as standing wave/dielectric shading artifacts and patient claustrophobia—it pairs a short, $70\text{ cm}$ flared wide-bore design with MultiDrive RF Transmit technology. This multi-channel parallel RF system automatically regulates signal amplitude and phase to deliver uniform tissue excitation across large body areas.
Integrated with GE’s GEM (Geometry Embracing Method) Suite, the scanner utilizes ultra-lightweight, flexible coils that contour to the patient’s body. Combined with OpTix Optical RF Architecture, which converts analog signals to optical digital data right inside the scan room, the MR750w GEM delivers the signal integrity and contrast required for complex neurological, cardiac, bariatric, and musculoskeletal imaging.
Key Features & Advanced Technologies
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70 cm Flared Wide Bore: Features bright inner-bore lighting, dual-sided table controls, and a flared gantry to minimize patient claustrophobia while accommodating larger or anxious patients.
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GEM (Geometry Embracing Method) Suite: Includes high-density, flexible coils such as the GEM Head/Neck Unit with Comfort Tilt (elevates head/neck position to improve patient comfort and proximity to coil elements) and lightweight Anterior Arrays.
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MultiDrive RF Parallel Transmit: Uses independent RF transmit sources to homogenize the $B_1$ field across a full $50\text{ cm}$ FOV, eliminating abdominal dielectric shading common in traditional 3T scanners.
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OpTix Optical Digital RF: Digitizes signals directly inside the scan room to eliminate cable degradation, providing up to a $27\%$ boost in SNR compared to conventional analog receivers.
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In-Room Operator Control (iROC): High-resolution color display mounted on the front magnet housing allows technologists to verify patient info, adjust sequence parameters, and complete setup directly in the room.
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IntelliTouch Patient Positioning: Eliminates laser alignment steps; technologists simply touch the target anatomical landmark on the table side to initiate scanning in as little as 30 seconds.
Technical Specifications
| Parameter | Specification |
| Field Strength | $3.0\text{ Tesla}$ Superconducting |
| Gantry Bore Diameter | $70\text{ cm}$ Flared Wide-Bore |
| Usable Field of View (FOV) | Full $50\text{ cm} \times 50\text{ cm} \times 50\text{ cm}$ |
| Gradient Performance | $50\text{ mT/m}$ Amplitude / $200\text{ T/m/s}$ Slew Rate |
| RF Transmit Architecture | MultiDrive Parallel Transmit ($B_1$ Shimming) |
| RF Receive Channels | 32-Channel OpTix Optical Digital RF |
| Coil Ecosystem | GEM Suite (HNU with Comfort Tilt, Flexible Arrays, Express Table) |
| Patient Table Capacity | Up to $227\text{ kg}$ ($500\text{ lbs}$) |
| Workflow Interface | Dual-Sided Table Controls + In-Room Operator Control (iROC) |
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