GE MRI Signa HDxt MRI

 The GE Signa HDxt MRI is a widely used MRI system from GE Healthcare, available in multiple configurations, typically 1.5 Tesla. It's designed for whole-body imaging and is known for its upgradeability and image quality. Here's a detailed list of its main components and equipment.

🧲 System Overview: GE Signa HDxt MRI

• Magnet Strength: 1.5 Tesla (also available in 3.0T variants)

• Bore Size: 60 cm

• Field of View (FOV): Up to 48 cm

• Gradient System: TwinSpeed with 33 mT/m amplitude and 100 T/m/s slew rate (varies by model)

• Software Platform: GE Excite or HDxt software platforms with upgrade options

• RF Channels: Typically 8-channel or 16-channel systems (expandable in some versions)

🧰 Main Equipment and Components

1. Magnet Subsystem

• Superconducting magnet

• Cryogenic cooling system (uses helium)

• Active/passive shielding

2. Gradient Subsystem

• Gradient coils (X, Y, Z)

• Gradient power amplifiers

• Cooling system for gradient coils

3. RF System

• Transmit RF coil (body coil inside bore)

• Multiple receive coils (see below)

• RF amplifiers

• Digital RF chain (DSP, ADC)

4. Coils (Receive/Transmit)

• Head coil (for brain imaging)

• Neck coil

• Spine array coil

• Body array coil

• Knee coil

• Shoulder coil

• Breast coil

• Cardiac coil

• Peripheral vascular coil

5. Patient Handling System

• Patient table (motorized, detachable in some models)

• Table controls (manual and remote)

• Positioning aids and straps

• Emergency release system

6. Computer and Operator Console

• Operating console with dual monitors

• Scan planning software

• Image post-processing tools

• PACS connectivity

• DICOM compatibility

7. Cooling System

• Helium compressor unit (cryocooler)

• Chiller unit (external)

• RF and gradient coil cooling circuits

8. Shielding and Room Requirements

• RF shielded room (Faraday cage)

• Magnetic shielding (if required)

• Quench pipe (for helium venting)

9. Other Accessories

• Ear protection for patients

• Intercom system

• Physiological monitoring system (ECG, respiratory gating)

• Injector pump for contrast agents (optional)

🧪 Applications & Sequences

• Neuroimaging (fMRI, DTI)

• Musculoskeletal

• Body imaging (Abdomen, Pelvis)

• Cardiovascular MRI

• Breast MRI

• Angiography (MRA)

• Diffusion/Perfusion imaging

• Spectroscopy (optional)

✅ Optional Upgrades/Features

• HD gradients (for better resolution)

• Advanced software licenses (e.g., for cardiac or neuro applications)

• Silent Scan (noise reduction technology)

• GEM suite coils (higher channel count and comfort)