Whole-body tomography MRI system uMR Astra

for joint tomographyfor brain tomographyfor cardiovascular tomography

Product Brief
Comfort, complexity, and clinical challenges have long been topics in MR devices. It is difficult to systematically address these issues solely through fragmented comfort improvements and AI innovations. Taking "care" as the core driving force of design, uMR Astra creates comprehensive care experiences for different roles with a new generation of RF design and clustered AI technologies that empower the whole process and all scenarios.

Overview
uMR Astra is a 3 Tesla MRI platform featuring a new-generation RF architecture, an expanded SuperFlex coil family, clustered AI technologies (uAIFI) for full-process AI workflow, and a full-stack artifact solution to support clinicians, technicians, and patients across diverse clinical scenarios.

Features & Benefits

• Care for Patients: Full-size SuperFlex; Full-adaptability wearable coils; Full-sensory comfort design.
• Care for Technicians: Full-process AI workflow; Light-weighted coil workflow; intuitive, seamless operation enabled by uAIFI.
• Care for Doctors: Exclusive full-stack artifact solution; One-stop clinical solutions with high-channel coil combinations for systematic screening and evaluation.

Full-Range Multi-Size SuperFlex Coils
uMR Astra has expanded the SuperFlex coil family to 9 members. Featuring 10+ breakthrough technological innovations, the SuperFlex Coils come in a variety of sizes and shapes, all with significantly high coil density for prominent SNR increase. These coils deliver excellent adaptability and enhanced patient comfort, suitable for a wide range of clinical applications.

Key SuperFlex Coil Members (examples)

• SuperFlex Whole Body – 48 (SFWB48): 92.0 × 61.6 cm² size with no effective area limitation for large scanning coverage (thorax, abdomen, pelvis) enabling efficient one-stop large-scale imaging.
• UHD SuperFlex Small – 24 (USFS24): Advanced decoupling technology achieving coil density of 229 elements/m² for significant SNR improvement.
• Shoulder Coil – 24 (SHC24): Wearable design with exceptional adaptability to varied body contours for improved fixation, comfort, and image quality.
• UHD SuperFlex Neck & Chest – 24 (USFN24): Soft, lightweight shawl-like design for thoracic and vascular scans enabling one-stop head-carotid-aorta imaging.
• Other members mentioned: SFB24, USFL24, WRC24 and additional SuperFlex variants addressing lungs, unilateral hip, elbow, thorax, shoulder, hand and whole-body scenarios.

Full-sensory comfort design

• Vision – Astra-filled 70 cm wide bore.
• Touch – Next-generation SuperFlex coils and 4 cm extra-thick cushions.
• Hearing – Conversation-level sound scanning (quiet scanning design).

AI & Workflow Innovations (uAIFI platform)
uMR Astra delivers proactive, end-to-end AI workflow capabilities to streamline operations and support diverse clinical scenarios:

• uVision: 3D camera for AI-assisted patient positioning enabling one-click or 0-click table-in workflow across main body regions and specialized scenarios.
• EasySense: Contactless physiological signal monitoring using dual-source phased-array millimeter-wave radar to provide stable precise gating signals without contact.
• EasyScan: AI-based localization covering 40 distinct body parts to simplify complex positioning into one-click operations and fast scans.
• EasyCrop: AI-assisted vessel cropping automating vascular MIP cropping to produce button-free results with no time delay.

Enhanced Hardware Design for Usability

• Lightweight coil design: Breakthroughs in decoupling and hardware reduce coil weight for greater comfort for patients and technicians.
• Full-Flex cables design: Full-flex cables with integrated cable management improve comfort and reduce coil damage risk compared to chain-like trap designs.
• Convenient plug-in design: Low-insertion-force connectors with integrated LED indicators enable easy verification of connection status and support high-density data transmission.

Full-Stack Artifact Solution (doctor-centric)
uMR Astra includes motion and artifact management tools that operate across the scanning workflow to detect, monitor, and correct artifacts: MoCap motion monitoring during scan, ImageGuard for post-scan quality control with customizable thresholds, AiCo for artifact correction during reconstruction, and SparkCo for detecting and correcting spark artifacts in real time.

Caractéristiques / spécifications techniques

• Field Strength: 3 Tesla
• Bore size: 70 cm
• Liquid helium consumption (under normal operating conditions): Zero
• Max. uniaxial gradient strength (X/Y/Z can achieve simultaneously): 50 mT/m
• Max. uniaxial slew rate (X/Y/Z can achieve simultaneously): 200 T/m/s
• Max. FOV: 55 cm (X and Y directions)
• Number of transmit channels: 2
• Number of independent receiver channels usable simultaneously in one single scan in one FOV: Up to 144
• Scanning room area (minimum): 15.2 m²
• Control room area (minimum): 3.8 m²