Overview

· 1.5T high-performance MRI system

· 70 cm wide bore

· 45 mT/m maximum gradient amplitude

· 200 T/m/s maximum slew rate

· Up to 96 independent RF receiver channels

· High magnetic-field homogeneity

· uAIFI DeepRecon deep learning reconstruction

· uAIFI EasySense contactless respiratory sensing

· QScan quiet scanning technology

· Starlight bore lighting experience

· Whole-body and whole-spine imaging

· 256-direction DTI

· Ultra-high b-value DWI

· High-resolution vascular wall imaging

· uCS Cine cardiac imaging

· Free-breathing abdominal MRI

· Non-contrast-enhanced MRA

· Large-FOV abdominal imaging

· Suitable for clinical and research applications

Specifications

Product Details

1. uAIFI Technology Platform

The uMR 680 is built around United Imaging's uAIFI Technology platform.

uAIFI integrates artificial intelligence, advanced hardware and intelligent sensing technologies throughout the MRI workflow. The platform is designed to improve:

· Image quality

· Scan efficiency

· Patient comfort

· Workflow automation

· Clinical application capabilities

The three key technologies highlighted on the current international product page are DeepRecon, EasySense and QScan.

2. DeepRecon AI Image Reconstruction

DeepRecon is a deep learning-based MRI image reconstruction technology.

It uses a convolutional neural network-based model to intelligently identify noise within acquired MR data and reconstruct images with improved signal-to-noise ratio and image sharpness.

United Imaging describes DeepRecon as providing four major benefits:

· Intelligent Noise Reduction

· Improved Image Sharpness

· High Fidelity

· Broad Field-of-View

The high-fidelity architecture incorporates safeguards in both the image domain and K-space domain, helping maintain image structure and contrast while suppressing noise.

DeepRecon is particularly useful for high-resolution examinations where maintaining both image sharpness and signal quality is important.

3. 3.0T-Level Gradient Performance

One of the major features of the uMR 680 is its high-performance gradient system.

The system provides:

45 mT/m maximum gradient amplitude

200 T/m/s maximum slew rate

The gradient performance is designed to improve signal-to-noise ratio and image sharpness, while supporting demanding applications such as advanced diffusion imaging, DTI and cardiac MRI.

The high-performance gradient system also enables shorter echo times in diffusion imaging, which can help improve image quality and quantitative diffusion assessment.

4. High-Performance Magnet and Field Homogeneity

The uMR 680 features a high-performance magnet with a 70 cm wide bore.

United Imaging reports magnetic-field homogeneity of approximately:

0.033 ppm @ 30 cm DSV (Typical)

The high level of field uniformity helps support consistent fat suppression and high-quality imaging across a large field of view. The system provides a spacious 50 × 50 × 50 cm³ field of view, facilitating patient positioning and large-area imaging.

The combination of a wide bore and high magnetic-field uniformity is particularly useful for patients who may experience discomfort or claustrophobia during conventional MRI examinations.

5. High-Density RF Receiver System

The uMR 680 supports up to 96 independent RF receive channels on the current global configuration.

The high-density RF architecture allows the system to collect more MR signal data simultaneously, supporting high-resolution imaging and faster acquisition.

It is designed to work with high-density surface coil arrays and is particularly valuable for advanced neurological, orthopedic and body imaging applications.

6. EasySense Contactless Respiratory Sensing

EasySense is a contactless respiratory monitoring technology based on millimeter-wave radar.

Instead of attaching a traditional respiratory belt to the patient, EasySense uses a radar-based sensing system integrated into the MRI bore to monitor respiratory movement without physical contact.

United Imaging describes the system as a dual-source phased-array millimeter-wave radar solution.

Its published specifications include:

· Contactless respiratory monitoring

· Detection accuracy down to 0.1 mm

· Temporal resolution up to 20 ms

· No respiratory belt required

· Compatible with clothing and MRI RF coils

This technology can be particularly useful for patients who have difficulty following breath-holding instructions or for examinations that require free-breathing respiratory synchronization.

7. QScan Quiet Scanning Technology

MRI acoustic noise can be uncomfortable for patients and may increase anxiety during examinations.

The uMR 680 incorporates QScan, a quiet scanning technology designed to transform gradient pulses into smoother waveforms.

United Imaging states that QScan can achieve up to 97% acoustic noise reduction under its specified testing conditions.

The quieter scanning environment can improve patient comfort and may be especially valuable for:

· Pediatric examinations

· Elderly patients

· Claustrophobic patients

· Long-duration MRI examinations

8. Starlight Patient Experience

The uMR 680 incorporates a Starlight Experience inside the MRI bore.

The customized lighting system is designed to create a more relaxing environment and reduce the psychological discomfort associated with enclosed MRI examinations.

Combined with the 70 cm wide bore and quiet scanning technology, the system is designed to provide a more patient-friendly MRI experience.

9. 256-Direction DTI and Fiber Tracking

The uMR 680's high-performance gradient system supports 256-direction diffusion tensor imaging (DTI).

This advanced neurological application can provide detailed information about white-matter fiber orientation and brain structural connectivity.

Fiber-tracking applications can assist in:

· Brain structural analysis

· White-matter pathway visualization

· Lesion localization

· Preoperative planning

· Neurosurgical assessment

United Imaging specifically demonstrates 256-direction DTI and fiber tracking as one of the system's neurological applications.

10. Ultra-High b-Value DWI

The high-performance gradient system enables ultra-high b-value diffusion-weighted imaging (DWI).

Higher gradient performance can help achieve shorter TE values and improve signal quality during diffusion imaging.

The uMR 680 is designed to support ultra-high b-value DWI for quantitative assessment of white-matter integrity and directionality.

11. High-Resolution Vascular Wall Imaging

The uMR 680 supports high-resolution 3D vascular wall imaging.

Combined with its high-performance gradient system and dedicated head coils, the platform is designed to visualize small vascular structures and vessel-wall characteristics.

United Imaging highlights this capability particularly for cerebrovascular disease prevention, diagnosis and follow-up.

The platform can also provide 0.5 mm isotropic vessel-wall imaging with intelligent post-processing analysis according to the current product information.

12. uCS Cine Cardiac Imaging

The system supports uCS Cine, a compressed-sensing-based cardiac cine imaging solution.

It can support cardiac cine imaging under either:

· Single breath-hold

· Free breathing

This approach can reduce the burden on patients who have difficulty maintaining prolonged breath-holds while providing useful information for cardiac functional assessment.

13. Free-Breathing Abdominal Imaging

With EasySense respiratory monitoring, the uMR 680 supports free-breathing abdominal MRI applications.

Contactless respiratory sensing allows respiratory motion to be monitored without attaching a conventional respiratory belt.

This can improve patient comfort and is particularly useful for patients who have difficulty performing repeated breath-holds.

14. Large-FOV and Whole-Body MRI

The uMR 680 supports a broad field of view and multi-bed scanning.

Clinical applications demonstrated by United Imaging include:

· Large-FOV abdominal imaging

· Whole-spine imaging

· Whole-body MRI

· Head-to-toe imaging

The broad field of view reduces the need for repeated repositioning and allows larger anatomical regions to be covered efficiently.

15. Non-Contrast-Enhanced MRA

The uMR 680 supports non-contrast-enhanced MR angiography (NCE-MRA).

This provides a contrast-agent-free approach to vascular imaging, which can be useful when contrast administration is undesirable or contraindicated.

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