4k Cold Head 200kg Load 3.0 Tesla Superconducting Basda MRI Bstar-300

Gradient sub system

Gradient sub system directly determines the spatial encoding of MRI system, it produces the signal information, at the same time it can perform GR series sequence scanning, it is the foundation of MRI system’s spatial resolution ability, gradient sub system also directly affect the scanning image thin slice scanning.

The linearity of gradient system of MRI system determine the accuracy of spatial location information, ensuring that in any acquisition, the image distortion is limited.

Gradient switching rate is an important factor of MRI scanning speed. Bstar-300 using the self-shielding gradient coil and high duty cycle gradient amplifier system, together with eddy elimination technology and design, can avoid the eddy current between the metal shielding layers, raise up the spatial encoding ability of the magnetic resonance signal and make the scan more precise, ensure high resolution image quality.

During superconducting MRI scans, the noise is much bigger, and staying in a closed environment, the patient is easy to fall into tension. Bstar-300’s gradient sub system adopts special hardware noise reduction design technology, the gradient noise is reduced to 2/3, provide patients with friendly scanning environment.

The gradient system is equipped with automatic detection function, if the temperature is too high, the system can intelligently stop the scanning, to protection of hardware from being damaged.

The system uses water chiller to produce a stable running condition.

RF sub system

The RF sub system is the source of MRI proton excitation energy, its efficiency directly affects the MRI relax signal. RF receiver receive MRI relax signal, a good receiving coil can improve the SNR of image.

The RF sub system is similar as highway lane, the more lanes, the faster flow of vehicles. Vice versa, the more the RF system channels, the faster parallel acquisition, thus the system can process the greater the amount of data in the same time, reduce the imaging time. Bstar-300 uses 16/32 channel radio frequency receiving, combined with the latest parallel sampling technology, using the DDC digital direct sampling, can short the scan time and get excellent image quality.

1. AIT coil set
2. Knee coil
3. Shoulder coil
4. Ankle coil
5. Wrist coil Breast coil

The first problem, as we all know, there is imaging noise similar to "white noise" in MRI scans procedure. Most of the noise comes from electronic equipment inherent in the patient's body and the MRI system. One of the most important goals of developing a magnetic resonance is to increase the "signal" while reducing the "noise". In this term, it means to enhance the “signal-to-noise” ratio. In fact, the method of reducing noise and improving signal-to-noise ratio is completely different for 3.0T MRI compared with 1.5T MRI. The R&D team of Basda Medical has taken painstaking technical research and adapted a novel sequence architecture and acquisition technology to raise the signal-to-noise ratio of 3.0T MRI to a new level.

The second problem is how to balance the higher field strength and stronger radio frequency and gradient systems in order to obtain better image clarity while providing faster scanning speed. 3.0T MRI has twice the magnetic field strength of 1.5T MRI. The problem solving also tests the research and development capabilities of MRI manufacturers. Through independent research and development of the key imaging technologies, the R&D team of Basda Medical has achieved a perfect balance between the two.

The third problem is the high SAR value and image interference caused by the high-intensity radio frequency excitation of 3.0T MR. The biological effect of radio frequency pulses on the human body is mainly manifested in the heating effect, which is SAR. The more frequency energy absorbed by human tissues, the higher temperature the tissue gets. The increase in body temperature is related to the duration of the radio frequency pulse, the rate of energy deposition, the temperature and humidity of the environment, and the state of the patient's thermoregulation system. The heat generated by radio frequency is strongly related to the MR frequency. The higher the frequency, the greater the heat generation. Therefore, the radio frequency pulse SAR of 3.0T magnetic resonance is much greater than 1.5T. The R&D team has repeatedly tens of thousands of scanning experiments to optimize the RF hardware and sequence pulse design to ensure patients' safety.

Software Description

Bstar-300 provides comprehensive scan kit and scanning sequence, with rich clinical application of the full body, with a full range of scan plan, assist the customer’s clinical diagnosis. Advanced scanning sequence are provided as well as all routine scan, the system also can take vascular imaging, includes a broad range of capabilities supporting fast, accurate diagnosis of brain conditions and injuries. From anatomical depiction to vascular 3D reconstruction. Bstar-300 provides the power, coils and sequences for fast, intuitive, high quality spine imaging, from routine views to advanced stitching studies.

Bstar-300 provides a versatile suite of imaging capabilities for body imaging to meet the growing demands of abdominal, pelvic, and breast exams. Including MRU/MRCP/MRM imaging, and other advanced imaging sequences. Rich post-processing software can optimize images in case necessary to help in complex diseases diagnosis, excellent image quality and abundant imaging techniques.

Workflow is critical to the efficient operation of an MRI. It impacts patient satisfaction, image quality and cost effectiveness. Bstar-300 provides full preset of clinical diagnostic scan protocol, based on rich clinical experience, corresponding arrangement and optimization have been made per related clinical application features for the scan procedure and sequence parameters of the preset scan method. With unmatched clinical capability, Bstar-300 provides an unprecedented ability to acquire complete exams with a motion compensated scan technique.

By adopting the brand-new phase array coil and scan control software, application of parallel acquisition accelerating technique, improve most sequence scanning speed, on the premise of image quality guarantee, accelerating factor can reach 6 or more as the maximum. Bstar-300 system keeps pace with international design and research, keeps improving the present clinical functions to provide lifetime free software upgrade for its users as well as let the hospital enjoy the most advanced MRI clinical application techniques.

The RF system, delivers integrated coil technology to simplify patient positioning and extend coverage with high SNR, providing extremely fast scan solution, with the help of brand-new multi-channel coil and parallel accelerating technique, it gives higher spatial resolution of head images, clearer display of anatomic structure and lesions, and less artifact.

For restless patients and those who can’t cooperate, the preset extremely fast scan sequence can be used, which is very appropriate for fetus, newborns and infants.

K_Rotat artifact erasing technique, by using stripped K space rotating filling method to complete acquisition, can completely erase the effect of movement artifact on images and greatly improve SNR at the same time to provide guarantee for accurate diagnosis.

High resolution isotropic diffusion imaging, based on powerful gradient system and amplifier system, Bstar-300 realizes faster and more reliable DWI images with high resolution, anatomic structure of head is clear, diffusion image features is obvious, very convenient for lesion location lock and lesion nature diagnosis.

HD susceptibility-weighted imaging, imaging based on the differences of magnetic susceptibility in different tissues, is a contrast enhancement technique which reflects magnetic properties of tissue. It is extremely sensitive to bleeding or de-oxidation part in blood, can provide accurate information on bleeding, arteriovenous malformation, iron deposit to realize faster and more accurate diagnosis, even the very small lesion can be quickly diagnosed too.

Fast high-resolution abdomen diffusion imaging, under the support of brand-new parallel acquisition technique, realizes abdomen diffusion imaging with high spatial resolution, high time resolution and high contrast resolution, providing excellent tool of abdomen cancer diagnosis.

Extremely HD 3D TOF blood vessel imaging, optimized K space acquisition and filling method, suppression uniform of obtained images background, no artifact, clear blood vessel trend, can display tertiary vascular or above.

E-alarm technology

At the same time, in Bstar-300 configuration there is a special monitoring system, it is simple and easy to operate, it can real-time monitoring the magnet internal pressure, temperature and liquid helium level, if the magnet condition is abnormal, the monitoring system can automatically send alarm information to the user's phone, it can greatly reduce the risk of magnet quenches.

Interactive environment

• Motor-driven patient table, 200kg weight capacity.
• High positioning accuracy.
• Built-in-magnet high resolution screen, the operation is convenient.
• Have emergency stop function, protect the patients.
• Support operation on both sides of the magnet, convenient and quick.

Water chiller set

Intelligent touch screen design, visual operation, and be convenient for maintenance.

• automatic overheating, leaking, fault detection, safe and reliable.
• one key recovery function.
• config with a set of spare water chilling unit, no need to have any worry about the system downtime.