ViewRay has been granted a patent for an improved magnetic resonance imaging (MRI) system. The system includes a low field strength main magnet, a gradient coil assembly, an RF coil system, and a control system. It is configured to acquire and process MRI data from a patient using a sparse sampling imaging technique, without parallel imaging, while maintaining an acceptable specific absorption rate. GlobalData’s report on ViewRay gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on ViewRay, Radiotherapy techniques was a key innovation area identified from patents. ViewRay's grant share as of September 2023 was 51%. Grant share is based on the ratio of number of grants to total number of patents.

Improved low field strength mri system with sparse sampling imaging

Source: United States Patent and Trademark Office (USPTO). Credit: ViewRay Inc

A recently granted patent (Publication Number: US11768257B2) describes a magnetic resonance imaging (MRI) system that utilizes a sparse sampling imaging technique without parallel imaging to produce cine MRI while maintaining an acceptable specific absorption rate in the human patient. The system includes a main magnet with a field strength less than 1.0 Tesla, a gradient coil assembly, an RF coil system, and a control system for acquisition and processing of MRI data.

The control system is configured to acquire MRI data at a rate enabling the production of cine MRI at a minimum of 4 frames per second. It obtains the specific absorption rate by controlling the MRI to operate at a gradient field strength above 75 mT/m/ms and by employing pulse sequences that do not require dephasing pulses. The system also has the capability to integrate a radiation therapy device for radiation treatment of the patient.

The control system utilizes the cine MRI to track the locations of tissues in the human patient, which can potentially aid in administering radiation therapy. The system's RF bandwidth is less than 1800 Hz.

Additionally, the patent includes a computer program product that stores instructions for acquiring MRI data using the described system and processing the data to reconstruct images of the patient and produce cine MRI. The program product also allows for the alteration of radiation therapy based on the tracking of tissue locations using the cine MRI. The specific absorption rate is obtained through the same methods as described for the MRI system.

In summary, this granted patent describes a magnetic resonance imaging system and computer program product that utilize a sparse sampling imaging technique without parallel imaging to produce cine MRI while maintaining an acceptable specific absorption rate. The system includes a main magnet, gradient coil assembly, RF coil system, and a control system. It has the capability to integrate a radiation therapy device and utilizes the cine MRI to track tissue locations. The computer program product allows for the acquisition and processing of MRI data, as well as the alteration of radiation therapy based on the cine MRI.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.