Viewray Inc. | Date: 2013-03-14
The subject matter described herein provides methods for developing an IMRT treatment plan for a radiotherapy system. In one aspect, the method can include providing initial treatment parameters. These parameters can include a number of isotopic beams, a transmission angle for each beam, a prescribed dose for a target, and dose volume histogram constraints. The method can further include determining an initial fluence map including one or more beamlets. The initial fluence map can specify a fluence value for each beamlet. The method can further include determining a delivery sequence for the fluence values in the initial fluence map. The delivery sequence can include one or more apertures formed by the leaves of a collimator. These apertures can have a specified size constrained to substantially less than a maximum size associated with the collimator, when the isotopic beam is near a critical structure. Related apparatus and systems are also described.
Viewray Inc. | Date: 2010-06-17
Systems and methods for tomographic reconstruction of an image include systems and methods for producing images from k-space data. A k-space data set of an imaged object is acquired using know k-space data acquisition systems and methods. A portion of the k-space data set is sampled so as to collect some portion of the k-space data. An image is then reconstructed from the collected portion of the k-space data set according to a convex optimization model.
Viewray Inc. | Date: 2013-03-12
A radio frequency coil is disclosed that is suitable for use with a magnetic resonance imaging apparatus. The radio frequency coil comprises first and second conductive loops connected electrically to each other by a plurality of conductive rungs. The conductive rungs each include a section that is relatively thin that will result in less attenuation to a radiation beam than other thicker sections of the rungs. Insulating regions are also disposed in areas of the radio frequency coil that are bound by adjacent rungs and the conductive loops. Portions of the insulating regions can be configured to provide a substantially similar amount of attenuation to the radiation beam as the relatively thin sections of the conductive rungs.
News Article | June 30, 2015
ViewRay, a Cleveland, Ohio-based maker of a clinical MRI-guided radiation therapy system, secured up to $50 million in debt financing. CRG (formerly Capital Royalty L.P.), a premier healthcare investment firm, provides the financing. This debt is part of ViewRay’s comprehensive financing strategy to optimize its capital structure and to provide the funding for driving its global expansion. Through the transaction with CRG, the company will initially access $30 million of debt, which is interest only for three years, enabling the company to accelerate the worldwide commercialization of the MRIdian system and to retire $13 million of debt with less favorable terms. ViewRay has the option to draw a further $20 million at its discretion upon achieving certain milestones. Led by Chris A. Raanes, president and CEO, ViewRay is a medical device company developing advanced radiation therapy technology for the treatment of cancer. The MRIdian system provides continuous soft-tissue imaging during treatment, using MRI-guided radiation therapy, so that clinicians are able to see where the actual radiation dose is being delivered and adapt to changes in the patient’s anatomy.
News Article | July 27, 2015
Bellerophon Therapeutics (NSDQ:BLPH) said today that its bioabsorbable cardiac matrix failed to meet both the primary and secondary endpoints in a 303-patient clinical trial, sending its share price down nearly -63% today. BCM is a liquid medical device injected into the coronary artery leading to the damaged area of a heart, and is designed for use after […]