Helium Free MRI Image Guided Radiation Therapy (IGRT) System for ViewRay Inc

 描述（由申请人提供）：该NIH Bridge Grant将为癌症治疗的商业图像引导放射治疗（IGRT）提供传导冷却、无液氦、MRI背景磁体。该计划将确保我们客户的图像引导放射治疗（IGRT）系统的成功持续商业化，这是一种重要的癌症治疗设备，目前正在治疗患者。该项目的结果消除了我们客户目前对液氦的依赖，在未来几年内，液氦的可用性受到全球短缺的威胁。癌症治疗系统使得图像引导的放射治疗（IGRT）可用，其以精确的精度在真实的时间内向恶性肿瘤递送伽马辐射，而不管器官移动。这是通过并行的真实的时间辐射治疗和MRI成像来实现的。通过Hyper Tech获得的Bridge Grant的结果使这一重要技术的不间断进展成为可能，该技术提供了基于我们的二硼化镁（MgB2）超导导线的无氦低温冷却背景磁体。这些MgB2磁体系统不仅将显著降低初始成本，还将降低客户的图像引导放射治疗系统的持续服务成本。此外，磁体系统将更安全并且更不易于失超。这些磁铁将取代目前的液氦浴依赖铌钛（NbTi）超导体背景磁铁在MRI系统。在项目期间，我们将完成并最终确定建模和设计，完成详细图纸，制造磁体组件和超导导线。我们将缠绕并测试系统中的各个线圈。我们将制造、组装和测试磁体系统，并将其交付给我们的客户，以便集成和测试到他们的图像引导放射治疗系统中。

 DESCRIPTION (provided by applicant): This NIH Bridge Grant will result in a conduction cooled, liquid helium free, MRI background magnet for a commercial image guided radiation treatment (IGRT) for cancer treatment. The program will ensure the successful continued commercialization of our customer's image guided radiation therapy (IGRT) system, a vital cancer treatment device now treating patients. The result of the project removes our customer's present system from its dependence on liquid helium, the availability of which is threatened by worldwide shortages in the next few years. The cancer treatment system makes available image guided radiation therapy (IGRT) that delivers gamma radiation in real time to malignant tumors with pinpoint accuracy in spite of organ movement. This is realized with the concurrent real time radiation treatment and MRI imaging. The results of this Bridge Grant through Hyper Tech makes possible the uninterrupted progress of this vital technology by providing a helium-free cryocooled background magnet based on our magnesium diboride (MgB2) superconducting wire. These MgB2 magnet systems will not only significantly lower the initial cost but will reduce on-going service costs of our customer's image guided radiation therapy system. In addition, the magnet system will be safer and less prone to quenching. These magnets will replace the current liquid helium bath dependent niobium titanium (NbTi) superconductor background magnets in the MRI system. During the project we will complete and finalize the modelling and design, complete detail drawings, fabricate the magnet components and the superconductor wire. We will wind and test the individual coils in the system. We will fabricate, assemble, and test the magnet system and deliver it to our customer for integration and testing into their image guided radiation therapy system.