论文标题
部分可观测时空混沌系统的无模型预测
Top-level Design and Simulated Performance of the First Portable CT-MR scanner
论文作者
论文摘要
多模式成像硬件可以集成在单个龙门上，以收集各种数据集，以供互补信息和时空相关性，其中包括PET-CT和PET-MRI在内的出色示例。但是，由于技术挑战和相关的成本效益考虑，直到今天，目前还没有CT-MRI原型。由于医学成像的迅速发展，现在可以将成本效益的CT和MRI成像仪整合在一起，以便便携性，受欢迎程度和护理点。在本文中，我们介绍了第一个便携式CT-MRI系统的顶级设计，并通过逼真的数值模拟评估其成像性能。在此CT-MRI系统中，由两个NDFEB环制成的磁铁约为40.0 cm半径，在同化处形成约57吨的磁场，并具有11.3 cm的间隙，以容纳旋转的CT龙门。靶向的MR成像视野（FOV）是直径约15 cm的球体，CT的轴向轴向沿轴向方向直径约为20 cm，在纵向方向上的直径为5 cm。我们的结果表明了这种混合系统的巨大潜力。拟议的CT-MRI系统将在诸如欠发达国家，灾难场景和战场的成像等应用中很有价值。
Multi-modality imaging hardware can be integrated in a single gantry to collect diverse datasets for complementary information and spatiotemporal correlation, with excellent examples including PET-CT and PET-MRI. However, there is no CT-MRI prototype up to today due to technical challenges and associated cost-benefit considerations. Thanks to the rapid development of medical imaging, it becomes feasible now to integrate cost-effective CT and MRI imagers together for portability, popularity, and point of care. In this paper, we present the top-level design of the first portable CT-MRI system and evaluate its imaging performance via realistic numerical simulations. In this CT-MRI system, the magnet made of two NdFeB rings of about 40.0 cm radius forms a magnetic field of about 57 mT at the isocenter and has a gap of 11.3 cm to accommodate the rotating CT gantry. The targeted MR imaging field of view (FOV) is a sphere of ~15 cm in diameter and that of CT is approximately 20 cm diameter in axial direction and 5 cm in longitudinal direction. Our results show a great potential of such a hybrid system. The proposed CT-MRI system will be valuable in applications such as imaging in underdeveloped countries, disaster scenes and battle fields.
