Non-Contrast-Enhanced 4D MRA Using Compressed Sensing Reconstruction
    11.
    发明申请
    Non-Contrast-Enhanced 4D MRA Using Compressed Sensing Reconstruction 有权
    使用压缩感知重建的非对比度增强型4D MRA

    公开(公告)号:US20130121550A1

    公开(公告)日:2013-05-16

    申请号:US13284143

    申请日:2011-10-28

    IPC分类号: G06T11/00 A61B5/055

    摘要: A reconstructed image is rendered of a patient by a processor from a set of undersampled MRI data by first subtracting two repetitions of the acquired data in k-space to create a third dataset. The processor reconstructs the image by minimizing an objective function under a constraint related to the third dataset, wherein the objective function includes applying a Karhunen-Loeve Transform (KLT) to a temporal dimension of data. The objective function under the constraint is expressed as arg minf{∥φ(f)∥1 subject to ∥Af−y∥2≦ε}. The reconstructed image is an angiogram which may be a 4D angiogram. The angiogram is used to diagnose a vascular disease.

    摘要翻译: 通过首先在k空间中减去所获取的数据的两次重复以创建第三数据集,由处理器从一组欠采样的MRI数据中呈现患者的重建图像。 处理器通过在与第三数据集相关的约束下最小化目标函数来重建图像,其中目标函数包括将Karhunen-Loeve变换(KLT)应用于数据的时间维度。 约束下的目标函数表示为arg minf {∥phi(f)‖1,受∥Af-y‖2@ epsilon}的限制。 重建的图像是可以是4D血管造影的血管造影。 血管造影用于诊断血管疾病。