圆形K空间采样技术及其在磁共振成像中的应用  

Circular K-space sampling and its application in magnetic resonance imaging

作　　者：赵海涛[1] 陆军[2] 张卓利[1] 常英娟[1] 刘满生[1] 

机构地区：[1]第四军医大学西京医院放射线科,陕西西安710033 [2]第四军医大学西京医院放射治疗科,陕西西安710033

出　　处：《第四军医大学学报》2003年第1期92-94,共3页Journal of the Fourth Military Medical University

摘　　要：We analyze the characteristics of circular sampling and its applications in magnetic resonance imaging. The entire K space was sampled along a set of concentric circles by using only 50% of the pulses required by the standard line sampling technique (2DFT). The circular K space sampling provided better signal to noise ratio for equal acquisition time. The sampling configuration in the K space is identical to MR projection reconstruction.We analyze the characteristics of circular sampling and its applications in magnetic resonance imaging. The entire K space was sampled along a set of concentric circles by using only 50% of the pulses required by the standard line sampling technique (2DFT). The circular K space sampling provided better signal to noise ratio for equal acquisition time. The sampling configuration in the K space is identical to MR projection reconstruction.

关 键 词：圆形K空间采样技术 磁共振成像 梯度模式 

分 类 号：R445.2[医药卫生—影像医学与核医学]