Nuclear magnetic resonance imaging method for removing wraparound artifacts

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	Nuclear magnetic resonance imaging method for removing wraparound artifacts
其他题名	Nuclear magnetic resonance imaging method for removing wraparound artifacts
	IKEZAKI, YOSHIKAZU
	2005-07-27
专利权人	GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY LLC
公开日期	2005-07-27
授权国家	欧洲专利局
专利类型	发明申请
摘要	For the purpose of removing wraparound artifacts without degrading image quality of an image, there are provided a phase correcting section (1072) for conducting phase correction processing on received signals in an actual scan based on a reference signal as a corrective signal received by one of a plurality of receive coils (1013), without applying a gradient magnetic field Gp in a phase encoding direction, and an unfolding section (1075) for removing wraparound artifacts in an image based on the signals received by the plurality of receive coils (1013) in the actual scan and subjected to the phase correction processing by the phase correcting section (1072), and on the difference in sensitivity distribution among the plurality of receive coils (1013), so that the phase correction processing is conducted while preserving the relative phase relationship among the coils, and unfolding processing (removal processing) is conducted using the result of such phase correction processing.
其他摘要	为了在不降低图像的图像质量的情况下去除环绕伪像，提供了相位校正部分（1072），用于基于参考信号对实际扫描中的接收信号进行相位校正处理，作为由其中一个接收的校正信号。多个接收线圈（1013），在相位编码方向上不施加梯度磁场Gp，以及展开部分（1075），用于基于由多个接收线圈（1013）接收的信号去除图像中的环绕伪像在实际扫描中并由相位校正部分（1072）进行相位校正处理，并对多个接收线圈（1013）之间的灵敏度分布的差异进行处理，以便在保持相对相位的同时进行相位校正处理线圈之间的关系，以及使用这种相位校正处理的结果进行展开处理（去除处理）。
主权项	A nuclear magnetic resonance imaging apparatus for removing wraparound artifacts from an image produced from signals received by a plurality of coils based on the difference in sensitivity distribution among said plurality of coils, said apparatus comprising: a phase correction processing device for conducting phase correction processing on the signals received by said plurality of coils based on a corrective signal received by one of said plurality of coils while applying no gradient magnetic field in a phase encoding direction; and a removing device for removing wraparound artifacts in said image based on the signals received by said plurality of coils and subjected to said phase correction processing by said phase correction processing device, and on the difference in sensitivity distribution among said plurality of coils.
申请日期	2004-03-10
专利号	EP1460446A3
专利状态	失效
申请号	EP2004251388
公开（公告）号	EP1460446A3
IPC 分类号	G02B6/12 \| A61B5/055 \| G01R33/20 \| G01R33/34 \| G01R33/48 \| G01R33/54 \| G01R33/561 \| G01R33/565 \| G02F1/313 \| G02F1/35 \| H01L27/15 \| H01S5/00
专利代理人	-
代理机构	PEDDER, JAMES CUTHBERT
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/61071
专题	半导体激光器专利数据库
作者单位	GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY LLC
推荐引用方式 GB/T 7714	IKEZAKI, YOSHIKAZU. Nuclear magnetic resonance imaging method for removing wraparound artifacts. EP1460446A3[P]. 2005-07-27.

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