Invention Grant
US07974679B2 Method and apparatus to reduce image intensity variation during MR data acquisition
有权
降低MR数据采集过程中图像强度变化的方法和装置
- Patent Title: Method and apparatus to reduce image intensity variation during MR data acquisition
- Patent Title (中): 降低MR数据采集过程中图像强度变化的方法和装置
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Application No.: US10604154Application Date: 2003-06-27
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Publication No.: US07974679B2Publication Date: 2011-07-05
- Inventor: Yong Zhou
- Applicant: Yong Zhou
- Applicant Address: US NY Schenectady
- Assignee: General Electric Company
- Current Assignee: General Electric Company
- Current Assignee Address: US NY Schenectady
- Agency: Ziolkowski Patent Solutions Group, SC
- Main IPC: A61B5/055
- IPC: A61B5/055 ; G01V3/14

Abstract:
The present invention provides a system and method of reducing image intensity variations during imaging acquisitions that utilize large encoding gradient pulses that are played out immediately before a center of k-space is sampled. The present invention includes an acquisition and sampling that implements a predetermined delay in sampling prior to sampling the center of k-space. The delay in sampling the center of k-space following sampling of a peripheral region of k-space maintains the steady state of the MR signal and reduces the image intensity variation caused by eddy current and gradient hysteresis. As such, the intensity variations throughout k-space may be reduced substantially and brought closer to the intrinsic noise level of the data acquisition.
Public/Granted literature
- US20050007110A1 METHOD AND APPARATUS TO REDUCE IMAGE INTENSITY VARIATION DURING MR DATA ACQUISITION Public/Granted day:2005-01-13
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