Invention Grant
US08457717B2 Method and system of adaptive control for reducing motion artifacts and patient dose in four dimensional computed tomography
有权
在四维计算机断层扫描中减少运动伪像和患者剂量的自适应控制方法和系统
- Patent Title: Method and system of adaptive control for reducing motion artifacts and patient dose in four dimensional computed tomography
- Patent Title (中): 在四维计算机断层扫描中减少运动伪像和患者剂量的自适应控制方法和系统
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Application No.: US10599084Application Date: 2005-04-07
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Publication No.: US08457717B2Publication Date: 2013-06-04
- Inventor: Paul J. Keall , Jeffrey F. Williamson
- Applicant: Paul J. Keall , Jeffrey F. Williamson
- Applicant Address: US CA Palo Alto
- Assignee: Stanford University
- Current Assignee: Stanford University
- Current Assignee Address: US CA Palo Alto
- Agency: Whitham, Curtis, Christofferson & Cook, P.C.
- International Application: PCT/US2005/011544 WO 20050407
- International Announcement: WO2005/099382 WO 20051027
- Main IPC: A61B5/055
- IPC: A61B5/055 ; H04B15/00 ; G21K5/00
Abstract:
Motion artifacts and patient dose during 4D CT imaging are reduced by adaptive control of data acquisition. The respiration signal (310) and CT data acquisition (340) are linked, such that ‘bad’ data from erratic breathing cycles that cause artifacts is not acquired by pausing CT data acquisition (360) when erratic breathing is detected, and not resuming CT data acquisition until steady-state respiration is resumed. Training data is used to develop a tolerance envelope for a respiratory signal such that for erratic breathing cycles the respiratory signal is not within the tolerance envelope (330).
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