Invention Grant
- Patent Title: Method and apparatus for performing guided and flexible self-navigated structural MRI for motion compensation
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Application No.: US14325999Application Date: 2014-07-08
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Publication No.: US09714998B2Publication Date: 2017-07-25
- Inventor: Gunnar Krueger , Davide Piccini
- Applicant: SIEMENS AKTIENGESELLSCHAFT
- Applicant Address: DE Munich
- Assignee: Siemens Aktiengesellschaft
- Current Assignee: Siemens Aktiengesellschaft
- Current Assignee Address: DE Munich
- Agent Laurence Greenberg; Werner Stemer; Ralph Locher
- Priority: EP13175939 20110710
- Main IPC: G01R33/565
- IPC: G01R33/565 ; G01R33/567 ; G01R33/48

Abstract:
A method and a magnetic resonance imaging apparatus provide subject/object motion detection and correction during a MRI scan. The method includes generating via a magnetic resonance scanner a magnetic field gradient and a radio-frequency signal for the MRI scan. The radio-frequency signal contains a successive repetition of pulse sequences, each pulse sequence starting with a radio-frequency excitation pulse. A time between two successive radio-frequency excitation pulses are defined as a repetition time. Detecting, from a readout signal emitted in response to the pulse sequence, time-points in which motion has occurred. Interleaves are automatically created. A sampling of the k-space is performed by arranging k-space MRI readout signals acquired over each repetition time of the pulse sequence into several groups of interleaves of uniform k-space sampling reconstructing separately each subset of interleaves for obtaining low resolution MR images.
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