Head motion measurement and correction using FID navigators
نویسندگان
چکیده
منابع مشابه
Head motion detection using FID navigators.
This work explores a concept for motion detection in brain MR examinations using high channel-count RF coil arrays. It applies ultrashort (<100 μsec) free induction decay signals, making use of the knowledge that motion induces variations in these signals when compared to a reference free induction decay signal. As a proof-of-concept, the method was implemented in a standard structural MRI sequ...
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PURPOSE We suggest a motion correction concept that employs free-induction-decay (FID) navigator signals to continuously monitor motion and to guide the acquisition of image navigators for prospective motion correction following motion detection. METHODS Motion causes out-of-range signal changes in FID time series that, and in this approach, initiate the acquisition of an image navigator. Co-...
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Radiology & Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA Full list of author information is available at the end of the article Figure 1 Navigator signal (left) and T2-weighted TSE image (right) for reference (top), non-gated breathing (middle), and gated breathing (bottom) scans. The dashed line in the bottom left panel represents the gating threshold. Dyv...
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shaking; (b) Changes in volumetric measurements and image quality due to motion correction). The p-value is shown as calculated with the Wilcoxon rank-sum test when comparing the volumes with and without correction. 1417 Prospective motion correction with FID-triggered image navigators Maryna Babayeva, Pavel Falkovskiy, Tom Hilbert, Guillaume Bonnier, Bénédicte Maréchal, Reto Meuli, Jean-Philip...
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Prospective head motion correction in 3D FLASH using EPI-based volumetric navigators (vNavs) M. Dylan Tisdall, Himanshu Bhat, Keith Heberlein, and André J. W. van der Kouwe A. A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, Massachusetts, United States, Radiology, Harvard Medical School, Boston, Massachusetts, United States, Siemens Medical Solutions USA ...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2018
ISSN: 0740-3194
DOI: 10.1002/mrm.27381