Prospective motion correction using tracking coils.

Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine
Lei QinCharles L Dumoulin

Abstract

Intracavity imaging coils provide higher signal-to-noise than surface coils and have the potential to provide higher spatial resolution in shorter acquisition times. However, images from these coils suffer from physiologically induced motion artifacts, as both the anatomy and the coils move during image acquisition. We developed prospective motion-correction techniques for intracavity imaging using an array of tracking coils. The system had <50 ms latency between tracking and imaging, so that the images from the intracavity coil were acquired in a frame of reference defined by the tracking array rather than by the system's gradient coils. Two-dimensional gradient-recalled and three-dimensional electrocardiogram-gated inversion-recovery-fast-gradient-echo sequences were tested with prospective motion correction using ex vivo hearts placed on a moving platform simulating both respiratory and cardiac motion. Human abdominal tests were subsequently conducted. The tracking array provided a positional accuracy of 0.7 ± 0.5 mm, 0.6 ± 0.4 mm, and 0.1 ± 0.1 mm along the X, Y, and Z directions at a rate of 20 frames-per-second. The ex vivo and human experiments showed significant image quality improvements for both in-plane and through-p...Continue Reading

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Citations

Jun 25, 2014·Annals of Biomedical Engineering·Yue ChenZion Tsz Ho Tse
Mar 10, 2016·PET Clinics·Marie Anne RichardMartin Lepage
Nov 21, 2012·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Nelly A VollandJ Rock Hadley
Jul 3, 2013·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Melvyn B OoiRoland Bammer
Aug 14, 2012·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Daniel KopeiniggRoland Bammer
Nov 8, 2014·Brain Imaging and Behavior·Andrei IrimiaJohn D Van Horn
Aug 29, 2014·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Shashank Sathyanarayana HegdePaul A Bottomley
Jul 31, 2013·Journal of Magnetic Resonance·Ke ZhangMichael Bock
Apr 6, 2016·IEEE Transactions on Bio-medical Engineering·Bailiang ChenJacques Felblinger
Aug 26, 2017·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Alexander AranovitchKlaas P Pruessmann
Sep 30, 2020·NeuroImage·Laetitia VionnetKlaas Paul Pruessmann
Jan 27, 2021·The International Journal of Medical Robotics + Computer Assisted Surgery : MRCAS·Alexander SquiresZion Tsz Ho Tse

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