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Sciarra A, Mattern H, Yakupov R, Chatterjee S, Stucht D, Oeltze-Jafra S, Godenschweger F, Speck O. Quantitative evaluation of prospective motion correction in healthy subjects at 7T MRI. Magn Reson Med 2022; 87:646-657. [PMID: 34463376 PMCID: PMC8663924 DOI: 10.1002/mrm.28998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 07/28/2021] [Accepted: 08/16/2021] [Indexed: 02/03/2023]
Abstract
PURPOSE Quantitative assessment of prospective motion correction (PMC) capability at 7T MRI for compliant healthy subjects to improve high-resolution images in the absence of intentional motion. METHODS Twenty-one healthy subjects were imaged at 7 T. They were asked not to move, to consider only unintentional motion. An in-bore optical tracking system was used to monitor head motion and consequently update the imaging volume. For all subjects, high-resolution T1 (3D-MPRAGE), T2 (2D turbo spin echo), proton density (2D turbo spin echo), and T2∗ (2D gradient echo) weighted images were acquired with and without PMC. The images were evaluated through subjective and objective analysis. RESULTS Subjective evaluation overall has shown a statistically significant improvement (5.5%) in terms of image quality with PMC ON. In a separate evaluation of every contrast, three of the four contrasts (T1 , T2 , and proton density) have shown a statistically significant improvement (9.62%, 9.85%, and 9.26%), whereas the fourth one ( T2∗ ) has shown improvement, although not statistically significant. In the evaluation with objective metrics, average edge strength has shown an overall improvement of 6% with PMC ON, which was statistically significant; and gradient entropy has shown an overall improvement of 2%, which did not reach statistical significance. CONCLUSION Based on subjective assessment, PMC improved image quality in high-resolution images of healthy compliant subjects in the absence of intentional motion for all contrasts except T2∗ , in which no significant differences were observed. Quantitative metrics showed an overall trend for an improvement with PMC, but not all differences were significant.
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Affiliation(s)
- A. Sciarra
- Medicine and Digitalization - MedDigit, Medical Faculty, Univ. Dept. of Neurology, Otto von Guericke University, Magdeburg, 39120, Germany, Dept. of Biomedical Magnetic Resonance, Otto von Guericke University, Magdeburg,39120, Germany, Institute for Physics, Otto von Guericke University, Magdeburg, 39106, Germany
| | - H. Mattern
- Dept. of Biomedical Magnetic Resonance, Otto von Guericke University, Magdeburg,39120, Germany
| | - R. Yakupov
- German Centre for Neurodegenerative Diseases (DZNE), Magdeburg, 39120, Germany
| | - S. Chatterjee
- Dept. of Biomedical Magnetic Resonance, Otto von Guericke University, Magdeburg,39120, Germany, Data and Knowledge Engineering Group, Faculty of Computer Science, Otto von Guericke University, Magdeburg
| | - D. Stucht
- Dept. of Biomedical Magnetic Resonance, Otto von Guericke University, Magdeburg,39120, Germany
| | - S. Oeltze-Jafra
- Medicine and Digitalization - MedDigit, Medical Faculty, Univ. Dept. of Neurology, Otto von Guericke University, Magdeburg, 39120, Germany, German Centre for Neurodegenerative Diseases (DZNE), Magdeburg, 39120, Germany, Center for Behavioral Brain Sciences, Magdeburg, 39120, Germany
| | - F. Godenschweger
- Dept. of Biomedical Magnetic Resonance, Otto von Guericke University, Magdeburg,39120, Germany
| | - O. Speck
- Dept. of Biomedical Magnetic Resonance, Otto von Guericke University, Magdeburg,39120, Germany, Institute for Physics, Otto von Guericke University, Magdeburg, 39106, Germany, German Centre for Neurodegenerative Diseases (DZNE), Magdeburg, 39120, Germany, Leibniz Institute for Neurobiology, Magdeburg, 39120, Germany, Center for Behavioral Brain Sciences, Magdeburg, 39120, Germany
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Perosa V, Bartels C, Godenschweger F, Speck O, Heinze HJ, Vielhaber S, Schreiber S. Contrast-enhancement in the wall of a cerebral fusiform aneurysm in neuroborreliosis at 7 T MRI. J Neurol Sci 2020; 418:117112. [PMID: 32932169 DOI: 10.1016/j.jns.2020.117112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/25/2020] [Accepted: 08/26/2020] [Indexed: 11/30/2022]
Affiliation(s)
- V Perosa
- Department of Neurology, Otto-von-Guericke University, Magdeburg, Germany; J. Philip Kistler Stroke Research Center, Massachusetts General Hospital, Boston, USA.
| | - C Bartels
- Department of Neurology, Otto-von-Guericke University, Magdeburg, Germany
| | - F Godenschweger
- Institute of Physiscs, Otto-von-Guericke University, Magdeburg, Germany
| | - O Speck
- German Center for Neurodegenerative Diseases (DZNE) within the Helmholtz Association, Magdeburg, Germany; Institute of Physiscs, Otto-von-Guericke University, Magdeburg, Germany; Leibniz-Institute for Neurobiology, Magdeburg, Germany; Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - H J Heinze
- Department of Neurology, Otto-von-Guericke University, Magdeburg, Germany; German Center for Neurodegenerative Diseases (DZNE) within the Helmholtz Association, Magdeburg, Germany; Leibniz-Institute for Neurobiology, Magdeburg, Germany; Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - S Vielhaber
- Department of Neurology, Otto-von-Guericke University, Magdeburg, Germany; German Center for Neurodegenerative Diseases (DZNE) within the Helmholtz Association, Magdeburg, Germany; Center for Behavioral Brain Sciences, Magdeburg, Germany
| | - S Schreiber
- Department of Neurology, Otto-von-Guericke University, Magdeburg, Germany; German Center for Neurodegenerative Diseases (DZNE) within the Helmholtz Association, Magdeburg, Germany; Center for Behavioral Brain Sciences, Magdeburg, Germany
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Yarach U, In M, Chatnuntawech I, Bilgic B, Godenschweger F, Mattern H, Sciarra A, Speck O. Model-based iterative reconstruction for single-shot EPI at 7T. Magn Reson Med 2017; 78:2250-2264. [PMID: 28185433 PMCID: PMC5552473 DOI: 10.1002/mrm.26633] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Revised: 01/07/2017] [Accepted: 01/11/2017] [Indexed: 12/30/2022]
Abstract
PURPOSE To describe a model-based reconstruction strategy for single-shot echo planar imaging (EPI) that intrinsically accounts for k-space nonuniformity, Nyquist ghosting, and geometric distortions during rather than before or after image reconstruction. METHODS Ramp sampling and inhomogeneous B0 field-induced distortion cause the EPI samples to lie on a non-Cartesian grid, thus requiring the nonuniform fast Fourier transform. Additionally, a 2D Nyquist ghost phase correction without the need for extra navigator acquisition is included in the proposed reconstruction. Coil compression is also incorporated to reduce the computational load. The proposed method is applied to phantom and human brain MRI data. RESULTS The results demonstrate that Nyquist ghosting and geometric distortions are reduced by the proposed reconstruction. The proposed 2D phase correction is superior to a conventional 1D correction. The reductions of both artifacts lead to improved temporal signal-to-noise ratio (tSNR). The virtual coil results suggest that the processing time can be reduced by up to 75%, with a mean tSNR loss of only 3.2% when using 8-virtual instead of 32-physical coils for twofold undersampled data. CONCLUSION The proposed reconstruction improves the quality (ghosting, geometry, and tSNR) of EPI without requiring calibration data for Nyquist ghost correction. Magn Reson Med 78:2250-2264, 2017. © 2017 International Society for Magnetic Resonance in Medicine.
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Affiliation(s)
- U. Yarach
- Department of Biomedical Magnetic Resonance, Otto-von-Guericke University Magdeburg, Germany
- Department of Radiological Technology, Chiang Mai University, Chiangmai, Thailand
| | - M.H. In
- Department of Neurologic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - I. Chatnuntawech
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - B. Bilgic
- Department of Radiology, Harvard Medical School, Boston, Massachusetts, USA
- A. A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, Massachusetts, USA
| | - F. Godenschweger
- Department of Biomedical Magnetic Resonance, Otto-von-Guericke University Magdeburg, Germany
| | - H. Mattern
- Department of Biomedical Magnetic Resonance, Otto-von-Guericke University Magdeburg, Germany
| | - A. Sciarra
- Department of Biomedical Magnetic Resonance, Otto-von-Guericke University Magdeburg, Germany
| | - O. Speck
- Department of Biomedical Magnetic Resonance, Otto-von-Guericke University Magdeburg, Germany
- Leibniz Institute for Neurobiology, Magdeburg, Germany
- German Centre for Neurodegenerative Diseases (DZNE), Site Magdeburg, Germany
- Center for Behavioral Brain Sciences, Magdeburg, Germany
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Friebe B, Richter M, Penzlin S, Stärke C, Godenschweger F, Ricke J, Kropf S, Fischbach F, Speck O. Morphologische Bildgebung von Meniskus- und Knorpelschäden des Kniegelenkes mit Ultrahochfeld-MRT bei 7Tesla – ein Vergleich mit 3-Tesla Bildgebung mit arthroskopischer Korrelation. ROFO-FORTSCHR RONTG 2017. [DOI: 10.1055/s-0037-1600362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- B Friebe
- Universitätsklinik Magdeburg, Radiologie und Nuklearmedizin, Magdeburg
| | - M Richter
- Universitätsklinik Magdeburg, Radiologie und Nuklearmedizin, Magdeburg
| | - S Penzlin
- Universitätsklinik Magdeburg, Radiologie und Nuklearmedizin, Magdeburg
| | - C Stärke
- Universitätsklinik Magdeburg, Orthopädie, Magdeburg
| | - F Godenschweger
- Institut für experimentelle Physik, Biomedizinische Magnetresonanz, Magdeburg
| | - J Ricke
- Universitätsklinik Magdeburg, Radiologie und Nuklearmedizin, Magdeburg
| | - S Kropf
- Universitätsklinik Magdeburg, Institut für Biometrie und medizinische Informatik, Magdeburg
| | - F Fischbach
- Universitätsklinik Magdeburg, Radiologie und Nuklearmedizin, Magdeburg
| | - O Speck
- Institut für experimentelle Physik und Leibniz Institut für Neurobiologie, Biomedizinische Magnetresonanz, Magdeburg
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Godenschweger F, Kägebein U, Stucht D, Yarach U, Sciarra A, Yakupov R, Lüsebrink F, Schulze P, Speck O. Motion correction in MRI of the brain. Phys Med Biol 2016; 61:R32-56. [PMID: 26864183 DOI: 10.1088/0031-9155/61/5/r32] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Subject motion in MRI is a relevant problem in the daily clinical routine as well as in scientific studies. Since the beginning of clinical use of MRI, many research groups have developed methods to suppress or correct motion artefacts. This review focuses on rigid body motion correction of head and brain MRI and its application in diagnosis and research. It explains the sources and types of motion and related artefacts, classifies and describes existing techniques for motion detection, compensation and correction and lists established and experimental approaches. Retrospective motion correction modifies the MR image data during the reconstruction, while prospective motion correction performs an adaptive update of the data acquisition. Differences, benefits and drawbacks of different motion correction methods are discussed.
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Affiliation(s)
- F Godenschweger
- Biomedical Magnetic Resonance, Otto-von-Guericke University, Magdeburg, Germany
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