Abstract #0183

Artifact free Projection onto Dipole Fields via a Generalized Frequency-domain Discrete Dipole Kernel

Carlos Milovic¹, Mathias Lambert², Patrick Fuchs³, Oliver Kiersnowski³, Chaoyue Wang⁴, Zheng Wang⁵, and Cristian Tejos²

¹School of Electrical Engineering, Pontificia Universidad Catolica de Valparaiso, Valparaiso, Chile, ²Pontificia Universidad Catolica de Chile, Santiago, Chile, ³Department of Medical Physics and Biomedical Engineering, University College London, London, United Kingdom, ⁴SJTU-Ruijin-UIH Institute for Medical Imaging Technology, Shanghai Jiaotong University School of Medicine, Shanghai, China, ⁵School of Psychological and Cognitive Sciences; Beijing Key Laboratory of Behavior and Mental Health; IDG/McGovern Institute for Brain Research; Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China

Synopsis

Keywords: Susceptibility/QSM, Quantitative Susceptibility mapping, Background field removal

Motivation: Overcoming striping artifacts in the background removal step is a common challenge, especially in non-orthogonal (oblique) B0 field orientations.

Goal(s): Develop a robust solution to eliminate striping artifacts while improving the accuracy of QSM images.

Approach: We introduce a novel approach, employing a generalized discrete kernel to suppress striping artifacts generated by the Projection onto Dipole Fields method.

Results: Our approach successfully addresses striping artifacts and enhances the accuracy of PDF solutions, even at non-orthogonal B0 field angles, promising artifact-free results.

Impact: Our work promises to benefit the EMTP community by providing a more robust solution for addressing striping artifacts. This can lead to improved diagnostic accuracy and higher-quality imaging, ultimately enhancing patient care and advancing MRI technology.

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