Correction of slice misalignment in multi-breath-hold cardiac MRI scans
Cardiac Magnetic Resonance (CMR) provides unique functional and anatomical visualization of the macro and micro-structures of the heart. However, CMR acquisition times usually necessitate slices to be acquired at different breath holds, which results in potential misalignment of the acquired slices....
| Main Authors: | , , , |
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| Format: | Conference item |
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Springer
2017
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| _version_ | 1797102845664690176 |
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| author | Villard, B Zacur, E Dall'Armellina, E Grau, V |
| author_facet | Villard, B Zacur, E Dall'Armellina, E Grau, V |
| author_sort | Villard, B |
| collection | OXFORD |
| description | Cardiac Magnetic Resonance (CMR) provides unique functional and anatomical visualization of the macro and micro-structures of the heart. However, CMR acquisition times usually necessitate slices to be acquired at different breath holds, which results in potential misalignment of the acquired slices. Correcting for this spatial misalignment is required for accurate three-dimensional (3D) reconstruction of the heart chambers allowing robust metrics for shape analysis among populations as well as precise representations of individual geometries and scars. While several methods have been proposed to realign slices, their use in other important protocols such as Late Gadolinium Enhancement (LGE) is yet to be demonstrated. We propose a registration framework based on local phase to correct for slice misalignment. Our registration framework is a group registration technique combining long- and short-axis slices. Validation was performed on LGE slices using expert-traced ventricular contours. For 15 clinical multi-breath-hold datasets our method reduced the median discrepancy of moderately misaligned slices from 2.19 mm to 1.63 mm, and of severely misaligned from 7.33 mm to 1.96 mm. |
| first_indexed | 2024-03-07T06:11:35Z |
| format | Conference item |
| id | oxford-uuid:efb14389-9d9a-4cde-9f38-96e83eec12cb |
| institution | University of Oxford |
| last_indexed | 2024-03-07T06:11:35Z |
| publishDate | 2017 |
| publisher | Springer |
| record_format | dspace |
| spelling | oxford-uuid:efb14389-9d9a-4cde-9f38-96e83eec12cb2022-03-27T11:42:13ZCorrection of slice misalignment in multi-breath-hold cardiac MRI scansConference itemhttp://purl.org/coar/resource_type/c_5794uuid:efb14389-9d9a-4cde-9f38-96e83eec12cbSymplectic Elements at OxfordSpringer2017Villard, BZacur, EDall'Armellina, EGrau, VCardiac Magnetic Resonance (CMR) provides unique functional and anatomical visualization of the macro and micro-structures of the heart. However, CMR acquisition times usually necessitate slices to be acquired at different breath holds, which results in potential misalignment of the acquired slices. Correcting for this spatial misalignment is required for accurate three-dimensional (3D) reconstruction of the heart chambers allowing robust metrics for shape analysis among populations as well as precise representations of individual geometries and scars. While several methods have been proposed to realign slices, their use in other important protocols such as Late Gadolinium Enhancement (LGE) is yet to be demonstrated. We propose a registration framework based on local phase to correct for slice misalignment. Our registration framework is a group registration technique combining long- and short-axis slices. Validation was performed on LGE slices using expert-traced ventricular contours. For 15 clinical multi-breath-hold datasets our method reduced the median discrepancy of moderately misaligned slices from 2.19 mm to 1.63 mm, and of severely misaligned from 7.33 mm to 1.96 mm. |
| spellingShingle | Villard, B Zacur, E Dall'Armellina, E Grau, V Correction of slice misalignment in multi-breath-hold cardiac MRI scans |
| title | Correction of slice misalignment in multi-breath-hold cardiac MRI scans |
| title_full | Correction of slice misalignment in multi-breath-hold cardiac MRI scans |
| title_fullStr | Correction of slice misalignment in multi-breath-hold cardiac MRI scans |
| title_full_unstemmed | Correction of slice misalignment in multi-breath-hold cardiac MRI scans |
| title_short | Correction of slice misalignment in multi-breath-hold cardiac MRI scans |
| title_sort | correction of slice misalignment in multi breath hold cardiac mri scans |
| work_keys_str_mv | AT villardb correctionofslicemisalignmentinmultibreathholdcardiacmriscans AT zacure correctionofslicemisalignmentinmultibreathholdcardiacmriscans AT dallarmellinae correctionofslicemisalignmentinmultibreathholdcardiacmriscans AT grauv correctionofslicemisalignmentinmultibreathholdcardiacmriscans |