Validation of a data-driven motion-compensated PET brain image reconstruction algorithm in clinical patients using four radiotracers
Abstract Purpose Patients with dementia symptoms often struggle to limit movements during PET examinations, necessitating motion compensation in brain PET imaging to ensure the high image quality needed for diagnostic accuracy. This study validates a data-driven motion-compensated (MoCo) PET brain i...
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| Format: | Article |
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SpringerOpen
2025-02-01
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| Series: | EJNMMI Physics |
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| Online Access: | https://doi.org/10.1186/s40658-025-00723-w |
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| author | Ole L. Munk Anders B. Rodell Patricia B. Danielsen Josefine R. Madsen Mie T. Sørensen Niels Okkels Jacob Horsager Katrine B. Andersen Per Borghammer Joel Aanerud Judson Jones Inki Hong Sven Zuehlsdorff |
| author_facet | Ole L. Munk Anders B. Rodell Patricia B. Danielsen Josefine R. Madsen Mie T. Sørensen Niels Okkels Jacob Horsager Katrine B. Andersen Per Borghammer Joel Aanerud Judson Jones Inki Hong Sven Zuehlsdorff |
| author_sort | Ole L. Munk |
| collection | DOAJ |
| description | Abstract Purpose Patients with dementia symptoms often struggle to limit movements during PET examinations, necessitating motion compensation in brain PET imaging to ensure the high image quality needed for diagnostic accuracy. This study validates a data-driven motion-compensated (MoCo) PET brain image reconstruction algorithm that corrects head motion by integrating the detected motion frames and their associated rigid body transformations into the iterative image reconstruction. Validation was conducted using phantom scans, healthy volunteers, and clinical patients using four radiotracers with distinct tracer activity distributions. Methods We conducted technical validation experiments of the algorithm using Hoffman brain phantom scans during a series of controlled movements, followed by two blinded reader studies assessing image quality between standard images and MoCo images in 38 clinical patients receiving dementia scans with [18F]Fluorodeoxyglucose, [18F]N-(3-iodopro-2E-enyl)-2beta-carbomethoxy-3beta-(4’-methylphenyl)-nortropane, [18F]flutemetamol, and a research group comprising 25 elderly subjects scanned with [18F]fluoroethoxybenzovesamicol. Results The Hoffman brain phantom study demonstrated the algorithm’s capability to detect and correct for even minimal movements, 1-mm translations and 1⁰ rotations, applied to the phantom. Within the clinical cohort, where standard images were deemed suboptimal or non-diagnostic, all MoCo images were classified as having acceptable diagnostic quality. In the research cohort, MoCo images consistently matched or surpassed the standard image quality even in cases with minimal head movement, and the MoCo algorithm never led to degraded image quality. Conclusion The PET brain MoCo reconstruction algorithm was robust and worked well for four different tracers with markedly different uptake patterns. Moco images markedly improved the image quality for patients who were unable to lie still during a PET examination and obviated the need for any repeat scans. Thus, the method was clinically feasible and has the potential for improving diagnostic accuracy. |
| format | Article |
| id | doaj-art-81dead6f47714f14bc1f902f805143ed |
| institution | Kabale University |
| issn | 2197-7364 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | EJNMMI Physics |
| spelling | doaj-art-81dead6f47714f14bc1f902f805143ed2025-02-09T12:54:51ZengSpringerOpenEJNMMI Physics2197-73642025-02-0112111510.1186/s40658-025-00723-wValidation of a data-driven motion-compensated PET brain image reconstruction algorithm in clinical patients using four radiotracersOle L. Munk0Anders B. Rodell1Patricia B. Danielsen2Josefine R. Madsen3Mie T. Sørensen4Niels Okkels5Jacob Horsager6Katrine B. Andersen7Per Borghammer8Joel Aanerud9Judson Jones10Inki Hong11Sven Zuehlsdorff12Department of Nuclear Medicine & PET centre, Aarhus University HospitalSiemens HealthineersDepartment of Electrical and Computer Engineering, Aarhus UniversityDepartment of Nuclear Medicine & PET centre, Aarhus University HospitalDepartment of Electrical and Computer Engineering, Aarhus UniversityDepartment of Nuclear Medicine & PET centre, Aarhus University HospitalDepartment of Nuclear Medicine & PET centre, Aarhus University HospitalDepartment of Nuclear Medicine & PET centre, Aarhus University HospitalDepartment of Nuclear Medicine & PET centre, Aarhus University HospitalDepartment of Nuclear Medicine & PET centre, Aarhus University HospitalSiemens Medical Solutions USA, Inc.Siemens Medical Solutions USA, Inc.Siemens Medical Solutions USA, Inc.Abstract Purpose Patients with dementia symptoms often struggle to limit movements during PET examinations, necessitating motion compensation in brain PET imaging to ensure the high image quality needed for diagnostic accuracy. This study validates a data-driven motion-compensated (MoCo) PET brain image reconstruction algorithm that corrects head motion by integrating the detected motion frames and their associated rigid body transformations into the iterative image reconstruction. Validation was conducted using phantom scans, healthy volunteers, and clinical patients using four radiotracers with distinct tracer activity distributions. Methods We conducted technical validation experiments of the algorithm using Hoffman brain phantom scans during a series of controlled movements, followed by two blinded reader studies assessing image quality between standard images and MoCo images in 38 clinical patients receiving dementia scans with [18F]Fluorodeoxyglucose, [18F]N-(3-iodopro-2E-enyl)-2beta-carbomethoxy-3beta-(4’-methylphenyl)-nortropane, [18F]flutemetamol, and a research group comprising 25 elderly subjects scanned with [18F]fluoroethoxybenzovesamicol. Results The Hoffman brain phantom study demonstrated the algorithm’s capability to detect and correct for even minimal movements, 1-mm translations and 1⁰ rotations, applied to the phantom. Within the clinical cohort, where standard images were deemed suboptimal or non-diagnostic, all MoCo images were classified as having acceptable diagnostic quality. In the research cohort, MoCo images consistently matched or surpassed the standard image quality even in cases with minimal head movement, and the MoCo algorithm never led to degraded image quality. Conclusion The PET brain MoCo reconstruction algorithm was robust and worked well for four different tracers with markedly different uptake patterns. Moco images markedly improved the image quality for patients who were unable to lie still during a PET examination and obviated the need for any repeat scans. Thus, the method was clinically feasible and has the potential for improving diagnostic accuracy.https://doi.org/10.1186/s40658-025-00723-wPETBrainDementiaMotion correctionReconstructionData driven |
| spellingShingle | Ole L. Munk Anders B. Rodell Patricia B. Danielsen Josefine R. Madsen Mie T. Sørensen Niels Okkels Jacob Horsager Katrine B. Andersen Per Borghammer Joel Aanerud Judson Jones Inki Hong Sven Zuehlsdorff Validation of a data-driven motion-compensated PET brain image reconstruction algorithm in clinical patients using four radiotracers EJNMMI Physics PET Brain Dementia Motion correction Reconstruction Data driven |
| title | Validation of a data-driven motion-compensated PET brain image reconstruction algorithm in clinical patients using four radiotracers |
| title_full | Validation of a data-driven motion-compensated PET brain image reconstruction algorithm in clinical patients using four radiotracers |
| title_fullStr | Validation of a data-driven motion-compensated PET brain image reconstruction algorithm in clinical patients using four radiotracers |
| title_full_unstemmed | Validation of a data-driven motion-compensated PET brain image reconstruction algorithm in clinical patients using four radiotracers |
| title_short | Validation of a data-driven motion-compensated PET brain image reconstruction algorithm in clinical patients using four radiotracers |
| title_sort | validation of a data driven motion compensated pet brain image reconstruction algorithm in clinical patients using four radiotracers |
| topic | PET Brain Dementia Motion correction Reconstruction Data driven |
| url | https://doi.org/10.1186/s40658-025-00723-w |
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