A Simple Auxiliary Model for Field Amplitude Shaping in Complex Environments, and Application to MRI Shimming
The canonical problem of designing the complex excitations feeding an array such to ensure a desired field intensity distribution inside a given region of interest, while keeping it under control in some other regions, is addressed. To this end, an auxiliary physics inspired model for the induced to...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2022-01-01
|
| Series: | IEEE Open Journal of Antennas and Propagation |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9847381/ |
| _version_ | 1818483686899712000 |
|---|---|
| author | Sabrina Zumbo Tommaso Isernia Martina Teresa Bevacqua |
| author_facet | Sabrina Zumbo Tommaso Isernia Martina Teresa Bevacqua |
| author_sort | Sabrina Zumbo |
| collection | DOAJ |
| description | The canonical problem of designing the complex excitations feeding an array such to ensure a desired field intensity distribution inside a given region of interest, while keeping it under control in some other regions, is addressed. To this end, an auxiliary physics inspired model for the induced total field is proposed, whose off-line analysis allows a simplified approach to understand the convenient and non-convenient field interferences between canonical solutions for the induced total field, that are zero order Bessel functions. Moreover, its analysis drastically reduces the computational burden associated to the <italic>multi-control</italic> points based approaches. The problem at hand plays a key role in many different applications, including radio communications, wireless power transfer as well as hyperthermia treatment planning, and in this paper attention is paid to radiofrequency shimming in magnetic resonance imaging. In fact, the proposed model and tools are tailored to the challenging case of leveling of the magnetic field intensity within an MRI scanner and in case of a bidimensional realistic head phantom. |
| first_indexed | 2024-12-10T15:45:13Z |
| format | Article |
| id | doaj.art-ba114ddfbbf1486e8e9f7de17cb49274 |
| institution | Directory Open Access Journal |
| issn | 2637-6431 |
| language | English |
| last_indexed | 2024-12-10T15:45:13Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Antennas and Propagation |
| spelling | doaj.art-ba114ddfbbf1486e8e9f7de17cb492742022-12-22T01:42:59ZengIEEEIEEE Open Journal of Antennas and Propagation2637-64312022-01-01391793110.1109/OJAP.2022.31956679847381A Simple Auxiliary Model for Field Amplitude Shaping in Complex Environments, and Application to MRI ShimmingSabrina Zumbo0Tommaso Isernia1https://orcid.org/0000-0003-3830-9540Martina Teresa Bevacqua2https://orcid.org/0000-0001-6557-1283Dipartimento di Ingegneria dell’Informazione, delle Infrastrutture e dell’Energia Sostenibile, Università Mediterranea di Reggio Calabria, Reggio Calabria, ItalyDipartimento di Ingegneria dell’Informazione, delle Infrastrutture e dell’Energia Sostenibile, Università Mediterranea di Reggio Calabria, Reggio Calabria, ItalyDipartimento di Ingegneria dell’Informazione, delle Infrastrutture e dell’Energia Sostenibile, Università Mediterranea di Reggio Calabria, Reggio Calabria, ItalyThe canonical problem of designing the complex excitations feeding an array such to ensure a desired field intensity distribution inside a given region of interest, while keeping it under control in some other regions, is addressed. To this end, an auxiliary physics inspired model for the induced total field is proposed, whose off-line analysis allows a simplified approach to understand the convenient and non-convenient field interferences between canonical solutions for the induced total field, that are zero order Bessel functions. Moreover, its analysis drastically reduces the computational burden associated to the <italic>multi-control</italic> points based approaches. The problem at hand plays a key role in many different applications, including radio communications, wireless power transfer as well as hyperthermia treatment planning, and in this paper attention is paid to radiofrequency shimming in magnetic resonance imaging. In fact, the proposed model and tools are tailored to the challenging case of leveling of the magnetic field intensity within an MRI scanner and in case of a bidimensional realistic head phantom.https://ieeexplore.ieee.org/document/9847381/Antenna arrayelectromagnetic fieldinverse problemintensity shapingmagnetic resonance imagingshimming |
| spellingShingle | Sabrina Zumbo Tommaso Isernia Martina Teresa Bevacqua A Simple Auxiliary Model for Field Amplitude Shaping in Complex Environments, and Application to MRI Shimming IEEE Open Journal of Antennas and Propagation Antenna array electromagnetic field inverse problem intensity shaping magnetic resonance imaging shimming |
| title | A Simple Auxiliary Model for Field Amplitude Shaping in Complex Environments, and Application to MRI Shimming |
| title_full | A Simple Auxiliary Model for Field Amplitude Shaping in Complex Environments, and Application to MRI Shimming |
| title_fullStr | A Simple Auxiliary Model for Field Amplitude Shaping in Complex Environments, and Application to MRI Shimming |
| title_full_unstemmed | A Simple Auxiliary Model for Field Amplitude Shaping in Complex Environments, and Application to MRI Shimming |
| title_short | A Simple Auxiliary Model for Field Amplitude Shaping in Complex Environments, and Application to MRI Shimming |
| title_sort | simple auxiliary model for field amplitude shaping in complex environments and application to mri shimming |
| topic | Antenna array electromagnetic field inverse problem intensity shaping magnetic resonance imaging shimming |
| url | https://ieeexplore.ieee.org/document/9847381/ |
| work_keys_str_mv | AT sabrinazumbo asimpleauxiliarymodelforfieldamplitudeshapingincomplexenvironmentsandapplicationtomrishimming AT tommasoisernia asimpleauxiliarymodelforfieldamplitudeshapingincomplexenvironmentsandapplicationtomrishimming AT martinateresabevacqua asimpleauxiliarymodelforfieldamplitudeshapingincomplexenvironmentsandapplicationtomrishimming AT sabrinazumbo simpleauxiliarymodelforfieldamplitudeshapingincomplexenvironmentsandapplicationtomrishimming AT tommasoisernia simpleauxiliarymodelforfieldamplitudeshapingincomplexenvironmentsandapplicationtomrishimming AT martinateresabevacqua simpleauxiliarymodelforfieldamplitudeshapingincomplexenvironmentsandapplicationtomrishimming |