Modelling of an ultrasound-based system for cataract detection and classification
Cataract is a cloudiness in the lens of the eye affecting its transparency. Surgical cataract removal is the only therapeutic approach. Phacoemulsification is the most common surgical procedure, in which ultrasound energy is used to emulsify the cataractous lens. The hardness of the cataract determ...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | deu |
| Published: |
NDT.net
2023-08-01
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| Series: | Research and Review Journal of Nondestructive Testing |
| Online Access: | https://www.ndt.net/search/docs.php3?id=28222 |
| _version_ | 1797265965806780416 |
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| author | Mario J. Santos Inês M Conceição Lorena Petralla Fernando Perdigão Jaime Santos Miguel Caixinha Marco Gomes Miguel Morgado |
| author_facet | Mario J. Santos Inês M Conceição Lorena Petralla Fernando Perdigão Jaime Santos Miguel Caixinha Marco Gomes Miguel Morgado |
| author_sort | Mario J. Santos |
| collection | DOAJ |
| description |
Cataract is a cloudiness in the lens of the eye affecting its transparency. Surgical cataract removal is the only therapeutic approach. Phacoemulsification is the most common surgical procedure, in which ultrasound energy is used to emulsify the cataractous lens. The hardness of the cataract determines the optimal energy for the phacoemulsification procedure. The objective of this work is to model an ultrasoundbased system for cataract detection and classification. It was developed a computational tool for simulating the propagation of A-scan ultrasound in the eye, using the k-Wave MATLAB toolbox. Considering the computational resources available and the dimensions of cataractous microstructures, it was determined a suitable resolution that enables the simulation of ultrasound propagation through the cataractous eye in 2D and 3D. Being so, a pixel size of 8 µm was stablished. A matrix representing the eye structures was constructed in MATLAB. Since on simulations it was considered a focalized probe only the central part of the eye matrix was used. It was observed that 2D and 3D simulated signals present some differences, mainly in the amplitudes of the echoes corresponding to the interfaces of the eye. The chosen resolution was suitable for the purpose of this work. The simulation tool shows good versatility for evaluating diverse aspects of A-scan biometry.
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| first_indexed | 2024-04-25T00:53:11Z |
| format | Article |
| id | doaj.art-bb26e42294604759b0a696ada2118752 |
| institution | Directory Open Access Journal |
| issn | 2941-4989 |
| language | deu |
| last_indexed | 2024-04-25T00:53:11Z |
| publishDate | 2023-08-01 |
| publisher | NDT.net |
| record_format | Article |
| series | Research and Review Journal of Nondestructive Testing |
| spelling | doaj.art-bb26e42294604759b0a696ada21187522024-03-11T15:46:45ZdeuNDT.netResearch and Review Journal of Nondestructive Testing2941-49892023-08-011110.58286/28222Modelling of an ultrasound-based system for cataract detection and classificationMario J. SantosInês M ConceiçãoLorena PetrallaFernando PerdigãoJaime SantosMiguel CaixinhaMarco GomesMiguel Morgado Cataract is a cloudiness in the lens of the eye affecting its transparency. Surgical cataract removal is the only therapeutic approach. Phacoemulsification is the most common surgical procedure, in which ultrasound energy is used to emulsify the cataractous lens. The hardness of the cataract determines the optimal energy for the phacoemulsification procedure. The objective of this work is to model an ultrasoundbased system for cataract detection and classification. It was developed a computational tool for simulating the propagation of A-scan ultrasound in the eye, using the k-Wave MATLAB toolbox. Considering the computational resources available and the dimensions of cataractous microstructures, it was determined a suitable resolution that enables the simulation of ultrasound propagation through the cataractous eye in 2D and 3D. Being so, a pixel size of 8 µm was stablished. A matrix representing the eye structures was constructed in MATLAB. Since on simulations it was considered a focalized probe only the central part of the eye matrix was used. It was observed that 2D and 3D simulated signals present some differences, mainly in the amplitudes of the echoes corresponding to the interfaces of the eye. The chosen resolution was suitable for the purpose of this work. The simulation tool shows good versatility for evaluating diverse aspects of A-scan biometry. https://www.ndt.net/search/docs.php3?id=28222 |
| spellingShingle | Mario J. Santos Inês M Conceição Lorena Petralla Fernando Perdigão Jaime Santos Miguel Caixinha Marco Gomes Miguel Morgado Modelling of an ultrasound-based system for cataract detection and classification Research and Review Journal of Nondestructive Testing |
| title | Modelling of an ultrasound-based system for cataract detection and classification |
| title_full | Modelling of an ultrasound-based system for cataract detection and classification |
| title_fullStr | Modelling of an ultrasound-based system for cataract detection and classification |
| title_full_unstemmed | Modelling of an ultrasound-based system for cataract detection and classification |
| title_short | Modelling of an ultrasound-based system for cataract detection and classification |
| title_sort | modelling of an ultrasound based system for cataract detection and classification |
| url | https://www.ndt.net/search/docs.php3?id=28222 |
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