Improvement in the clinical practicability of roentgen stereophotogrammetric analysis (RSA): free from the use of the dual X-ray equipment.
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| Title: | Improvement in the clinical practicability of roentgen stereophotogrammetric analysis (RSA): free from the use of the dual X-ray equipment. |
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| Authors: | Shih KS (AUTHOR), Lee CH (AUTHOR), Syu CB (AUTHOR), Lai JY (AUTHOR), Chen KJ (AUTHOR), Lin SC (AUTHOR), Shih, Kao-Shang1 (AUTHOR), Lee, Chian-Her (AUTHOR), Syu, Ci-Bin (AUTHOR), Lai, Jiing-Yih (AUTHOR), Chen, Kuo-Jen (AUTHOR), Lin, Shang-Chih (AUTHOR) |
| Source: | Proceedings of the Institution of Mechanical Engineers -- Part H -- Journal of Engineering in Medicine (Professional Engineering Publishing). 2012 Oct, Vol. 226 Issue 10, p766-775. 10p. |
| Abstract: | After total knee replacement, the monitoring of the prosthetic performance is often done by roentgenographic examination. However, the two-dimensional (2D) roentgen images only provide information about the projection onto the anteroposterior (AP) and mediolateral (ML) planes. Historically, the model-based roentgen stereophotogrammetric analysis (RSA) technique has been developed to predict the spatial relationship between prostheses by iteratively comparing the projective data for the prosthetic models and the roentgen images. During examination, the prosthetic poses should be stationary. This should be ensured, either by the use of dual synchronized X-ray equipment or by the use of a specific posture. In practice, these methods are uncommon or technically inconvenient during follow-up examination. This study aims to develop a rotation platform to improve the clinical applicability of the model-based RSA technique. The rotation platform allows the patient to assume a weight-bearing posture, while being steadily rotated so that both AP and ML knee images can be obtained. This study uses X-ray equipment with a single source and flat panel detectors (FPDs). Four tests are conducted to evaluate the quality of the FPD images, steadiness of the rotation platform, and accuracy of the RSA results. The results show that the distortion-induced error of the FPD image is quite minor, and the prosthetic size can be cautiously calibrated by means of the scale ball(s). The rotation platform should be placed closer to the FPD and orthogonal to the projection axis of the X-ray source. Image overlap of the prostheses can be avoided by adjusting both X-ray source and knee posture. The device-induced problems associated with the rotation platform include the steadiness of the platform operation and the balance of the rotated subject. Sawbone tests demonstrate that the outline error, due to the platform, is of the order of the image resolution (= 0.145 mm). In conclusion, the rotation platform with steady rotation, a knee support, and a handle can serve as an alternative method to take prosthetic images, without the loss in accuracy associated with the RSA method. [ABSTRACT FROM AUTHOR] |
| Copyright of Proceedings of the Institution of Mechanical Engineers -- Part H -- Journal of Engineering in Medicine (Professional Engineering Publishing) is the property of Professional Engineering Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 108076872 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Improvement in the clinical practicability of roentgen stereophotogrammetric analysis (RSA): free from the use of the dual X-ray equipment. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Shih+KS%22">Shih KS</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lee+CH%22">Lee CH</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Syu+CB%22">Syu CB</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lai+JY%22">Lai JY</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen+KJ%22">Chen KJ</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lin+SC%22">Lin SC</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shih%2C+Kao-Shang%22">Shih, Kao-Shang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lee%2C+Chian-Her%22">Lee, Chian-Her</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Syu%2C+Ci-Bin%22">Syu, Ci-Bin</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lai%2C+Jiing-Yih%22">Lai, Jiing-Yih</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Kuo-Jen%22">Chen, Kuo-Jen</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lin%2C+Shang-Chih%22">Lin, Shang-Chih</searchLink> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Proceedings+of+the+Institution+of+Mechanical+Engineers+--+Part+H+--+Journal+of+Engineering+in+Medicine+%28Professional+Engineering+Publishing%29%22">Proceedings of the Institution of Mechanical Engineers -- Part H -- Journal of Engineering in Medicine (Professional Engineering Publishing)</searchLink>. 2012 Oct, Vol. 226 Issue 10, p766-775. 10p. – Name: Abstract Label: Abstract Group: Ab Data: After total knee replacement, the monitoring of the prosthetic performance is often done by roentgenographic examination. However, the two-dimensional (2D) roentgen images only provide information about the projection onto the anteroposterior (AP) and mediolateral (ML) planes. Historically, the model-based roentgen stereophotogrammetric analysis (RSA) technique has been developed to predict the spatial relationship between prostheses by iteratively comparing the projective data for the prosthetic models and the roentgen images. During examination, the prosthetic poses should be stationary. This should be ensured, either by the use of dual synchronized X-ray equipment or by the use of a specific posture. In practice, these methods are uncommon or technically inconvenient during follow-up examination. This study aims to develop a rotation platform to improve the clinical applicability of the model-based RSA technique. The rotation platform allows the patient to assume a weight-bearing posture, while being steadily rotated so that both AP and ML knee images can be obtained. This study uses X-ray equipment with a single source and flat panel detectors (FPDs). Four tests are conducted to evaluate the quality of the FPD images, steadiness of the rotation platform, and accuracy of the RSA results. The results show that the distortion-induced error of the FPD image is quite minor, and the prosthetic size can be cautiously calibrated by means of the scale ball(s). The rotation platform should be placed closer to the FPD and orthogonal to the projection axis of the X-ray source. Image overlap of the prostheses can be avoided by adjusting both X-ray source and knee posture. The device-induced problems associated with the rotation platform include the steadiness of the platform operation and the balance of the rotated subject. Sawbone tests demonstrate that the outline error, due to the platform, is of the order of the image resolution (= 0.145 mm). In conclusion, the rotation platform with steady rotation, a knee support, and a handle can serve as an alternative method to take prosthetic images, without the loss in accuracy associated with the RSA method. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Proceedings of the Institution of Mechanical Engineers -- Part H -- Journal of Engineering in Medicine (Professional Engineering Publishing) is the property of Professional Engineering Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 766 Titles: – TitleFull: Improvement in the clinical practicability of roentgen stereophotogrammetric analysis (RSA): free from the use of the dual X-ray equipment. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Shih KS – PersonEntity: Name: NameFull: Lee CH – PersonEntity: Name: NameFull: Syu CB – PersonEntity: Name: NameFull: Lai JY – PersonEntity: Name: NameFull: Chen KJ – PersonEntity: Name: NameFull: Lin SC – PersonEntity: Name: NameFull: Shih, Kao-Shang – PersonEntity: Name: NameFull: Lee, Chian-Her – PersonEntity: Name: NameFull: Syu, Ci-Bin – PersonEntity: Name: NameFull: Lai, Jiing-Yih – PersonEntity: Name: NameFull: Chen, Kuo-Jen – PersonEntity: Name: NameFull: Lin, Shang-Chih IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: 2012 Oct Type: published Y: 2012 Identifiers: – Type: issn-print Value: 09544119 Numbering: – Type: volume Value: 226 – Type: issue Value: 10 Titles: – TitleFull: Proceedings of the Institution of Mechanical Engineers -- Part H -- Journal of Engineering in Medicine (Professional Engineering Publishing) Type: main |
| ResultId | 1 |
