Photon-Counting Detector CT Virtual Monoengergetic Images for Cochlear Implant Visualization—A Head to Head Comparison to Energy-Integrating Detector CT
Cochlear implants (CIs) are the primary treatment method in patients with profound sensorineural hearing loss. Interpretation of postoperative imaging with conventional energy-integrating detector computed tomography (EID-CT) following CI surgery remains challenging due to metal artifacts. Still, th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Tomography |
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| Online Access: | https://www.mdpi.com/2379-139X/8/4/136 |
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| author | Stephan Waldeck Daniel Overhoff Leona Alizadeh Benjamin V. Becker Matthias Port Matthias F. Froelich Marc A. Brockmann Sven Schumann Thomas J. Vogl Stefan O. Schoenberg Sandra Schmidt |
| author_facet | Stephan Waldeck Daniel Overhoff Leona Alizadeh Benjamin V. Becker Matthias Port Matthias F. Froelich Marc A. Brockmann Sven Schumann Thomas J. Vogl Stefan O. Schoenberg Sandra Schmidt |
| author_sort | Stephan Waldeck |
| collection | DOAJ |
| description | Cochlear implants (CIs) are the primary treatment method in patients with profound sensorineural hearing loss. Interpretation of postoperative imaging with conventional energy-integrating detector computed tomography (EID-CT) following CI surgery remains challenging due to metal artifacts. Still, the photon-counting detector (PCD-CT) is a new emerging technology with the potential to eliminate these problems. This study evaluated the performance of virtual monoenergetic (VME) EID-CT images versus PCD-CT in CI imaging. In this cadaveric study, two temporal bone specimens with implanted CIs were scanned with EID-CT and PCD-CT. The images were assessed according to the visibility of interelectrode wire, size of electrode contact, and diameter of halo artifacts. The visibility of interelectrode wire sections was significantly higher when reviewing PCD-CT images. The difference in diameter measurements for electrode contacts between the two CT scanner modalities showed that the PCD-CT technology generally led to significantly larger diameter readings. The larger measurements were closer to the manufacturer’s specifications for the CI electrode. The size of halo artifacts surrounding the electrode contacts did not differ significantly between the two imaging modalities. PCT-CT imaging is a promising technology for CI imaging with improved spatial resolution and better visibility of small structures than conventional EID-CT. |
| first_indexed | 2024-03-10T01:54:51Z |
| format | Article |
| id | doaj.art-4696a4007538485293039e88f6cea46c |
| institution | Directory Open Access Journal |
| issn | 2379-1381 2379-139X |
| language | English |
| last_indexed | 2024-03-10T01:54:51Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Tomography |
| spelling | doaj.art-4696a4007538485293039e88f6cea46c2023-11-23T12:58:01ZengMDPI AGTomography2379-13812379-139X2022-06-01841642164810.3390/tomography8040136Photon-Counting Detector CT Virtual Monoengergetic Images for Cochlear Implant Visualization—A Head to Head Comparison to Energy-Integrating Detector CTStephan Waldeck0Daniel Overhoff1Leona Alizadeh2Benjamin V. Becker3Matthias Port4Matthias F. Froelich5Marc A. Brockmann6Sven Schumann7Thomas J. Vogl8Stefan O. Schoenberg9Sandra Schmidt10Department of Diagnostic and Interventional Radiology and Neuroradiology, Bundeswehr Central Hospital Koblenz, Rübenacher Straße 170, 56072 Koblenz, GermanyDepartment of Diagnostic and Interventional Radiology and Neuroradiology, Bundeswehr Central Hospital Koblenz, Rübenacher Straße 170, 56072 Koblenz, GermanyDepartment of Diagnostic and Interventional Radiology and Neuroradiology, Bundeswehr Central Hospital Koblenz, Rübenacher Straße 170, 56072 Koblenz, GermanyDepartment of Diagnostic and Interventional Radiology and Neuroradiology, Bundeswehr Central Hospital Koblenz, Rübenacher Straße 170, 56072 Koblenz, GermanyBundeswehr Institute of Radiobiology, Neuherbergstraße 11, 80937 München, GermanyDepartment of Radiology and Nuclear Medicine, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1–3, 68167 Mannheim, GermanyInstitute of Neuroradiology, University Medical Centre, Johannes Gutenberg University Mainz, Langenbeckstraße 1, 55131 Mainz, GermanyInstitute of Anatomy, University Medical Center, Johannes Gutenberg-University Mainz, 55131 Mainz, GermanyDepartment of Diagnostic and Interventional Radiology, University Hospital Frankfurt, 60590 Frankfurt am Main, GermanyDepartment of Radiology and Nuclear Medicine, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Theodor-Kutzer-Ufer 1–3, 68167 Mannheim, GermanyDepartment of ENT Surgery, Bundeswehr Central Hospital Koblenz, Rübenacher Straße 170, 56072 Koblenz, GermanyCochlear implants (CIs) are the primary treatment method in patients with profound sensorineural hearing loss. Interpretation of postoperative imaging with conventional energy-integrating detector computed tomography (EID-CT) following CI surgery remains challenging due to metal artifacts. Still, the photon-counting detector (PCD-CT) is a new emerging technology with the potential to eliminate these problems. This study evaluated the performance of virtual monoenergetic (VME) EID-CT images versus PCD-CT in CI imaging. In this cadaveric study, two temporal bone specimens with implanted CIs were scanned with EID-CT and PCD-CT. The images were assessed according to the visibility of interelectrode wire, size of electrode contact, and diameter of halo artifacts. The visibility of interelectrode wire sections was significantly higher when reviewing PCD-CT images. The difference in diameter measurements for electrode contacts between the two CT scanner modalities showed that the PCD-CT technology generally led to significantly larger diameter readings. The larger measurements were closer to the manufacturer’s specifications for the CI electrode. The size of halo artifacts surrounding the electrode contacts did not differ significantly between the two imaging modalities. PCT-CT imaging is a promising technology for CI imaging with improved spatial resolution and better visibility of small structures than conventional EID-CT.https://www.mdpi.com/2379-139X/8/4/136cochlear implantspatial resolutionhigh-resolution computed tomographymetal artifactsvirtual monoenergetic imagingphoton-counting detector CT |
| spellingShingle | Stephan Waldeck Daniel Overhoff Leona Alizadeh Benjamin V. Becker Matthias Port Matthias F. Froelich Marc A. Brockmann Sven Schumann Thomas J. Vogl Stefan O. Schoenberg Sandra Schmidt Photon-Counting Detector CT Virtual Monoengergetic Images for Cochlear Implant Visualization—A Head to Head Comparison to Energy-Integrating Detector CT Tomography cochlear implant spatial resolution high-resolution computed tomography metal artifacts virtual monoenergetic imaging photon-counting detector CT |
| title | Photon-Counting Detector CT Virtual Monoengergetic Images for Cochlear Implant Visualization—A Head to Head Comparison to Energy-Integrating Detector CT |
| title_full | Photon-Counting Detector CT Virtual Monoengergetic Images for Cochlear Implant Visualization—A Head to Head Comparison to Energy-Integrating Detector CT |
| title_fullStr | Photon-Counting Detector CT Virtual Monoengergetic Images for Cochlear Implant Visualization—A Head to Head Comparison to Energy-Integrating Detector CT |
| title_full_unstemmed | Photon-Counting Detector CT Virtual Monoengergetic Images for Cochlear Implant Visualization—A Head to Head Comparison to Energy-Integrating Detector CT |
| title_short | Photon-Counting Detector CT Virtual Monoengergetic Images for Cochlear Implant Visualization—A Head to Head Comparison to Energy-Integrating Detector CT |
| title_sort | photon counting detector ct virtual monoengergetic images for cochlear implant visualization a head to head comparison to energy integrating detector ct |
| topic | cochlear implant spatial resolution high-resolution computed tomography metal artifacts virtual monoenergetic imaging photon-counting detector CT |
| url | https://www.mdpi.com/2379-139X/8/4/136 |
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