Coronary stent imaging in photon counting computed Tomography : Optimization of reconstruction kernels in a phantom
Copyright © 2023 Elsevier B.V. All rights reserved..
PURPOSE: Imaging stents and in-stent stenosis remains a challenge in coronary computed tomography angiography (CCTA). In comparison to conventional Computed Tomography, Photon Counting CT (PCCT) provides decisive clinical advantages, among other things by providing low dose ultra-high resolution imaging of coronary arteries. This work investigates the image quality in CCTA using clinically established kernels and those optimized for the imaging of cardiac stents in PCCT, both for in-vitro stent imaging in 400 μm standard resolution mode (SRM) and 200 μm Ultra High Resolution Mode (UHR).
METHODS: Based on experimental scans, vascular reconstruction kernels (Bv56, Bv64, Bv72) were optimized. In an established phantom, 10 different coronary stents with 3 mm diameter were scanned in the first clinically available PCCT. Scans were reconstructed with clinically established and optimized kernels. Four readers measured visible stent lumen, performed ROI-based density measurements and rated image quality.
RESULTS: Regarding the visible stent lumen, UHR is significantly superior to SRM (p < 0.001). In all levels, the optimized kernels are superior to the clinically established kernels (p < 0.001). One optimized kernel showed a significant reduction of noise compared to the clinically established kernels. Overall image quality is improved with optimized kernels.
CONCLUSIONS: In a phantom study PCCT UHR with optimized kernels for stent imaging significantly improves the ability to assess the in-stent lumen of small cardiac stents. We recommend using UHR with an optimized sharp vascular reconstruction kernel (Bv72uo) for imaging of cardiac stent.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:166 |
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| Enthalten in: |
European journal of radiology - 166(2023) vom: 15. Sept., Seite 110983 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Michael, Arwed Elias [VerfasserIn] |
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| Links: |
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| Themen: |
Cardiac stents |
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| Anmerkungen: |
Date Completed 22.08.2023 Date Revised 22.08.2023 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.ejrad.2023.110983 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM359808999 |
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| 100 | 1 | |a Michael, Arwed Elias |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Coronary stent imaging in photon counting computed Tomography |b Optimization of reconstruction kernels in a phantom |
| 264 | 1 | |c 2023 | |
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| 500 | |a Date Completed 22.08.2023 | ||
| 500 | |a Date Revised 22.08.2023 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2023 Elsevier B.V. All rights reserved. | ||
| 520 | |a PURPOSE: Imaging stents and in-stent stenosis remains a challenge in coronary computed tomography angiography (CCTA). In comparison to conventional Computed Tomography, Photon Counting CT (PCCT) provides decisive clinical advantages, among other things by providing low dose ultra-high resolution imaging of coronary arteries. This work investigates the image quality in CCTA using clinically established kernels and those optimized for the imaging of cardiac stents in PCCT, both for in-vitro stent imaging in 400 μm standard resolution mode (SRM) and 200 μm Ultra High Resolution Mode (UHR) | ||
| 520 | |a METHODS: Based on experimental scans, vascular reconstruction kernels (Bv56, Bv64, Bv72) were optimized. In an established phantom, 10 different coronary stents with 3 mm diameter were scanned in the first clinically available PCCT. Scans were reconstructed with clinically established and optimized kernels. Four readers measured visible stent lumen, performed ROI-based density measurements and rated image quality | ||
| 520 | |a RESULTS: Regarding the visible stent lumen, UHR is significantly superior to SRM (p < 0.001). In all levels, the optimized kernels are superior to the clinically established kernels (p < 0.001). One optimized kernel showed a significant reduction of noise compared to the clinically established kernels. Overall image quality is improved with optimized kernels | ||
| 520 | |a CONCLUSIONS: In a phantom study PCCT UHR with optimized kernels for stent imaging significantly improves the ability to assess the in-stent lumen of small cardiac stents. We recommend using UHR with an optimized sharp vascular reconstruction kernel (Bv72uo) for imaging of cardiac stent | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Cardiac stents | |
| 650 | 4 | |a Coronary computed tomography angiography | |
| 650 | 4 | |a Photon counting computed tomography | |
| 650 | 4 | |a Photon counting detector | |
| 650 | 4 | |a Reconstruction kernel | |
| 650 | 4 | |a Stent imaging | |
| 700 | 1 | |a Schoenbeck, Denise |e verfasserin |4 aut | |
| 700 | 1 | |a Becker-Assmann, Jendrik |e verfasserin |4 aut | |
| 700 | 1 | |a Niehoff, Julius Henning |e verfasserin |4 aut | |
| 700 | 1 | |a Flohr, Thomas |e verfasserin |4 aut | |
| 700 | 1 | |a Schmidt, Bernhard |e verfasserin |4 aut | |
| 700 | 1 | |a Panknin, Christoph |e verfasserin |4 aut | |
| 700 | 1 | |a Baer-Beck, Matthias |e verfasserin |4 aut | |
| 700 | 1 | |a Hickethier, Tilman |e verfasserin |4 aut | |
| 700 | 1 | |a Maintz, David |e verfasserin |4 aut | |
| 700 | 1 | |a Bunck, Alexander Christian |e verfasserin |4 aut | |
| 700 | 1 | |a Borggrefe, Jan |e verfasserin |4 aut | |
| 700 | 1 | |a Wiemer, Marcus |e verfasserin |4 aut | |
| 700 | 1 | |a Rudolph, Volker |e verfasserin |4 aut | |
| 700 | 1 | |a Kroeger, Jan Robert |e verfasserin |4 aut | |
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