Evaluating small coronary stents with dual-source photon-counting computed tomography: effect of different scan modes on image quality and performance in a phantom
PURPOSE: The study aimed to assess the feasibility and image quality of dual-source photon-counting detector computed tomography (PCD-CT) in evaluating small-sized coronary artery stents with respect to different acquisition modes in a phantom model. METHODS: Utilizing a phantom setup mimicking the...
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| Format: | Article |
| Language: | English |
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Galenos Publishing House
2025-01-01
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| Series: | Diagnostic and Interventional Radiology |
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| Online Access: | https://www.dirjournal.org/articles/evaluating-small-coronary-stents-with-dual-source-photon-counting-computed-tomography-effect-of-different-scan-modes-on-image-quality-and-performance-in-a-phantom/doi/dir.2024.242893 |
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| author | Thomas Stein Constantin von zur Muhlen Niklas Verloh Till Schürmann Tobias Krauss Martin Soschynski Dirk Westermann Jana Taron Elif Can Christopher L. Schlett Fabian Bamberg Christopher Schuppert Muhammad Taha Hagar |
| author_facet | Thomas Stein Constantin von zur Muhlen Niklas Verloh Till Schürmann Tobias Krauss Martin Soschynski Dirk Westermann Jana Taron Elif Can Christopher L. Schlett Fabian Bamberg Christopher Schuppert Muhammad Taha Hagar |
| author_sort | Thomas Stein |
| collection | DOAJ |
| description | PURPOSE: The study aimed to assess the feasibility and image quality of dual-source photon-counting detector computed tomography (PCD-CT) in evaluating small-sized coronary artery stents with respect to different acquisition modes in a phantom model.
METHODS: Utilizing a phantom setup mimicking the average patient’s water-equivalent diameter, we examined six distinct coronary stents inflated in a silicon tube, with stent sizes ranging from 2.0 to 3.5 mm, applying four different CT acquisition modes of a dual-source PCD-CT scanner: “high-pitch,” “sequential,” “spiral” (each with collimation of 144 × 0.4 mm and full spectral information), and “ultra-high-resolution (UHR)” (collimation of 120 × 0.2 mm and no spectral information). Image quality and diagnostic confidence were assessed using subjective measures, including a 4-point visual grading scale (4 = excellent; 1 = non-diagnostic) utilized by two independent radiologists, and objective measures, including the full width at half maximum (FWHM).
RESULTS: A total of 24 scans were acquired, and all were included in the analysis. Among all CT acquisition modes, the highest image quality was obtained for the UHR mode [median score: 4 (interquartile range (IQR): 3.67–4.00)] (P = 0.0015, with 37.5% rated as “excellent”), followed by the sequential mode [median score: 3.5 (IQR: 2.84–4.00)], P = 0.0326 and the spiral mode [median score: 3.0 (IQR: 2.53–3.47), P > 0.05]. The lowest image quality was observed for the high-pitch mode [median score: 2 (IQR: 1– 3), P = 0.028]. Similarly, diagnostic confidence for evaluating stent patency was highest for UHR and lowest for high-pitch (P < 0.001, respectively). Measurement of stent dimensions was accurate for all acquisition modes, with the UHR mode showing highest robustness (FWHM for sequential: 0.926 ± 0.061 vs. high-pitch: 0.990 ± 0.083 vs. spiral: 0.962 ± 0.085 vs. UHR: 0.941 ± 0.036, P = non-significant, respectively).
CONCLUSION: Assessing small-sized coronary stents using PCD-CT technology is feasible. The UHR mode offers superior image quality and diagnostic confidence, while all modes show consistent and accurate measurements.
CLINICAL SIGNIFICANCE: These findings highlight the potential of PCD-CT technology, particularly the UHR mode, to enhance non-invasive coronary stent evaluation. Confirmatory research is necessary to influence the guidelines, which recommend cardiac CT only for stents of 3 mm or larger. |
| format | Article |
| id | doaj-art-04caa6b09d8d455c9aacfa1b6bffbc3f |
| institution | Kabale University |
| issn | 1305-3825 1305-3612 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Galenos Publishing House |
| record_format | Article |
| series | Diagnostic and Interventional Radiology |
| spelling | doaj-art-04caa6b09d8d455c9aacfa1b6bffbc3f2025-01-07T07:14:41ZengGalenos Publishing HouseDiagnostic and Interventional Radiology1305-38251305-36122025-01-01311293810.4274/dir.2024.242893Evaluating small coronary stents with dual-source photon-counting computed tomography: effect of different scan modes on image quality and performance in a phantomThomas Stein0https://orcid.org/0009-0002-3277-269XConstantin von zur Muhlen1https://orcid.org/0000-0003-2767-8009Niklas Verloh2https://orcid.org/0000-0002-8424-5827Till Schürmann3https://orcid.org/0009-0004-4230-7681Tobias Krauss4https://orcid.org/0009-0005-7343-4453Martin Soschynski5https://orcid.org/0000-0001-6314-1829Dirk Westermann6https://orcid.org/0000-0002-7542-1956Jana Taron7https://orcid.org/0000-0002-1388-7531Elif Can8https://orcid.org/0000-0001-5319-7570Christopher L. Schlett9https://orcid.org/0000-0002-1576-1481Fabian Bamberg10https://orcid.org/0000-0002-7460-3942Christopher Schuppert11https://orcid.org/0000-0002-9675-803XMuhammad Taha Hagar12https://orcid.org/0000-0001-9826-2372Medical Center-University of Freiburg Faculty of Medicine, Department of Diagnostic and Interventional Radiology, Freiburg, GermanyMedical Center-University of Freiburg Faculty of Medicine, Department of Cardiology and Angiology, Freiburg, GermanyMedical Center-University of Freiburg Faculty of Medicine, Department of Diagnostic and Interventional Radiology, Freiburg, GermanyMedical Center-University of Freiburg Faculty of Medicine, Department of Diagnostic and Interventional Radiology, Freiburg, GermanyMedical Center-University of Freiburg Faculty of Medicine, Department of Diagnostic and Interventional Radiology, Freiburg, GermanyMedical Center-University of Freiburg Faculty of Medicine, Department of Diagnostic and Interventional Radiology, Freiburg, GermanyMedical Center-University of Freiburg Faculty of Medicine, Department of Cardiology and Angiology, Freiburg, GermanyMedical Center-University of Freiburg Faculty of Medicine, Department of Diagnostic and Interventional Radiology, Freiburg, GermanyMedical Center-University of Freiburg Faculty of Medicine, Department of Diagnostic and Interventional Radiology, Freiburg, GermanyMedical Center-University of Freiburg Faculty of Medicine, Department of Diagnostic and Interventional Radiology, Freiburg, GermanyMedical Center-University of Freiburg Faculty of Medicine, Department of Diagnostic and Interventional Radiology, Freiburg, GermanyMedical Center-University of Freiburg Faculty of Medicine, Department of Diagnostic and Interventional Radiology, Freiburg, GermanyMedical Center-University of Freiburg Faculty of Medicine, Department of Diagnostic and Interventional Radiology, Freiburg, GermanyPURPOSE: The study aimed to assess the feasibility and image quality of dual-source photon-counting detector computed tomography (PCD-CT) in evaluating small-sized coronary artery stents with respect to different acquisition modes in a phantom model. METHODS: Utilizing a phantom setup mimicking the average patient’s water-equivalent diameter, we examined six distinct coronary stents inflated in a silicon tube, with stent sizes ranging from 2.0 to 3.5 mm, applying four different CT acquisition modes of a dual-source PCD-CT scanner: “high-pitch,” “sequential,” “spiral” (each with collimation of 144 × 0.4 mm and full spectral information), and “ultra-high-resolution (UHR)” (collimation of 120 × 0.2 mm and no spectral information). Image quality and diagnostic confidence were assessed using subjective measures, including a 4-point visual grading scale (4 = excellent; 1 = non-diagnostic) utilized by two independent radiologists, and objective measures, including the full width at half maximum (FWHM). RESULTS: A total of 24 scans were acquired, and all were included in the analysis. Among all CT acquisition modes, the highest image quality was obtained for the UHR mode [median score: 4 (interquartile range (IQR): 3.67–4.00)] (P = 0.0015, with 37.5% rated as “excellent”), followed by the sequential mode [median score: 3.5 (IQR: 2.84–4.00)], P = 0.0326 and the spiral mode [median score: 3.0 (IQR: 2.53–3.47), P > 0.05]. The lowest image quality was observed for the high-pitch mode [median score: 2 (IQR: 1– 3), P = 0.028]. Similarly, diagnostic confidence for evaluating stent patency was highest for UHR and lowest for high-pitch (P < 0.001, respectively). Measurement of stent dimensions was accurate for all acquisition modes, with the UHR mode showing highest robustness (FWHM for sequential: 0.926 ± 0.061 vs. high-pitch: 0.990 ± 0.083 vs. spiral: 0.962 ± 0.085 vs. UHR: 0.941 ± 0.036, P = non-significant, respectively). CONCLUSION: Assessing small-sized coronary stents using PCD-CT technology is feasible. The UHR mode offers superior image quality and diagnostic confidence, while all modes show consistent and accurate measurements. CLINICAL SIGNIFICANCE: These findings highlight the potential of PCD-CT technology, particularly the UHR mode, to enhance non-invasive coronary stent evaluation. Confirmatory research is necessary to influence the guidelines, which recommend cardiac CT only for stents of 3 mm or larger.https://www.dirjournal.org/articles/evaluating-small-coronary-stents-with-dual-source-photon-counting-computed-tomography-effect-of-different-scan-modes-on-image-quality-and-performance-in-a-phantom/doi/dir.2024.242893computed tomographycoronary arterystentstechnology |
| spellingShingle | Thomas Stein Constantin von zur Muhlen Niklas Verloh Till Schürmann Tobias Krauss Martin Soschynski Dirk Westermann Jana Taron Elif Can Christopher L. Schlett Fabian Bamberg Christopher Schuppert Muhammad Taha Hagar Evaluating small coronary stents with dual-source photon-counting computed tomography: effect of different scan modes on image quality and performance in a phantom Diagnostic and Interventional Radiology computed tomography coronary artery stents technology |
| title | Evaluating small coronary stents with dual-source photon-counting computed tomography: effect of different scan modes on image quality and performance in a phantom |
| title_full | Evaluating small coronary stents with dual-source photon-counting computed tomography: effect of different scan modes on image quality and performance in a phantom |
| title_fullStr | Evaluating small coronary stents with dual-source photon-counting computed tomography: effect of different scan modes on image quality and performance in a phantom |
| title_full_unstemmed | Evaluating small coronary stents with dual-source photon-counting computed tomography: effect of different scan modes on image quality and performance in a phantom |
| title_short | Evaluating small coronary stents with dual-source photon-counting computed tomography: effect of different scan modes on image quality and performance in a phantom |
| title_sort | evaluating small coronary stents with dual source photon counting computed tomography effect of different scan modes on image quality and performance in a phantom |
| topic | computed tomography coronary artery stents technology |
| url | https://www.dirjournal.org/articles/evaluating-small-coronary-stents-with-dual-source-photon-counting-computed-tomography-effect-of-different-scan-modes-on-image-quality-and-performance-in-a-phantom/doi/dir.2024.242893 |
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