Dual-Source CT Angiography of Peripheral Arterial Stents: In Vitro Evaluation of 22 Different Stent Types
Purpose. To test different peripheral arterial stents using four image reconstruction approaches with respect to lumen visualization, lumen attenuation and image noise in dual-source multidetector row CT (DSCT) in vitro. Methods and Materials. 22 stents (nitinol, steel, cobalt-alloy, tantalum, plati...
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | Radiology Research and Practice |
| Online Access: | http://dx.doi.org/10.1155/2011/103873 |
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| author | Michael Köhler Matthias C. Burg Alexander C. Bunck Walter Heindel Harald Seifarth David Maintz |
| author_facet | Michael Köhler Matthias C. Burg Alexander C. Bunck Walter Heindel Harald Seifarth David Maintz |
| author_sort | Michael Köhler |
| collection | DOAJ |
| description | Purpose. To test different peripheral arterial stents using four image reconstruction approaches with respect to lumen visualization, lumen attenuation and image noise in dual-source multidetector row CT (DSCT) in vitro. Methods and Materials. 22 stents (nitinol, steel, cobalt-alloy, tantalum, platinum alloy) were examined in a vessel phantom. All stents were imaged in axial orientation with standard parameters. Image reconstructions were obtained with four different convolution kernels. To evaluate visualization characteristics of the stent, the lumen diameter, intraluminal density and noise were measured. Results. The mean percentage of the visible stent lumen diameter from the nominal stent diameter was 74.5% ± 5.7 for the medium-sharp kernel, 72.8% ± 6.4 for the medium, 70.8% ± 6.4 for the medium-smooth and 67.6% ± 6.6 for the smooth kernel. Mean values of lumen attenuation were 299.7HU ± 127 (medium-sharp), 273.9HU ± 68 (medium), 270.7HU ± 53 (medium-smooth) and 265.8HU ± 43. Mean image noise was: 54.6 ± 6.3, 20.5 ± 1.7, 16.3 ± 1.7, 14.0 ± 2 respectively. Conclusion. Visible stent lumen diameter varies depending on stent type and scan parameters. Lumen diameter visibility increases with the sharpness of the reconstruction kernel. Smoother kernels provide more realistic density measurements inside the stent lumen and less image noise. |
| format | Article |
| id | doaj-art-e6bf880629e74d6c97df931041f763d0 |
| institution | Kabale University |
| issn | 2090-1941 2090-195X |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Radiology Research and Practice |
| spelling | doaj-art-e6bf880629e74d6c97df931041f763d02025-02-03T07:26:06ZengWileyRadiology Research and Practice2090-19412090-195X2011-01-01201110.1155/2011/103873103873Dual-Source CT Angiography of Peripheral Arterial Stents: In Vitro Evaluation of 22 Different Stent TypesMichael Köhler0Matthias C. Burg1Alexander C. Bunck2Walter Heindel3Harald Seifarth4David Maintz5Department of Clinical Radiology, University of Münster, Albert-Schweitzer-Straβe 33, 48129 Münster, GermanyDepartment of Clinical Radiology, University of Münster, Albert-Schweitzer-Straβe 33, 48129 Münster, GermanyDepartment of Clinical Radiology, University of Münster, Albert-Schweitzer-Straβe 33, 48129 Münster, GermanyDepartment of Clinical Radiology, University of Münster, Albert-Schweitzer-Straβe 33, 48129 Münster, GermanyDepartment of Clinical Radiology, University of Münster, Albert-Schweitzer-Straβe 33, 48129 Münster, GermanyDepartment of Clinical Radiology, University of Münster, Albert-Schweitzer-Straβe 33, 48129 Münster, GermanyPurpose. To test different peripheral arterial stents using four image reconstruction approaches with respect to lumen visualization, lumen attenuation and image noise in dual-source multidetector row CT (DSCT) in vitro. Methods and Materials. 22 stents (nitinol, steel, cobalt-alloy, tantalum, platinum alloy) were examined in a vessel phantom. All stents were imaged in axial orientation with standard parameters. Image reconstructions were obtained with four different convolution kernels. To evaluate visualization characteristics of the stent, the lumen diameter, intraluminal density and noise were measured. Results. The mean percentage of the visible stent lumen diameter from the nominal stent diameter was 74.5% ± 5.7 for the medium-sharp kernel, 72.8% ± 6.4 for the medium, 70.8% ± 6.4 for the medium-smooth and 67.6% ± 6.6 for the smooth kernel. Mean values of lumen attenuation were 299.7HU ± 127 (medium-sharp), 273.9HU ± 68 (medium), 270.7HU ± 53 (medium-smooth) and 265.8HU ± 43. Mean image noise was: 54.6 ± 6.3, 20.5 ± 1.7, 16.3 ± 1.7, 14.0 ± 2 respectively. Conclusion. Visible stent lumen diameter varies depending on stent type and scan parameters. Lumen diameter visibility increases with the sharpness of the reconstruction kernel. Smoother kernels provide more realistic density measurements inside the stent lumen and less image noise.http://dx.doi.org/10.1155/2011/103873 |
| spellingShingle | Michael Köhler Matthias C. Burg Alexander C. Bunck Walter Heindel Harald Seifarth David Maintz Dual-Source CT Angiography of Peripheral Arterial Stents: In Vitro Evaluation of 22 Different Stent Types Radiology Research and Practice |
| title | Dual-Source CT Angiography of Peripheral Arterial Stents: In Vitro Evaluation of 22 Different Stent Types |
| title_full | Dual-Source CT Angiography of Peripheral Arterial Stents: In Vitro Evaluation of 22 Different Stent Types |
| title_fullStr | Dual-Source CT Angiography of Peripheral Arterial Stents: In Vitro Evaluation of 22 Different Stent Types |
| title_full_unstemmed | Dual-Source CT Angiography of Peripheral Arterial Stents: In Vitro Evaluation of 22 Different Stent Types |
| title_short | Dual-Source CT Angiography of Peripheral Arterial Stents: In Vitro Evaluation of 22 Different Stent Types |
| title_sort | dual source ct angiography of peripheral arterial stents in vitro evaluation of 22 different stent types |
| url | http://dx.doi.org/10.1155/2011/103873 |
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