Advanced virtual monoenergetic imaging algorithm for lower extremity computed tomography angiography: effects on image quality, artifacts, and peripheral arterial disease evaluation
PURPOSETo investigate the image quality of lower extremity computed tomography angiography (LE-CTA) using a reconstruction algorithm for monoenergetic images (MEIs) to evaluate peripheral arterial disease (PAD) at different kiloelectron volt (keV) levels.METHODSA total of 146 consecutive patients wh...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Galenos Publishing House
2023-01-01
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| Series: | Diagnostic and Interventional Radiology |
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| Online Access: |
http://www.dirjournal.org/archives/archive-detail/article-preview/advanced-virtual-monoenergetic-imaging-algorithm-f/57266
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| _version_ | 1797691451296972800 |
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| author | Jung Han Hwang Jin Mo Kang Suyoung Park So Hyun Park Jeong Ho Kim Ki Hyun Lee Ji Hoon Shin Seong Yong Pak |
| author_facet | Jung Han Hwang Jin Mo Kang Suyoung Park So Hyun Park Jeong Ho Kim Ki Hyun Lee Ji Hoon Shin Seong Yong Pak |
| author_sort | Jung Han Hwang |
| collection | DOAJ |
| description | PURPOSETo investigate the image quality of lower extremity computed tomography angiography (LE-CTA) using a reconstruction algorithm for monoenergetic images (MEIs) to evaluate peripheral arterial disease (PAD) at different kiloelectron volt (keV) levels.METHODSA total of 146 consecutive patients who underwent LE-CTA on a dual-energy scanner to obtain MEIs at 40, 50, 60, 70, and 80 keV were included. The overall image quality, segmental image quality of the arteries and PAD segments, venous contamination, and metal artifacts from prostheses, which may compromise quality, were analyzed.RESULTSThe mean overall image quality of each MEI was 2.9 ± 0.7, 3.6 ± 0.6, 3.9 ± 0.3, 4.0 ± 0.2, and 4.0 ± 0.2 from 40 to 80 keV, respectively. The segmental image quality gradually increased from 40 to 70–80 keV until reaching its highest value. Among 295 PAD segments in 68 patients, 40 (13.6%) were scored at 1–2 at 40 keV and 13 (4.4%) were scored at 2 at 50 keV, indicating unsatisfactory image quality due to the indistinguishability between high-contrast areas and arterial calcifications. The segments exhibiting metal artifacts and venous contamination were reduced at 70–80 keV (2.6 ± 1.2, 2.7 ± 0.5) compared with at 40 keV (2.4 ± 1.1, 2.5 ± 0.7).CONCLUSIONThe LE-CTA method using a reconstruction algorithm for MEIs at 70–80 keV can enhance the image quality for PAD evaluation and improve mitigate venous contamination and metal artifacts. |
| first_indexed | 2024-03-12T02:13:30Z |
| format | Article |
| id | doaj.art-caae34da94c641a9a47cf7e9b47f26ed |
| institution | Directory Open Access Journal |
| issn | 1305-3825 1305-3612 |
| language | English |
| last_indexed | 2024-03-12T02:13:30Z |
| publishDate | 2023-01-01 |
| publisher | Galenos Publishing House |
| record_format | Article |
| series | Diagnostic and Interventional Radiology |
| spelling | doaj.art-caae34da94c641a9a47cf7e9b47f26ed2023-09-06T11:58:03ZengGalenos Publishing HouseDiagnostic and Interventional Radiology1305-38251305-36122023-01-0129117518210.5152/dir.2022.2155113049054Advanced virtual monoenergetic imaging algorithm for lower extremity computed tomography angiography: effects on image quality, artifacts, and peripheral arterial disease evaluationJung Han Hwang0Jin Mo Kang1Suyoung Park2So Hyun Park3Jeong Ho Kim4Ki Hyun Lee5Ji Hoon Shin6Seong Yong Pak7 Department of Radiology, Gachon University College of Medicine, Gil Medical Center, Incheon, South Korea Department of Surgery, Gachon University College of Medicine, Incheon, South Korea Department of Radiology, Gachon University College of Medicine, Gil Medical Center, Incheon, South Korea Department of Radiology, Gachon University College of Medicine, Gil Medical Center, Incheon, South Korea Department of Radiology, Gachon University College of Medicine, Gil Medical Center, Incheon, South Korea Department of Radiology, Gachon University College of Medicine, Gil Medical Center, Incheon, South Korea Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea Department of Biomedical Engineering, University of Ulsan College of Medicine, Asan Medical Institute of Convergence Science and Technology, Asan Medical Center, Seoul, South Korea PURPOSETo investigate the image quality of lower extremity computed tomography angiography (LE-CTA) using a reconstruction algorithm for monoenergetic images (MEIs) to evaluate peripheral arterial disease (PAD) at different kiloelectron volt (keV) levels.METHODSA total of 146 consecutive patients who underwent LE-CTA on a dual-energy scanner to obtain MEIs at 40, 50, 60, 70, and 80 keV were included. The overall image quality, segmental image quality of the arteries and PAD segments, venous contamination, and metal artifacts from prostheses, which may compromise quality, were analyzed.RESULTSThe mean overall image quality of each MEI was 2.9 ± 0.7, 3.6 ± 0.6, 3.9 ± 0.3, 4.0 ± 0.2, and 4.0 ± 0.2 from 40 to 80 keV, respectively. The segmental image quality gradually increased from 40 to 70–80 keV until reaching its highest value. Among 295 PAD segments in 68 patients, 40 (13.6%) were scored at 1–2 at 40 keV and 13 (4.4%) were scored at 2 at 50 keV, indicating unsatisfactory image quality due to the indistinguishability between high-contrast areas and arterial calcifications. The segments exhibiting metal artifacts and venous contamination were reduced at 70–80 keV (2.6 ± 1.2, 2.7 ± 0.5) compared with at 40 keV (2.4 ± 1.1, 2.5 ± 0.7).CONCLUSIONThe LE-CTA method using a reconstruction algorithm for MEIs at 70–80 keV can enhance the image quality for PAD evaluation and improve mitigate venous contamination and metal artifacts. http://www.dirjournal.org/archives/archive-detail/article-preview/advanced-virtual-monoenergetic-imaging-algorithm-f/57266 artifactatherosclerosiscomputed tomography angiographyperipheral arterial diseaseradiation dosage |
| spellingShingle | Jung Han Hwang Jin Mo Kang Suyoung Park So Hyun Park Jeong Ho Kim Ki Hyun Lee Ji Hoon Shin Seong Yong Pak Advanced virtual monoenergetic imaging algorithm for lower extremity computed tomography angiography: effects on image quality, artifacts, and peripheral arterial disease evaluation Diagnostic and Interventional Radiology artifact atherosclerosis computed tomography angiography peripheral arterial disease radiation dosage |
| title | Advanced virtual monoenergetic imaging algorithm for lower extremity computed tomography angiography: effects on image quality, artifacts, and peripheral arterial disease evaluation |
| title_full | Advanced virtual monoenergetic imaging algorithm for lower extremity computed tomography angiography: effects on image quality, artifacts, and peripheral arterial disease evaluation |
| title_fullStr | Advanced virtual monoenergetic imaging algorithm for lower extremity computed tomography angiography: effects on image quality, artifacts, and peripheral arterial disease evaluation |
| title_full_unstemmed | Advanced virtual monoenergetic imaging algorithm for lower extremity computed tomography angiography: effects on image quality, artifacts, and peripheral arterial disease evaluation |
| title_short | Advanced virtual monoenergetic imaging algorithm for lower extremity computed tomography angiography: effects on image quality, artifacts, and peripheral arterial disease evaluation |
| title_sort | advanced virtual monoenergetic imaging algorithm for lower extremity computed tomography angiography effects on image quality artifacts and peripheral arterial disease evaluation |
| topic | artifact atherosclerosis computed tomography angiography peripheral arterial disease radiation dosage |
| url |
http://www.dirjournal.org/archives/archive-detail/article-preview/advanced-virtual-monoenergetic-imaging-algorithm-f/57266
|
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