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Usefulness of advanced monoenergetic reconstruction technique in dual-energy computed tomography for detecting bladder cancer
PURPOSE: Detecting bladder cancer (BC) in routine CT images is important but is sometimes difficult when cancer is small. We evaluated the ability of 40-keV advanced monoenergetic images to depict BC. MATERIALS AND METHODS: Fifty-two patients with a median age of 74 years (range 45–92) who were diag...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Singapore
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8803668/ https://www.ncbi.nlm.nih.gov/pubmed/34515925 http://dx.doi.org/10.1007/s11604-021-01195-5 |
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author | Nakagawa, Motoo Naiki, Taku Naiki-Ito, Aya Ozawa, Yoshiyuki Shimohira, Masashi Ohnishi, Masahiro Shibamoto, Yuta |
author_facet | Nakagawa, Motoo Naiki, Taku Naiki-Ito, Aya Ozawa, Yoshiyuki Shimohira, Masashi Ohnishi, Masahiro Shibamoto, Yuta |
author_sort | Nakagawa, Motoo |
collection | PubMed |
description | PURPOSE: Detecting bladder cancer (BC) in routine CT images is important but is sometimes difficult when cancer is small. We evaluated the ability of 40-keV advanced monoenergetic images to depict BC. MATERIALS AND METHODS: Fifty-two patients with a median age of 74 years (range 45–92) who were diagnosed as BC with transurethral resection or cystectomy, were included. They were examined with contrast-enhanced dual-energy CT (DE-CT) and advanced virtual monoenergetic images (40 keV) were reconstructed. For evaluating depictability of BC on 40-keV or virtual-120-kVp images, the difference in CT number between the cancer and bladder wall (BC–BW value) were calculated. We also subjectively assessed depictability of BC in virtual-120-kVp and 40-keV images using a 4-grade Likert scale (3: clear, 0: not visualized). RESULTS: In 42 of 52 patients, BC–BW values could be calculated because BC was detected on CT images. The mean BC–BW value at 40 keV was significantly higher than that of virtual 120 kVp [80.5 ± 54 (SD) vs. 11.4 ± 12.5 HU, P < 0.01]. Average scores of subjective evaluations in the virtual-120-kVp and 40-keV images were 1.7 ± 1.2 and 2.1 ± 1.2, respectively (P < 0.001). CONCLUSION: The advanced monoenergetic reconstruction technique reconstructed using DE-CT image is useful to depict BC. |
format | Online Article Text |
id | pubmed-8803668 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Springer Singapore |
record_format | MEDLINE/PubMed |
spelling | pubmed-88036682022-02-02 Usefulness of advanced monoenergetic reconstruction technique in dual-energy computed tomography for detecting bladder cancer Nakagawa, Motoo Naiki, Taku Naiki-Ito, Aya Ozawa, Yoshiyuki Shimohira, Masashi Ohnishi, Masahiro Shibamoto, Yuta Jpn J Radiol Original Article PURPOSE: Detecting bladder cancer (BC) in routine CT images is important but is sometimes difficult when cancer is small. We evaluated the ability of 40-keV advanced monoenergetic images to depict BC. MATERIALS AND METHODS: Fifty-two patients with a median age of 74 years (range 45–92) who were diagnosed as BC with transurethral resection or cystectomy, were included. They were examined with contrast-enhanced dual-energy CT (DE-CT) and advanced virtual monoenergetic images (40 keV) were reconstructed. For evaluating depictability of BC on 40-keV or virtual-120-kVp images, the difference in CT number between the cancer and bladder wall (BC–BW value) were calculated. We also subjectively assessed depictability of BC in virtual-120-kVp and 40-keV images using a 4-grade Likert scale (3: clear, 0: not visualized). RESULTS: In 42 of 52 patients, BC–BW values could be calculated because BC was detected on CT images. The mean BC–BW value at 40 keV was significantly higher than that of virtual 120 kVp [80.5 ± 54 (SD) vs. 11.4 ± 12.5 HU, P < 0.01]. Average scores of subjective evaluations in the virtual-120-kVp and 40-keV images were 1.7 ± 1.2 and 2.1 ± 1.2, respectively (P < 0.001). CONCLUSION: The advanced monoenergetic reconstruction technique reconstructed using DE-CT image is useful to depict BC. Springer Singapore 2021-09-13 2022 /pmc/articles/PMC8803668/ /pubmed/34515925 http://dx.doi.org/10.1007/s11604-021-01195-5 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Original Article Nakagawa, Motoo Naiki, Taku Naiki-Ito, Aya Ozawa, Yoshiyuki Shimohira, Masashi Ohnishi, Masahiro Shibamoto, Yuta Usefulness of advanced monoenergetic reconstruction technique in dual-energy computed tomography for detecting bladder cancer |
title | Usefulness of advanced monoenergetic reconstruction technique in dual-energy computed tomography for detecting bladder cancer |
title_full | Usefulness of advanced monoenergetic reconstruction technique in dual-energy computed tomography for detecting bladder cancer |
title_fullStr | Usefulness of advanced monoenergetic reconstruction technique in dual-energy computed tomography for detecting bladder cancer |
title_full_unstemmed | Usefulness of advanced monoenergetic reconstruction technique in dual-energy computed tomography for detecting bladder cancer |
title_short | Usefulness of advanced monoenergetic reconstruction technique in dual-energy computed tomography for detecting bladder cancer |
title_sort | usefulness of advanced monoenergetic reconstruction technique in dual-energy computed tomography for detecting bladder cancer |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8803668/ https://www.ncbi.nlm.nih.gov/pubmed/34515925 http://dx.doi.org/10.1007/s11604-021-01195-5 |
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