Colorimetry for wall appearance study of cerebral aneurysms
Background: Neurosurgeons can assess thin red walls in a cerebral aneurysm during a microsurgical procedure, but the judgment of the color is subjective and could have a bias. This study aimed to quantitatively evaluate the aneurysm wall characteristics. Methods: In 15 unruptured cerebral aneurysms,...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2022-06-01
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| Series: | Brain Hemorrhages |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589238X21000553 |
| _version_ | 1811333156577476608 |
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| author | Takenori Sato Fujimaro Ishida Satoru Tanioka Yoichi Miura Katsuhiro Tanaka Hidenori Suzuki |
| author_facet | Takenori Sato Fujimaro Ishida Satoru Tanioka Yoichi Miura Katsuhiro Tanaka Hidenori Suzuki |
| author_sort | Takenori Sato |
| collection | DOAJ |
| description | Background: Neurosurgeons can assess thin red walls in a cerebral aneurysm during a microsurgical procedure, but the judgment of the color is subjective and could have a bias. This study aimed to quantitatively evaluate the aneurysm wall characteristics. Methods: In 15 unruptured cerebral aneurysms, the surface color of cerebral aneurysms, parent arteries and branches were measured using Commission International del’Eclairage L*a*b*. The values of L* (perceptual lightness), a* (red-green color characteristics) and b* (blue-yellow color characteristics) were compared with color discrimination by two independent neurosurgeons, which was classified into “red”, “yellow”, “white” and “unjudged”. Results: Significantly lower L* and higher a* values were shown in red wall points consistently judged by both neurosurgeons compared with yellow or white wall points, while b* values had no significant differences. Based on these results, a novel index, aneurysm red indicator (ARI) was developed as a ratio of a* to L* values. The ARI had a high sensitivity and specificity to discriminate red walls (0.984 and 0.986, respectively). Conclusions: ARI could be useful for evaluating thin red walls of cerebral aneurysms. The novel approach using colorimetry may contribute to future hemodynamics analyses related to the aneurysm wall characteristics. |
| first_indexed | 2024-04-13T16:48:40Z |
| format | Article |
| id | doaj.art-aed2414b034c46a8b67b1bc1a7dcd44b |
| institution | Directory Open Access Journal |
| issn | 2589-238X |
| language | English |
| last_indexed | 2024-04-13T16:48:40Z |
| publishDate | 2022-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Brain Hemorrhages |
| spelling | doaj.art-aed2414b034c46a8b67b1bc1a7dcd44b2022-12-22T02:39:01ZengKeAi Communications Co., Ltd.Brain Hemorrhages2589-238X2022-06-01325761Colorimetry for wall appearance study of cerebral aneurysmsTakenori Sato0Fujimaro Ishida1Satoru Tanioka2Yoichi Miura3Katsuhiro Tanaka4Hidenori Suzuki5Department of Internal Medicine, Kinan Hospital, Minamimuro-gun, Mie, Japan; Department of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan; Corresponding author at: Department of Neurosurgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie 514-0001, Japan.Department of Neurosurgery, Mie Chuo Medical Center, National Hospital Organization, Tsu, Mie, JapanDepartment of Neurosurgery, Mie Chuo Medical Center, National Hospital Organization, Tsu, Mie, JapanDepartment of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Mie, JapanDepartment of Neurosurgery, Mie Chuo Medical Center, National Hospital Organization, Tsu, Mie, JapanDepartment of Neurosurgery, Mie University Graduate School of Medicine, Tsu, Mie, JapanBackground: Neurosurgeons can assess thin red walls in a cerebral aneurysm during a microsurgical procedure, but the judgment of the color is subjective and could have a bias. This study aimed to quantitatively evaluate the aneurysm wall characteristics. Methods: In 15 unruptured cerebral aneurysms, the surface color of cerebral aneurysms, parent arteries and branches were measured using Commission International del’Eclairage L*a*b*. The values of L* (perceptual lightness), a* (red-green color characteristics) and b* (blue-yellow color characteristics) were compared with color discrimination by two independent neurosurgeons, which was classified into “red”, “yellow”, “white” and “unjudged”. Results: Significantly lower L* and higher a* values were shown in red wall points consistently judged by both neurosurgeons compared with yellow or white wall points, while b* values had no significant differences. Based on these results, a novel index, aneurysm red indicator (ARI) was developed as a ratio of a* to L* values. The ARI had a high sensitivity and specificity to discriminate red walls (0.984 and 0.986, respectively). Conclusions: ARI could be useful for evaluating thin red walls of cerebral aneurysms. The novel approach using colorimetry may contribute to future hemodynamics analyses related to the aneurysm wall characteristics.http://www.sciencedirect.com/science/article/pii/S2589238X21000553Cerebral aneurysmAneurysm wall characteristicsColorimetryCIE L*a*b*Digital Color MeterAneurysm Red Indicator |
| spellingShingle | Takenori Sato Fujimaro Ishida Satoru Tanioka Yoichi Miura Katsuhiro Tanaka Hidenori Suzuki Colorimetry for wall appearance study of cerebral aneurysms Brain Hemorrhages Cerebral aneurysm Aneurysm wall characteristics Colorimetry CIE L*a*b* Digital Color Meter Aneurysm Red Indicator |
| title | Colorimetry for wall appearance study of cerebral aneurysms |
| title_full | Colorimetry for wall appearance study of cerebral aneurysms |
| title_fullStr | Colorimetry for wall appearance study of cerebral aneurysms |
| title_full_unstemmed | Colorimetry for wall appearance study of cerebral aneurysms |
| title_short | Colorimetry for wall appearance study of cerebral aneurysms |
| title_sort | colorimetry for wall appearance study of cerebral aneurysms |
| topic | Cerebral aneurysm Aneurysm wall characteristics Colorimetry CIE L*a*b* Digital Color Meter Aneurysm Red Indicator |
| url | http://www.sciencedirect.com/science/article/pii/S2589238X21000553 |
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