Combination Image Analysis of Tongue Color and Sublingual Vein Improves the Diagnostic Accuracy of Oketsu (Blood Stasis) in Kampo Medicine
AimIn tongue diagnosis, a dark purple tongue and enlarged sublingual vein are important findings of Oketsu (blood stasis). However, the association between the tongue color and the sublingual vein has not been reported. This study investigated the association between the tongue color values and the...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-03-01
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| Series: | Frontiers in Medicine |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmed.2021.790542/full |
| _version_ | 1818489697780891648 |
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| author | Akira Morita Aya Murakami Keigo Noguchi Yuki Watanabe Toshiya Nakaguchi Sadayuki Ochi Kazuho Okudaira Yoshiro Hirasaki Takao Namiki |
| author_facet | Akira Morita Aya Murakami Keigo Noguchi Yuki Watanabe Toshiya Nakaguchi Sadayuki Ochi Kazuho Okudaira Yoshiro Hirasaki Takao Namiki |
| author_sort | Akira Morita |
| collection | DOAJ |
| description | AimIn tongue diagnosis, a dark purple tongue and enlarged sublingual vein are important findings of Oketsu (blood stasis). However, the association between the tongue color and the sublingual vein has not been reported. This study investigated the association between the tongue color values and the sublingual vein width using tongue image analyzing system (TIAS) for the objective assessment of blood stasis.MethodsA total of 38 patients (age 68.7 ± 11.3 years, 14 men and 24 women) who visited the Department of Kampo Medicine at Chiba University Hospital were included. Physical findings, blood test results, blood stasis score from medical records, and tongue images obtained with TIAS were analyzed. The patients were classified into two groups: patients with a sublingual vein width of ≤2.5 mm (20 patients) and those with a width of >2.5 mm (18 patients). The physical findings and the blood test results of the two groups were analyzed by Wilcoxon's rank-sum test or χ2-test, whereas logistic regression analysis was used to determine the association between the tongue color values and sublingual vein width. Receiver operating characteristic (ROC) analysis was used to differentiate blood stasis.ResultsThe color values significantly related to the sublingual vein width (mm) were the P1-L* and P4-L* (darkness of the tongue edge and tongue apex) and the P1-b* and P2-b* (blueness of the tongue edge and tongue posterior). The area under the curve was greater for the combination of the tongue color values and the sublingual vein width than that for either of them.ConclusionThis study demonstrated an objective evaluation of blood stasis in the tongue of patients with dark-blue discoloration and an enlarged sublingual vein. In addition, the combination of the tongue color and the sublingual vein is expected to facilitate a more reliable diagnosis of blood stasis. |
| first_indexed | 2024-12-10T17:07:06Z |
| format | Article |
| id | doaj.art-122ca12d26a74433b31dc77a298af001 |
| institution | Directory Open Access Journal |
| issn | 2296-858X |
| language | English |
| last_indexed | 2024-12-10T17:07:06Z |
| publishDate | 2022-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Medicine |
| spelling | doaj.art-122ca12d26a74433b31dc77a298af0012022-12-22T01:40:25ZengFrontiers Media S.A.Frontiers in Medicine2296-858X2022-03-01810.3389/fmed.2021.790542790542Combination Image Analysis of Tongue Color and Sublingual Vein Improves the Diagnostic Accuracy of Oketsu (Blood Stasis) in Kampo MedicineAkira Morita0Aya Murakami1Keigo Noguchi2Yuki Watanabe3Toshiya Nakaguchi4Sadayuki Ochi5Kazuho Okudaira6Yoshiro Hirasaki7Takao Namiki8Department of Japanese-Oriental (Kampo) Medicine, Graduate School of Medicine, Chiba University, Chiba, JapanFaculty of Pharmacy, Center for Pharmaceutical Education, Yokohama University of Pharmacy, Yokohama, JapanDepartment of Medical Engineering, Graduate School of Science and Engineering, Chiba University, Chiba, JapanDepartment of Japanese-Oriental (Kampo) Medicine, Graduate School of Medicine, Chiba University, Chiba, JapanDepartment of Research and Development, Center for Frontier Medical Engineering, Chiba University, Chiba, JapanFaculty of Pharmacy, Center for Pharmaceutical Education, Yokohama University of Pharmacy, Yokohama, JapanFaculty of Pharmacy, Center for Pharmaceutical Education, Yokohama University of Pharmacy, Yokohama, JapanDepartment of Japanese-Oriental (Kampo) Medicine, Graduate School of Medicine, Chiba University, Chiba, JapanDepartment of Japanese-Oriental (Kampo) Medicine, Graduate School of Medicine, Chiba University, Chiba, JapanAimIn tongue diagnosis, a dark purple tongue and enlarged sublingual vein are important findings of Oketsu (blood stasis). However, the association between the tongue color and the sublingual vein has not been reported. This study investigated the association between the tongue color values and the sublingual vein width using tongue image analyzing system (TIAS) for the objective assessment of blood stasis.MethodsA total of 38 patients (age 68.7 ± 11.3 years, 14 men and 24 women) who visited the Department of Kampo Medicine at Chiba University Hospital were included. Physical findings, blood test results, blood stasis score from medical records, and tongue images obtained with TIAS were analyzed. The patients were classified into two groups: patients with a sublingual vein width of ≤2.5 mm (20 patients) and those with a width of >2.5 mm (18 patients). The physical findings and the blood test results of the two groups were analyzed by Wilcoxon's rank-sum test or χ2-test, whereas logistic regression analysis was used to determine the association between the tongue color values and sublingual vein width. Receiver operating characteristic (ROC) analysis was used to differentiate blood stasis.ResultsThe color values significantly related to the sublingual vein width (mm) were the P1-L* and P4-L* (darkness of the tongue edge and tongue apex) and the P1-b* and P2-b* (blueness of the tongue edge and tongue posterior). The area under the curve was greater for the combination of the tongue color values and the sublingual vein width than that for either of them.ConclusionThis study demonstrated an objective evaluation of blood stasis in the tongue of patients with dark-blue discoloration and an enlarged sublingual vein. In addition, the combination of the tongue color and the sublingual vein is expected to facilitate a more reliable diagnosis of blood stasis.https://www.frontiersin.org/articles/10.3389/fmed.2021.790542/fullKampo medicinetongue diagnosissublingual veintongue colortongue image analyzing systemOketsu (blood stasis) |
| spellingShingle | Akira Morita Aya Murakami Keigo Noguchi Yuki Watanabe Toshiya Nakaguchi Sadayuki Ochi Kazuho Okudaira Yoshiro Hirasaki Takao Namiki Combination Image Analysis of Tongue Color and Sublingual Vein Improves the Diagnostic Accuracy of Oketsu (Blood Stasis) in Kampo Medicine Frontiers in Medicine Kampo medicine tongue diagnosis sublingual vein tongue color tongue image analyzing system Oketsu (blood stasis) |
| title | Combination Image Analysis of Tongue Color and Sublingual Vein Improves the Diagnostic Accuracy of Oketsu (Blood Stasis) in Kampo Medicine |
| title_full | Combination Image Analysis of Tongue Color and Sublingual Vein Improves the Diagnostic Accuracy of Oketsu (Blood Stasis) in Kampo Medicine |
| title_fullStr | Combination Image Analysis of Tongue Color and Sublingual Vein Improves the Diagnostic Accuracy of Oketsu (Blood Stasis) in Kampo Medicine |
| title_full_unstemmed | Combination Image Analysis of Tongue Color and Sublingual Vein Improves the Diagnostic Accuracy of Oketsu (Blood Stasis) in Kampo Medicine |
| title_short | Combination Image Analysis of Tongue Color and Sublingual Vein Improves the Diagnostic Accuracy of Oketsu (Blood Stasis) in Kampo Medicine |
| title_sort | combination image analysis of tongue color and sublingual vein improves the diagnostic accuracy of oketsu blood stasis in kampo medicine |
| topic | Kampo medicine tongue diagnosis sublingual vein tongue color tongue image analyzing system Oketsu (blood stasis) |
| url | https://www.frontiersin.org/articles/10.3389/fmed.2021.790542/full |
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