| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
In current TNM classification (8th edition) of oral cavity cancer, depth of invasion (DOI) has been incorporated into T staging. DOI is defined as the depth of tumor by dropping a “plumb line” to the deepest portion of the tumor from the level of the basement membrane of the normal mucosa closest to the tumor. Based on those retrospective single-institutional and multi-institutional studies including a comparative study using CT and MRI, it was suggested that intraoral ultrasonography with acoustic coupling polymer gel could be a promising method for the measurement of DOI in T1/T2 tongue squamous cell carcinoma with a sufficient accuracy.
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