| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Outline of Final Research Achievements |
Recently, two-dimensional speckle tracking echocardiography has been used to evaluate heart function. We applied this technique that is used for the evaluation of heart function to coronary arteries. The velocity vectors in the two-dimensional plane are displayed throughout the cardiac cycle, representing displacement of the speckles in relation to each other along the internal contour of coronary artery. Using this system, time-area curve can be automatically and promptly provided. We named this technique speckle tracking intravascular ultrasound (ST-IVUS). We determined the feasibility of evaluating strain and area of coronary plaque using ST-IVUS. There were strong correlation between luminal area by manual measurement and that by ST-IVUS measurement at both end-systole (r =0.98, p < 0.001) and end-diastole (r =0.98, p < 0.001). The strains of coronary arteries in the patients with diabetes mellitus.correlated with the level of HbA1c.
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