Quantitative Assessment of Left Atrial Wall Oscillation in Patients with Atrial Fibrillation Using Automated Two-Dimensional Tissue Tracking
| Project/Area Number |
21500449
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Medical systems
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| Research Institution | Kagoshima University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TEI Chuwa 鹿児島大学, 医歯(薬)学総合研究科, 教授 (10163891)
UCHIMURA Tomonori 鹿児島大学, 医学部・歯学部附属病院, 助教 (20363616)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 超音波医科学 / 心エコー法 / 心房細動 / 心機能 / 心エコー図 |
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| Research Abstract |
To quantify the left atrial(LA) wall oscillations in atrial fibrillation(AF), we examined the transthoracic and transesophageal 2-dimensional echocardiography in 48 patients with AF. LA wall longitudinal strain curves with a peak at end-systole were obtained by speckle tracking analysis. LA wall oscillations were recognized as periodic undulating strain curves and maximal LA wall oscillating strain was obtained visually. The mean value of the maximal LA wall oscillating strain was 2.8±1.3%(range 0.9-7.1%). LA appendage flow velocity was selected as an independent relating factor of maximal LA wall oscillating strain. In conclusion, automated 2-dimensional tissue tracking appears to be useful for the quantitative assessment of the LA wall oscillations.
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Report
(4 results)
Research Products
(6 results)
