کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8131285 | 1523235 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Assessment of Diastolic Function Using Ultrasound Elastography
ترجمه فارسی عنوان
بررسی عملکرد دیاستولیک با استفاده از الستوگرافی سونوگرافی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
آکوستیک و فرا صوت
چکیده انگلیسی
Shear wave elasticity imaging (SWEI) is a novel ultrasound elastography technique for assessing tissue stiffness. In this study, we investigate the potential of SWEI for providing diastolic functional assessment. In 11 isolated rabbit hearts, pressure-volume (PV) measurements were recorded simultaneously with SWEI recordings from the left ventricle free wall before and after induction of global ischemia. PV-based end diastolic stiffness increased by 100% after ischemia (pâ<0.05), and SWEI stiffness showed an increase of 103% (pâ<0.05). The relaxation time constant (Ï) before and after ischemia derived from pressure and SWEI curves showed increases of 79% and 76%, respectively (pâ<0.05). A linear regression between pressure-derived and SWEI-based (Ï) showed a slope of 1.164 with R2â=â0.80, indicating the near equivalence of the two assessments. SWEI can be used to derive (Ï) values and myocardial end diastolic stiffness. In global conditions, these measurements are consistent with PV measurements of diastolic function.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasound in Medicine & Biology - Volume 44, Issue 3, March 2018, Pages 551-561
Journal: Ultrasound in Medicine & Biology - Volume 44, Issue 3, March 2018, Pages 551-561
نویسندگان
Maryam Vejdani-Jahromi, Jenna Freedman, Young-Joong Kim, Gregg E. Trahey, Patrick D. Wolf,