دانلود رایگان مقاله لاتین تصویربرداری موج پالس با سونوگرافی از سایت الزویر
عنوان فارسی مقاله:
ارزیابی عملکرد تصویربرداری موج پالس با استفاده از سونوگرافی معمولی در آئورت سگ در شرایط ازمایشگاهی و عروق طبیعی انسان در داخل بدن
عنوان انگلیسی مقاله:
Performance assessment of pulse wave imaging using conventional ultrasound in canine aortas ex vivo and normal human arteries in vivo
سال انتشار : 2015
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بخشی از مقاله انگلیسی :
PWI was performed on the left common carotid arteries and infrarenal abdominal aortas of ten normal human subjects (8 M, 2 F, mean age 24.8 3.3 y.o.) in the supine position using a 10 MHz linear array transducer (SonixTouch, Ultrasonix Medical, Burnaby, BC, Canada) for the carotid and a 3.3 MHz curvilinear array transducer for the aorta. To minimize rigid motion, each subject was requested to perform breath-holding for the entire duration of the 2.5-s RF acquisition. 5e8 acquisitions were performed on each artery in all subjects in order to average the PWV and r2 measurements over multiple cardiac cycles. PWI in normal subjects typically measures PWVs of 3e6 m/s in the carotid artery16 and 4e8 m/s in the abdominal aorta.13,15 Several other studies using imageguided methods to measure local PWV in normal subjects have reported values within the same range,32e36 while the global PWV measured using carotid-femoral applanation tonometry in young healthy adults typically ranges from 5 to 7 m/s.37e42 For the in vivo portion of this study, the carotid arteries were imaged at depths of 25e30 mm using the same transducer as that in the ex vivo experiments. From Table 1, it was determined that 32 scan lines would be used to achieve a PWV upper limit that is almost four times higher than the typical values found in literature. The aortas were imaged at depths of 70e90 mm and segment lengths of 80e100 mm. Based on these conditions and Eqn. (A6) (Appendix), it was determined that 24 scan lines would be used to achieve frame rates of 309e347 fps and PWV upper limits of 23.19e33.31 m/s, also four times higher than typical values.
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کلمات کلیدی:
Mapping the longitudinal wall stiffness heterogeneities within intact ... www.jbiomech.com/article/S0021-9290(13)00213-3/abstract by D Shahmirzadi - 2013 - Cited by 25 - Related articles Jun 13, 2013 - ... within intact canine aortas using Pulse Wave Imaging (PWI) ex vivo .... Pulse Wave Imaging (PWI) is a relatively new, ultrasound-based imaging ... relationship and were compared against conventional mechanical testing. Performance Assessment and Optimization of Pulse Wave Imaging ... https://web.stevens.edu/ses/documents/fileadmin/.../pdf/Li_IEEE%20EMBS_2012.pdf by RX Li - Cited by 4 - Related articles the carotid and femoral pressure waveforms using the ECG, then measuring the ... Pulse Wave Imaging (PWI) is an ultrasound-based method developed by our ... Wave Imaging. (PWI) in ex vivo canine aortas and in vivo normal human arteries ... In conventional ultrasound scanners, the beam sweeping induces delays in ... . A Marfan syndrome patient data set. Left: the 3-D FLASH MR data ... https://www.researchgate.net/.../259516713_fig2_Fig-2-A-Marfan-syndrome-patient-dat... The pulse wave velocity (PWV) is a good indicator of the aortic stiffness in ..... of Pulse Wave Imaging using conventional ultrasound in canine aortas ex vivo and ... . The segmentation and aortic centerline extraction of the HASTE ... https://www.researchgate.net/.../259516713_fig9_Fig-10-The-segmentation-and-aortic-c... In our case the pulse wave consist of 40 samples for each aortic position (40 .... of Pulse Wave Imaging using conventional ultrasound in canine aortas ex vivo ... Danial Shahmirzadi | LinkedIn https://www.linkedin.com/in/danial-shahmirzadi-14379124 Orange County, California Area - Sr. R&D Engineer at Sonendo®, Inc. - Sonendo®, Inc. The feasibility of using the ultrasound-based method of Pulse Wave Imaging (PWI) .... 7.16 and 9.07 kW/cm(2) and durations of 10 and 30 s ex vivo, resulting in six ... relationship and were compared against conventional mechanical testing. .... the pulse wave propagation along the abdominal wall of canine aorta in vitro in ... Pulse wave propagation and velocity in aneurysmal aorta using FSI ... https://rk.msu.ac.th/v2n1/09.pdf by T Khamdaeng - Related articles et al., 2010; Khamdaeng et al., 2012), based ultrasound. The conventional in vivo noninvasive method is the global measurement of the pulse wave velocity ...
