کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10692039 | 1019616 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Acoustically Active Injection Catheter Guided by Ultrasound: Navigation Tests in Acutely Ischemic Porcine Hearts
ترجمه فارسی عنوان
کاتتر تزریقی فعال با هدایت سونوگرافی: تست های ناوبری در موارد قلب عصبی حاد اسکیزوفرنی
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کلمات کلیدی
کاتتر آکوستیک، ناوبری اولتراسوند، داپلر امواج ضربه ای،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
آکوستیک و فرا صوت
چکیده انگلیسی
Catheters are increasingly used therapeutically and investigatively. With complex usage comes a need for more accurate intracardiac localization than traditional guidance can provide. An injection catheter navigated by ultrasound was designed and then tested in an open-chest model of acute ischemia in eight pigs. The catheter is made “acoustically active” by a piezo-electric crystal near its tip, electronically controlled, vibrating in the audio frequency range and uniquely identifiable using pulsed-wave Doppler. Another “target” crystal was sutured to the epicardium within the ischemic region. Sonomicrometry was used to measure distances between the two crystals and then compared with measurements from 2-D echocardiographic images. Complete data were obtained from seven pigs, and the correlation between sonomicrometry and ultrasound measurements was excellent (p < 0.0001, ÏÂ = 0.9820), as was the intraclass correlation coefficient (0.96) between two observers. These initial experimental results suggest high accuracy of ultrasound navigation of the acoustically active catheter prototype located inside the beating left ventricle.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasound in Medicine & Biology - Volume 40, Issue 7, July 2014, Pages 1650-1659
Journal: Ultrasound in Medicine & Biology - Volume 40, Issue 7, July 2014, Pages 1650-1659
نویسندگان
Marek Belohlavek, Minako Katayama, David Zarbatany, F. David Fortuin, Mostafa Fatemi, Ivan Z. Nenadic, Eileen M. McMahon,