کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1758781 1523212 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A novel dual-frequency imaging method for intravascular ultrasound applications
ترجمه فارسی عنوان
روش جدید تصویربرداری دوبعدی برای کاربردهای فراصوت داخل عروقی
کلمات کلیدی
بیماری قلب و عروقی، سونوگرافی داخل عضلانی، تصویربرداری با فرکانس دوگانه، پلت فرم تصویربرداری دو کاناله
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم آکوستیک و فرا صوت
چکیده انگلیسی


• A novel dual-frequency imaging method is first proposed for IVUS applications.
• Probe with different frequencies (36/78 MHz) is designed by PMN–PT single crystal.
• A dual-channel platform is designed combining the pulse generator and receiver.
• The method balances well for both imaging resolution and penetration depth.

Intravascular ultrasound (IVUS), which is able to delineate internal structures of vessel wall with fine spatial resolution, has greatly enriched the knowledge of coronary atherosclerosis. A novel dual-frequency imaging method is proposed in this paper for intravascular imaging applications. A probe combined two ultrasonic transducer elements with different center frequencies (36 MHz and 78 MHz) is designed and fabricated with PMN–PT single crystal material. It has the ability to balance both imaging depth and resolution, which are important imaging parameters for clinical test. A dual-channel imaging platform is also proposed for real-time imaging, and this platform has been proven to support programmable processing algorithms, flexible imaging control, and raw RF data acquisition for IVUS applications. Testing results show that the −6 dB axial and lateral imaging resolutions of low-frequency ultrasound are 78 and 132 μm, respectively. In terms of high-frequency ultrasound, axial and lateral resolutions are determined to be as high as 34 and 106 μm. In vitro intravascular imaging on healthy swine aorta is conducted to demonstrate the performance of the dual-frequency imaging method for IVUS applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 57, March 2015, Pages 31–35
نویسندگان
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