کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1758730 1523210 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A decimated minimum variance beamformer applied to ultrasound imaging
ترجمه فارسی عنوان
یک قطب نمای پرتوی فرمول حداقل واریانس مورد استفاده در تصویربرداری اولتراسوند
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم آکوستیک و فرا صوت
چکیده انگلیسی


• The paper describes a new adaptive beamforming method with linear complexity.
• A decimated aperture data is used to apply the minimum variance beamforming.
• In complexity aspect, it is similar to the DAS, while outperforming in resolution.
• Compared to MV, it behaves more robust at the presence of errors.

Minimum variance beamforming has performed significant improvement in the resolution of the ultrasound images. However, its computational complexity is a serious problem. This paper introduces a new implementation of the minimum variance beamformer for ultrasound imaging with a focused transmit beam. In this method, a decimated aperture data instead of full of it, is used as the beamformer input, on which the minimum variance beamforming is applied, with the covariance matrix estimated using the full aperture data. In this way, the method can give a linear complexity while it can show a performance comparable to that of the full array implementation of the minimum variance beamforming, as the simulation and experimental results confirm this. Therefore, this adaptive beamforming method can be viewed as an approximate implementation of the minimum variance beamforming with a linear computational complexity.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 59, May 2015, Pages 119–127
نویسندگان
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