کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10690388 1019245 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pixel based focusing for photoacoustic and ultrasound dual-modality imaging
ترجمه فارسی عنوان
فوکوس بر پایه پیکسل برای تصویربرداری دوبعدی فتوآکوششی و سونوگرافی
کلمات کلیدی
تصویربرداری تصویربرداری، تصویربرداری اولتراسوند، تصویربرداری دوبعدی، تبدیل اسکن، تمرکز مبتنی بر پیکسل،
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم آکوستیک و فرا صوت
چکیده انگلیسی
It is desired that the same imaging functional modules such as beamformation, envelope detection, and digital scan conversion (DSC) are employed for the efficient development of a cross-sectional photoacoustic (PA) and ultrasound (US) dual-modality imaging system. The beamformation can be implemented using either delay-and-sum beamforming (DAS-BF) or adaptive beamforming methods, each with their own advantages and disadvantages for the dual-modality imaging. However, the DSC is always problematic because it causes blurring the fine details of an image, e.g., edges. This paper demonstrates that the pixel based focusing method is suitable for the dual-modality imaging; beamformation is directly conducted on each display pixel and thus DSC is not necessary. As a result, the artifacts by DSC are no longer a problem, so that the proposed method is capable of providing the maximum spatial resolution achievable by DAS-BF. The performance of the proposed method was evaluated through simulation and ex vivo experiments with a microcalcification-contained breast specimen, and the results were compared with those from DAS-BF and adaptive beamforming methods with DSC. The comparison demonstrated that the proposed method effectively overcomes the disadvantages of each beamforming method.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 54, Issue 8, December 2014, Pages 2126-2133
نویسندگان
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