Journal ArticleDOI
Improved ultrasound image quality with pixel-based beamforming using a Wiener-filter and a SNR-dependent coherence factor.
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TLDR
In this article, the received waveforms are passed through a Wiener filter before being used in the coherent pixel-based beamformer, which is designed based on signals echoed from a single scatterer at the transmit focus.About:
This article is published in Ultrasonics.The article was published on 2022-02-01. It has received 8 citations till now. The article focuses on the topics: Beamforming & Wiener filter.read more
Citations
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Journal ArticleDOI
Development of a focal lesion phantom with clinically relevant lesion characteristics for image quality evaluation of breast ultrasound scanners.
TL;DR: In this paper , a range of contrast and anechoic-detail phantoms with clinically relevant lesions, of various contrast and sizes, for performance testing of breast ultrasound equipment were developed.
Journal ArticleDOI
A novel method based on Wiener filter for denoising Poisson noise from medical X-Ray images
TL;DR: In this paper , a novel method that removes Poisson noise from medical X-ray images is proposed by overcoming the above mentioned disadvantages such as excessive smoothing of the image, distorting the texture information, reducing the image quality and high computational cost.
Journal ArticleDOI
Improving axial resolution of medical ultrasound images by using noise-robust broadband filter based on singular value decomposition
TL;DR: In this article , the authors proposed a design method for a noise-robust broadband filter based on the singular value decomposition of the received RF signal, which was validated by applying the filter to noise-contaminated signals.
Proceedings ArticleDOI
A Study of Bandwidth Extension in Delay Multiply and Sum Beamforming applied to Ultrasound Imaging
TL;DR: In this paper , a bandwidth extension algorithm, Bandwidth Extension Filtered Unified Pixel-based Delay and Sum (BE-FUDMAS), was proposed to overcome the over-sampling of RF data to avoid aliasing.
Journal ArticleDOI
Ovarian cancer detection in computed tomography images using ensembled deep optimized learning classifier
Arathi Boyanapalli,A. Shanthini +1 more
TL;DR: In this article , the proposed ensemble deep optimized classifier-improved aquila optimization (EDOC-IAO) classifier is introduced to detect different types of ovarian cancer in computed tomography images.
References
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Journal ArticleDOI
Calculation of pressure fields from arbitrarily shaped, apodized, and excited ultrasound transducers
TL;DR: A method for simulation of pulsed pressure fields from arbitrarily shaped, apodized and excited ultrasound transducers is suggested, which relies on the Tupholme-Stepanishen method for calculating pulsing pressure fields and can also handle the continuous wave and pulse-echo case.
Journal ArticleDOI
Synthetic aperture imaging for small scale systems
TL;DR: Multi-element synthetic aperture imaging methods suitable for applications with severe cost and size limitations are explored in this article, where each method uses different spatial frequencies and acquisition strategies for imaging, and therefore different sets of active transmit/receive element combinations.
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Adaptive imaging using the generalized coherence factor
Pai-Chi Li,Meng-Lin Li +1 more
TL;DR: A new adaptive imaging technique that uses the generalized coherence factor (GCF) to reduce the focusing errors resulting from the sound-velocity inhomogeneities rivals that of the correlation-based technique and the parallel adaptive receive compensation algorithm.
Proceedings ArticleDOI
Evolution of ultrasound beamformers
TL;DR: In this paper, a review of the changes that have occurred and the current trends in beamformer design is presented, along with some of the factors causing these shifts along the the common types of designs and implementations.
Journal ArticleDOI
Synthetic aperture techniques with a virtual source element
TL;DR: The use of the focus as a virtual element is examined, and the virtual source has been shown to exhibit the same behavior as an actual transducer element in response to synthetic aperture processing techniques.