speckle in ultrasound b-mode scans:b超扫描中的散斑 下载积分: 1500 内容提示: IEEE TRANSACTIONS ON SONICS AND ULTRASONICS, VOL. SU-25, NO. 1, JANUARY 1978 1 Speckle in Ultrasound B-Mode Scans CHRISTOPH B. BURCKHARDT, MEMBER, IEEE Abstract-Ultrasound images obtained with a simple linear or ...
/4/, are extended in this paper in order to investigate speckle in ultrasound computerized reflection mode tomography (UCTR). UCTR can be explained as a numerical superposition of several B-Scans of a cross-sectional plane obtained from different aspect angles. The superposition consists of a ...
Experiments are carried out using a synthetically generated B-mode ultrasound image, a computer generated cyst image and real ultrasound images. The performance of the proposed technique is compared with Lee, homomorphic wavelet and squeeze box filter (SBF) in terms of noise variance reduction, mean...
Two novel signal-adaptive nonlinear filters are proposed for speckle reduction in ultrasound B-mode images. The first is a modification of the Signal-Adaptive Median, which uses the Fractal Dimension...doi:10.1007/978-3-642-93503-9_97Magnisalis, X....
The block diagram of the ultrasound B-scan data collection system that has been developed for obtaining ultrasound reflection data is shown in Fig. 1. The system employs a focused transducer, which is mechanically scanned over a linear path to collect image data (B-scans). The transducer and ...
We continue by confirming the expected functional dependence of the speckle contrast on the number of averaged scans. Finally, we provide demonstrations of SM-OCT for imaging the tissues of living subjects: a mouse retina and cornea, a mouse ear pinna and human fingertip skin. In all examples,...
All strain values were measured in the axial direction, where resolution is at least an order of magnitude greater than that in the lateral direction. Thus, the axial strain is more accurate due to the direction of the beam. Ultrasound data and video B-scans were obtained...
Lately, advanced imaging techniques have been developed to enable high-frame-rate (HFR) ultrasound imaging of the heart (Cikes et al. 2014) and, thus, move toward a better assessment of the cardiac function. Indeed, it was found that HFR imaging can provide additional information on timing of...
ULTRASOUNDTRANSVAGINAL COLOR DOPPLERThe linear Biot theory for wave propagation in porous media is applied to waves in an open cell permeable foam. The relevant physical parameters are specified. In general two wave modes exist, with their own frequency dependent wave speeds and damping factors. The...
B. (1978). Speckle in ultrasound B-mode scans. IEEE Transactions on Sonics and Ultrasonics, 25(1), 1–6. Article Google Scholar Chang, S. G., Yu, B., & Vetterli, M. (2000). Adaptive wavelet thresholding for image denoising and compression. EEE Transactions on Image Processing, 9(9...