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Three-dimensional ultrasound (3D US) is widely useful in clinical diagnosis and therapy monitoring. However, the existing methods for 3D US are generally expensive and physically constraining. This paper describes a low-cost and unobtrusive method for 3D US, which spatially registers 2D US scans in six degrees of freedom (6 DoF). In this method, artificial skin features are created in the scan region...
In longitudinal studies and localized therapies, tissue changes are commonly tracked by repeated ultrasound scans at a fixed location marked on the patient body. However, the accuracy of this probe realignment approach is sometimes inadequate, especially when maintaining the insonification angle is essential. This paper describes a system that provides real-time visual guidance for accurate realignment...
Spatial registration of 2D ultrasound (US) scans and 3D volume reconstruction are very useful tools for clinical diagnosis. However, the existing methods for freehand US scan registration tend to be hindered by physical constraints of the equipment and patient motion artifacts. This paper describes a low-cost and unobtrusive method for spatially registering 2D US scans with six degrees of freedom...
A single-chip reconfigurable Color Doppler DSP engine is presented. It acts as the computation kernel of the high-frequency ultrasonic imaging system under development. The flexibility of the proposed DSP engine enables users to acquire sufficient information as needed, while the specificity of the hardware compared to general-purpose processors reduces cost and power consumption. This chip is implemented...
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