10-10-2013 дата публикации
Номер: US20130267850A1
Принадлежит:
The invention provides a system and method for limited view ultrasound imaging of a 2D section or a 3D volume of a body part. Ultrasound sensors configured are spatially or temporally arrayed in a limited view circular arc or over at least part of a concave surface such as a hemisphere. A processor calculates from detected ultrasound radiation a beam forming (BF) functional and calculates from the free amplitudes a point spread function (PSF). A filter g(k) is calculated from the Fourier transform H(k) of the PSF that is used to generate an image of the 2D section or the 3D volume of the body part. 1. A system for limited view ultrasound imaging of a 2D section or a 3D volume of a body part comprising: [{'sub': r', 't', 'r', 't', 'r', 't, '(i) a limited view circular arc having a central angle ξ, ξ satisfying 0<ξ<2π, the ultrasound sensors generating a plurality of amplitudes ƒ(φ, φ), where ƒ(φ, φ) is an amplitude of ultrasound radiation in a direction forming an angle φwith a fixed radius of the limited view circular arc when the body part is probed with incident radiation from a direction forming an angle φwith the fixed radius; wherein 0<φr,φt<ξ;'}, {'sub': r', 't', 'r', 't', 'r', 't', 'r', 't', 't', 't', 'r', 'r', 'r', 't', 'r', 't, '(ii) a concave surface, the ultrasound sensors generating a plurality of amplitudes ƒ(θ, θ, φ, φ), where ƒ(θ, θ, φ, φ) is an amplitude of ultrasound radiation when the body part is probed from a transmit direction determined by angles θ, φand a receive direction determined by angles θ, φwherein θ,φε[0,π] and φ, φε[0,π];'}], '(a) one or more ultrasound sensors, the ultrasound sensors being configured to be spatially or temporally arrayed in an array selected from [{'sub': r', 't', 'r', 't', 'r', 't, 'calculate from the ƒ(φ, φ) or the ƒ(θ, θ, φ, φ) a beam forming (BF) functional;'}, {'sub': free', 'r', 't', 'free', 'r', 't', 'r', 't, 'calculate free amplitudes ƒ(φ, φ) or ƒ(θ, θ, φ, φ);'}, {'sub': free', 'r', 't', 'free', 'r', 't', 'r ...
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