发明名称 |
Plane wave scanning reception and receiver |
摘要 |
Plane waves are transmitted at different incident angles, and the radio frequency echo waveforms received by the elements in an array are processed with a Fourier transform. This method is capable of generating one frame of "raw" image for each transmitted plane wave. The formation of each raw image includes: temporal Fourier transform of radio frequency echo signal from each element; phase rotation; spatial Fourier transform; complex interpolation; and an inverse spatial-temporal Fourier transform. This method does not require the synthesis of limited diffraction beams and is computationally more efficient compared to conventional delay-and-sum approach. These raw images are combined coherently to enlarge spatial frequency coverage and enhance lateral resolution. The resolution-enhanced images are further combined incoherently to achieve speckle reduction.
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申请公布号 |
US6685641(B2) |
申请公布日期 |
2004.02.03 |
申请号 |
US20020061402 |
申请日期 |
2002.02.01 |
申请人 |
SIEMENS MEDICAL SOLUTIONS USA, INC. |
发明人 |
LIU D-L DONALD |
分类号 |
G01S7/52;G01S15/89;(IPC1-7):A61B8/00 |
主分类号 |
G01S7/52 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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