Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Patent
1997-06-25
1999-08-10
Lateef, Marvin M.
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
600458, 600447, A61B 800
Patent
active
059350687
ABSTRACT:
A wavefront compensation technique which approaches the performance of Inverse Filtering while demonstrating adequate stability and signal to noise ratio. The spectrum amplitude is compressed in combination with phase deaberration algorithms by compressing the amplitude distortion using an amplitude compression function, such as an Mth root function, which converges the amplitudes towards the ideal inverse filtering solution in conjunction with conventional phase deaberration algorithms. Wavefront compensation using the compressed amplitude distortion data in accordance with the invention provides substantial contrast improvement over conventional phase only deaberration algorithms. In experiments, the mainlobe diffraction shape has been restored down to a -30 dB level necessary for resolving small breast lesions.
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Steinberg Bernard D.
Zhu Qing
Lateef Marvin M.
Patel Maulin
The Trustees of the University of Pennsylvania
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