Dr. Sidney Leeman Profile

Dr. Sidney Leeman

at King's College London

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Author

Publications (13)

Proceedings Article | 23 May 2003 Paper

Phase diversity for speckle reduction

Ricardo Dantas, Sidney Leeman, Eduardo Costa, Joie Jones, Eduardo Valadares Oliveira

Proceedings Volume 5035, (2003) https://doi.org/10.1117/12.479904

KEYWORDS: Speckle, Spiral phase plates, Ultrasonography, Image filtering, Image resolution, Signal to noise ratio, Image processing, Bandpass filters, Filtering (signal processing), Optical inspection

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Proceedings Article | 23 May 2003 Paper

Diffraction tomography with multiple scattering

Sidney Leeman, Joie Jones

Proceedings Volume 5035, (2003) https://doi.org/10.1117/12.479935

KEYWORDS: Scattering, Tomography, Multiple scattering, Diffraction, Scatter measurement, Computed tomography, Ultrasonography, Acoustics, Tissues, Medical imaging

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Proceedings Article | 30 May 2001 Paper

Measurement of transducer directivity function

Sidney Leeman, Andrew Healey, Eduardo Costa, Hayram Nicacio, Ricardo Dantas, Joaquim Maia

Proceedings Volume 4325, (2001) https://doi.org/10.1117/12.428234

KEYWORDS: Transducers, Fourier transforms, Ultrasonography, Distance measurement, Spherical lenses, 3D metrology, Time metrology, Head, Medicine, Calibration

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Proceedings Article | 30 May 2001 Paper

Pulse-echo attenuation imaging

Sidney Leeman, Andrew Healey, Eduardo Costa, Hayram Nicacio, Sayed Shah

Proceedings Volume 4325, (2001) https://doi.org/10.1117/12.428212

KEYWORDS: Signal attenuation, Tissues, Ultrasonography, Image segmentation, Image resolution, Image processing, Signal processing, Modulation, Image analysis, Rutherfordium

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Proceedings Article | 25 April 2000 Paper

New ultrasound pulse-echo method for measuring the thickness of thin membranes

Sidney Leeman, Andrew Healey, Eduardo Costa

Proceedings Volume 3977, (2000) https://doi.org/10.1117/12.384543

KEYWORDS: Ultrasonography, Reflectivity, Transducers, Gaussian pulse, Physics, Medical imaging, Scanners, Data modeling, Data acquisition, Signal processing

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Proceedings Article | 12 April 2000 Paper

Pulsed ultrasound field simulation and visualization

Sidney Leeman, Andrew Healey, Ricardo Dantas, Eduardo Costa

Proceedings Volume 3982, (2000) https://doi.org/10.1117/12.382218

KEYWORDS: Transducers, Ultrasonography, Visualization, Wave propagation, Computer simulations, Silicon, Medical imaging, Computed tomography, Information operations, Solids

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Proceedings Article | 28 May 1999 Paper

Medical ultrasound pulse structure

Sidney Leeman, Andrew Healey

Proceedings Volume 3659, (1999) https://doi.org/10.1117/12.349484

KEYWORDS: Transducers, Ultrasonography, Diffraction, Wave propagation, Fourier transforms, Imaging devices, Medical imaging, Digital signal processing, Tissues, Acoustics

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Proceedings Article | 24 July 1998 Paper

Propagation and imaging of wideband three-dimensional ultrasound fields

Sidney Leeman, Andrew Healey

Proceedings Volume 3336, (1998) https://doi.org/10.1117/12.317010

KEYWORDS: Ultrasonography, Transducers, Wave propagation, Visualization, 3D image processing, Physics, Medical imaging, Fourier transforms, Signal attenuation, Computed tomography

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Proceedings Article | 1 May 1998 Paper

New approach toward field and transducer characterization

Andrew Healey, Sidney Leeman

Proceedings Volume 3341, (1998) https://doi.org/10.1117/12.308016

KEYWORDS: Transducers, Ultrasonography, Acoustics, Apodization, Wave propagation, Modulation, Spatial frequencies, Computer simulations, Data acquisition, Measurement devices

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Proceedings Article | 11 April 1996 Paper

Analysis of ultrasound pulse-wave Doppler systems

Sidney Leeman, Nicholas Thomas, Andrew Healey

Proceedings Volume 2708, (1996) https://doi.org/10.1117/12.237793

KEYWORDS: Doppler effect, Ultrasonography, Wavelets, Signal attenuation, Transducers, Signal processing, Tissues, Reflectors, Blood, Fourier transforms

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Proceedings Article | 8 April 1996 Paper

Analysis of ultrasound pulse-echo images for characterization of muscle disease

Sidney Leeman, John Heckmatt

Proceedings Volume 2709, (1996) https://doi.org/10.1117/12.237892

KEYWORDS: Ultrasonography, Signal attenuation, Scanners, Diagnostics, Tissues, Bone, Data acquisition, Visualization, Scattering, Gait analysis

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Proceedings Article | 12 May 1995 Paper

Speckle correction in ultrasound b-mode images: a zero-based approach

Andrew Healey, Sidney Leeman

Proceedings Volume 2434, (1995) https://doi.org/10.1117/12.208742

KEYWORDS: Speckle, Image processing, Ultrasonography, Image resolution, Interference (communication), Image segmentation, Destructive interference, Imaging systems, Digital filtering, Image filtering

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Proceedings Article | 8 May 1995 Paper

Attenuation-weighted pulse-echo imaging with ultrasound

Sidney Leeman, Andrew Healey, Mark Betts, Leonard Ferrari

Proceedings Volume 2432, (1995) https://doi.org/10.1117/12.208338

KEYWORDS: Signal attenuation, Tissues, Ultrasonography, Image segmentation, In vivo imaging, Data modeling, Signal processing, Medical imaging, Signal detection, Scattering

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Showing 5 of 13 publications

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