In vivo imaging of the skin in the 100 MHz region using the synthetic aperture concept
- 1 January 1995
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 2 (10510117) , 1287-1290
- https://doi.org/10.1109/ultsym.1995.495792
Abstract
A major design problem concerning medical high frequency broadband imaging systems is caused by the strong attenuation of the tissue, which limits the maximum depth of penetration and the achieveable signal-to-noise-ratio (SNR). To address this problem, strongly focused transducers with a high energy density in a narrow focal region are utilized. To achieve images of high quality and resolution over a large depth range despite the short depth of field of those devices, the Synthetic Aperture Focusing Technique (SAFT) is employed. For SAFT-processing, the focus area is considered as a virtual source of approximately spherical waves. This hypothesis is supported by a simulation of the point-spread-function of a focused transducer, which is based on the Rayleigh-Sommerfeld-integral in the time domain.Keywords
This publication has 7 references indexed in Scilit:
- High frequency ultrasound backscatter imagingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Adaptive 150 MHz ultrasound imaging of the skin and the eye using an optimal combination of short pulse mode and pulse compression modePublished by Institute of Electrical and Electronics Engineers (IEEE) ,1995
- In vivo ultrasound biomicroscopyPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1993
- Ultrasound backscatter microscope for skin imagingPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1993
- A Comparison of Broadband Holographic and Tomographic Imaging ConceptsPublished by Springer Nature ,1991
- A 50 MHz ultrasonic imaging system for dermatalogic applicationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1989
- Multifrequency Acoustical HolographyIEEE Transactions on Sonics and Ultrasonics, 1979