Journal of Diagnostic Medical Sonography

 

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This version was published on March 1, 2008
Journal of Diagnostic Medical Sonography, Vol. 24, No. 2, 72-81 (2008)
DOI: 10.1177/8756479308315231

Enhancing Image Quality Using Advanced Signal Processing Techniques

Lisa Smith

Mohawk-McMaster Institute for Applied Health Sciences, Hamilton, Ontario, Canada, SMITHL9{at}MCMASTER.CA

Andrea Perron

Mohawk-McMaster Institute for Applied Health Sciences, Hamilton, Ontario, Canada

Angela Persico

Mohawk-McMaster Institute for Applied Health Sciences, Hamilton, Ontario, Canada

Elena Stravinskas

Mohawk-McMaster Institute for Applied Health Sciences, Hamilton, Ontario, Canada

Darrin Cournoyea, BSC, RDMS, RVT, CRGS, CRVS

Mohawk-McMaster Institute for Applied Health Sciences, Hamilton, Ontario, Canada

The main expectation of a sonographer is to obtain images of diagnostic quality. This requires the fundamental knowledge of spatial, contrast, and temporal resolution. To help determine which of these parameters needs to be optimized, one needs a well-defined clinical approach. Once satisfactory imaging is achieved, advanced signal processing tools can then be applied to further enhance image quality beyond that of good acoustic windows and tissue paths. Spatial compounding and tissue harmonic imaging are two commonly used tools that have significant clinical relevance in diagnostic sonography. These tools have their own unique applications and benefits, as well as limitations. When used correctly, they have shown to significantly improve image quality, allowing for the possibility of increased accuracy and an improvement in diagnostic confidence.

Key Words: spatial compounding • tissue harmonics • spatial resolution • contrast resolution


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