IMPROVING THE QUALITY OF ULTRASOUND ECHO SIGNALS USING CODED EXCITATIONS

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ASADI N.; SETAREHDAN S.K.; SOLTANIANZADEH H.

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Seminar Paper

Paper Information

Seminar: IRANIAN CONFERENCE ON BIOMEDICAL ENGINEERING
Year:2004 | Issue:11

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Title

IMPROVING THE QUALITY OF ULTRASOUND ECHO SIGNALS USING CODED EXCITATIONS

Author(s)

ASADI N. | SETAREHDAN S.K. | SOLTANIANZADEH H.

Keywords

SONOGRAPHY

ULTRASOUND IMAGING

CODED EXCITATION

MATCHED FILTER

CHIRP

NONLINEAR FM SIGNAL

Abstract

WHILE SIMPLE PULSE EXCITATION OF THE ULTRASOUND TRANSDUCER IS CONVENTIONALLY USED IN ULTRASOUND IMAGING, THE CODED EXCITATION SCHEME OF THE TRANSDUCER WAS PROPOSED RECENTLY TO IMPROVE THE IMAGE QUALITY AND PENETRATION DEPTH. IN THIS ARTICLE, A NOVEL COMBINED “PULSE EXCITATION - CODED EXCITATION” APPROACH IS PRESENTED. THE MOST DISTINCTIVE FEATURE OF THE PROPOSED APPROACH, IN COMPARISON TO THE PREVIOUSLY REPORTED CODED EXCITATION METHODS, IS THE FACT THAT THE EXCITATION CODES IN OUR APPROACH ARE ADAPTIVELY GENERATED FOR EACH SCAN LINE USING THE INFORMATION OBTAINED BY A SIMPLE PULSE EXCITATION PRIOR TO THE CODED EXCITATION OF THE TRANSDUCER. THEREFORE, THE INTERACTION BETWEEN THE TISSUE AND THE ULTRASOUND BEAM TRAVELLING THROUGH IT IS THE MAIN SOURCE OF INFORMATION, WHICH IS USED TO GENERATE THE CODES IN THE NEW SCHEME. A SYSTEMATIC METHOD FOR GENERATING THE ULTRASOUND SIGNALS DUE TO THE CODED EXCITATION OF THE TRANSDUCER IS EXPLAINED IN THIS PAPER. MOREOVER, THE IMPROVEMENTS IN THE SNR ARE QUANTITATIVELY COMPARED TO THE PREVIOUS METHODS.

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APA: Copy

ASADI, N., SETAREHDAN, S.K., & SOLTANIANZADEH, H.. (2004). IMPROVING THE QUALITY OF ULTRASOUND ECHO SIGNALS USING CODED EXCITATIONS. IRANIAN CONFERENCE ON BIOMEDICAL ENGINEERING. SID. https://sid.ir/paper/906372/en

Vancouver: Copy

ASADI N., SETAREHDAN S.K., SOLTANIANZADEH H.. IMPROVING THE QUALITY OF ULTRASOUND ECHO SIGNALS USING CODED EXCITATIONS. 2004. Available from: https://sid.ir/paper/906372/en

IEEE: Copy

N. ASADI, S.K. SETAREHDAN, and H. SOLTANIANZADEH, “IMPROVING THE QUALITY OF ULTRASOUND ECHO SIGNALS USING CODED EXCITATIONS,” presented at the IRANIAN CONFERENCE ON BIOMEDICAL ENGINEERING. 2004, [Online]. Available: https://sid.ir/paper/906372/en

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