Comparison of Wave-Equation Versus Measurement-Processing Transducer Calibration for Ultrasonic Transmission Tomography

Author

Zacal, Jiri ; Hemzal, Dusan ; Jan, Jiri ; Filipik, Adam ; Jirik, Radovan ; Kolar, Radim

Author_Institution

Dept. of Biomed. Eng., Brno Univ. of Technol.

fYear

2006

fDate

Aug. 30 2006-Sept. 3 2006

Firstpage

2754

Lastpage

2757

Abstract

The contribution deals with the first step in using proper wave-equation based ultrasound propagation model in image reconstruction from the ultrasonic computed tomography data. Particularly, it compares the transducer calibration results obtained via direct measurement of the empty image field and consequential data processing based on a simple direct-propagation model with the simulation results obtained via solving the single-frequency wave equation under proper border conditions reflecting the realistic measurement geometry. The results show a reasonable qualitative agreement when a certain degree of phase-shifted coupling from the transmitting transducer elements to the neighbouring elements of the transducer field is admitted

Keywords

biomedical ultrasonics; calibration; computerised tomography; image reconstruction; medical image processing; ultrasonic propagation; ultrasonic transducers; wave equations; data processing; direct-propagation model; image field; image reconstruction; measurement-processing transducer calibration; phase-shifted coupling; realistic measurement geometry; single-frequency wave-equation; transducer element; ultrasonic computed tomography; ultrasonic transmission tomography; ultrasound propagation model; Calibration; Computational modeling; Computed tomography; Data processing; Image reconstruction; Particle measurements; Solid modeling; Ultrasonic imaging; Ultrasonic transducers; Ultrasonic variables measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE

Conference_Location

New York, NY

ISSN

1557-170X

Print_ISBN

1-4244-0032-5

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/IEMBS.2006.259401

Filename

4462366