Simulation of ultrasound backscatter images from fish

An Hoai Pham; Bjarne Stage; Martin Christian Hemmsen; Bo Lundgren; Mads Møller Pedersen; Tina Bock Pedersen; Jørgen Arendt Jensen

doi:10.1117/12.878012

16 March 2011 Simulation of ultrasound backscatter images from fish

An Hoai Pham, Bjarne Stage, Martin Christian Hemmsen, Bo Lundgren, Mads Møller Pedersen, Tina Bock Pedersen, Jørgen Arendt Jensen

Author Affiliations +

Proceedings Volume 7961, Medical Imaging 2011: Physics of Medical Imaging; 796152 (2011) https://doi.org/10.1117/12.878012
Event: SPIE Medical Imaging, 2011, Lake Buena Vista (Orlando), Florida, United States

Abstract

The objective of this work is to investigate ultrasound (US) backscatter in the MHz range from fish to develop a realistic and reliable simulation model. The long term objective of the work is to develop the needed signal processing for fish species differentiation using US. In in-vitro experiments, a cod (Gadus morhua) was scanned with both a BK Medical ProFocus 2202 ultrasound scanner and a Toshiba Aquilion ONE computed tomography (CT) scanner. The US images of the fish were compared with US images created using the ultrasound simulation program Field II. The center frequency of the transducer is 10 MHz and the Full Width at Half Maximum (FWHM) at the focus point is 0.54 mm in the lateral direction. The transducer model in Field II was calibrated using a wire phantom to validate the simulated point spread function. The inputs to the simulation were the CT image data of the fish converted to simulated scatter maps. The positions of the point scatterers were assumed to be uniformly distributed. The scatter amplitudes were generated with a new method based on the segmented CT data in Hounsfield Units and backscatter data for the different types of tissues from the literature. The simulated US images reproduce most of the important characteristics of the measured US image.

Citation Download Citation

An Hoai Pham, Bjarne Stage, Martin Christian Hemmsen, Bo Lundgren, Mads Møller Pedersen, Tina Bock Pedersen, and Jørgen Arendt Jensen "Simulation of ultrasound backscatter images from fish", Proc. SPIE 7961, Medical Imaging 2011: Physics of Medical Imaging, 796152 (16 March 2011); https://doi.org/10.1117/12.878012

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