Shadow effects in simulated ultrasound images derived from computed tomography images using a focused beam tracing model
Simulation of ultrasound images based on computed tomography (CT) data has previously been performed with different approaches. Shadow effects are normally pronounced in ultrasound images, so they should be included in the simulation. In this study, a method to capture the shadow effects has been de...
Published in: | The Journal of the Acoustical Society of America |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2012
|
Subjects: | |
Online Access: | https://orbit.dtu.dk/en/publications/2f35058c-b450-4c25-b98c-7db353c251bd https://doi.org/10.1121/1.4726031 |
id |
ftdtupubl:oai:pure.atira.dk:publications/2f35058c-b450-4c25-b98c-7db353c251bd |
---|---|
record_format |
openpolar |
spelling |
ftdtupubl:oai:pure.atira.dk:publications/2f35058c-b450-4c25-b98c-7db353c251bd 2024-04-28T08:19:32+00:00 Shadow effects in simulated ultrasound images derived from computed tomography images using a focused beam tracing model Pham, An Hoai Lundgren, Bo Stage, Bjarne Pedersen, Mads Møller Hemmsen, Martin Christian Nielsen, Michael Bachmann Jensen, Jørgen Arendt 2012 https://orbit.dtu.dk/en/publications/2f35058c-b450-4c25-b98c-7db353c251bd https://doi.org/10.1121/1.4726031 eng eng https://orbit.dtu.dk/en/publications/2f35058c-b450-4c25-b98c-7db353c251bd info:eu-repo/semantics/closedAccess Pham , A H , Lundgren , B , Stage , B , Pedersen , M M , Hemmsen , M C , Nielsen , M B & Jensen , J A 2012 , ' Shadow effects in simulated ultrasound images derived from computed tomography images using a focused beam tracing model ' , Acoustical Society of America. Journal , vol. 132 , no. 1 , pp. 487-497 . https://doi.org/10.1121/1.4726031 article 2012 ftdtupubl https://doi.org/10.1121/1.4726031 2024-04-03T15:04:39Z Simulation of ultrasound images based on computed tomography (CT) data has previously been performed with different approaches. Shadow effects are normally pronounced in ultrasound images, so they should be included in the simulation. In this study, a method to capture the shadow effects has been developed, which makes the simulated ultrasound images appear more realistic. The method using a focused beam tracing model gives diffuse shadows that are similar to the ones observed in measurements on real objects. Ultrasound images of a cod (Gadus morhua) were obtained with a BK Medical 2202 ProFocus ultrasound scanner (BK Medical, Herlev, Denmark) equipped with a dedicated research interface giving access to beamformed radio frequency data. CT images were obtained with an Aquilion ONE Toshiba CT scanner (Toshiba Medical Systems Corp., Tochigi, Japan). CT data were mapped from Hounsfield units to backscatter strength, attenuation coefficients, and characteristic acoustic impedance. The focused beam tracing model was used to create maps of the transmission coefficient and scattering strength maps. FIELD II was then used to simulate an ultrasound image of 38.955.34.5 mm, using 106 point scatterers. As there is no quantitative method to assess quality of a simulated ultrasound image compared to a measured one, visual inspection was used for evaluation Article in Journal/Newspaper Gadus morhua Technical University of Denmark: DTU Orbit The Journal of the Acoustical Society of America 132 1 487 497 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
description |
Simulation of ultrasound images based on computed tomography (CT) data has previously been performed with different approaches. Shadow effects are normally pronounced in ultrasound images, so they should be included in the simulation. In this study, a method to capture the shadow effects has been developed, which makes the simulated ultrasound images appear more realistic. The method using a focused beam tracing model gives diffuse shadows that are similar to the ones observed in measurements on real objects. Ultrasound images of a cod (Gadus morhua) were obtained with a BK Medical 2202 ProFocus ultrasound scanner (BK Medical, Herlev, Denmark) equipped with a dedicated research interface giving access to beamformed radio frequency data. CT images were obtained with an Aquilion ONE Toshiba CT scanner (Toshiba Medical Systems Corp., Tochigi, Japan). CT data were mapped from Hounsfield units to backscatter strength, attenuation coefficients, and characteristic acoustic impedance. The focused beam tracing model was used to create maps of the transmission coefficient and scattering strength maps. FIELD II was then used to simulate an ultrasound image of 38.955.34.5 mm, using 106 point scatterers. As there is no quantitative method to assess quality of a simulated ultrasound image compared to a measured one, visual inspection was used for evaluation |
format |
Article in Journal/Newspaper |
author |
Pham, An Hoai Lundgren, Bo Stage, Bjarne Pedersen, Mads Møller Hemmsen, Martin Christian Nielsen, Michael Bachmann Jensen, Jørgen Arendt |
spellingShingle |
Pham, An Hoai Lundgren, Bo Stage, Bjarne Pedersen, Mads Møller Hemmsen, Martin Christian Nielsen, Michael Bachmann Jensen, Jørgen Arendt Shadow effects in simulated ultrasound images derived from computed tomography images using a focused beam tracing model |
author_facet |
Pham, An Hoai Lundgren, Bo Stage, Bjarne Pedersen, Mads Møller Hemmsen, Martin Christian Nielsen, Michael Bachmann Jensen, Jørgen Arendt |
author_sort |
Pham, An Hoai |
title |
Shadow effects in simulated ultrasound images derived from computed tomography images using a focused beam tracing model |
title_short |
Shadow effects in simulated ultrasound images derived from computed tomography images using a focused beam tracing model |
title_full |
Shadow effects in simulated ultrasound images derived from computed tomography images using a focused beam tracing model |
title_fullStr |
Shadow effects in simulated ultrasound images derived from computed tomography images using a focused beam tracing model |
title_full_unstemmed |
Shadow effects in simulated ultrasound images derived from computed tomography images using a focused beam tracing model |
title_sort |
shadow effects in simulated ultrasound images derived from computed tomography images using a focused beam tracing model |
publishDate |
2012 |
url |
https://orbit.dtu.dk/en/publications/2f35058c-b450-4c25-b98c-7db353c251bd https://doi.org/10.1121/1.4726031 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
Pham , A H , Lundgren , B , Stage , B , Pedersen , M M , Hemmsen , M C , Nielsen , M B & Jensen , J A 2012 , ' Shadow effects in simulated ultrasound images derived from computed tomography images using a focused beam tracing model ' , Acoustical Society of America. Journal , vol. 132 , no. 1 , pp. 487-497 . https://doi.org/10.1121/1.4726031 |
op_relation |
https://orbit.dtu.dk/en/publications/2f35058c-b450-4c25-b98c-7db353c251bd |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1121/1.4726031 |
container_title |
The Journal of the Acoustical Society of America |
container_volume |
132 |
container_issue |
1 |
container_start_page |
487 |
op_container_end_page |
497 |
_version_ |
1797582989798932480 |