High Resolution Ultrasound Imaging Using Adaptive Beamforming with Reduced Number of Active Elements

Iben Kraglund Holfort; Fredrik Gran; Jørgen Arendt Jensen

doi:10.1016/j.phpro.2010.01.083

High Resolution Ultrasound Imaging Using Adaptive Beamforming with Reduced Number of Active Elements

Iben Kraglund Holfort, Fredrik Gran, Jørgen Arendt Jensen

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

In this paper, the adaptive, minimum variance ( MV) beamformer is applied to ultrasound data. Due to near-field properties, the energy of the ultrasound data reduces towards the edges of the transducer. The influence of this near-field effect is demonstrated, and a method to reduce this influence is proposed. By reducing the number of active sensor elements, an increased resolution can be obtained with the MV beamformer. This observation is directly opposite the well-known relation between the spatial extent of the aperture and the achievable resolution. The investigations are based on Field II simulated data using a 128-element transducer with a large spatial extent. The results show that an increased resolution can be obtained, when using only the central part of the transducer compared to using the entire spatial extent. Using the central 32 or 48 elements provides an increased resolution compared to using all 128 elements.

Original language	English
Title of host publication	Proceedings of the International Congress on Ultrasonics
Publisher	Elsevier
Publication date	2009
Pages	659-665
DOIs	https://doi.org/10.1016/j.phpro.2010.01.083
Publication status	Published - 2009
Event	2009 International Congress on Ultrasonics - Santiago, Chile Duration: 11 Jan 2009 → 16 Jan 2009

Conference

Conference	2009 International Congress on Ultrasonics
Country/Territory	Chile
City	Santiago
Period	11/01/2009 → 16/01/2009

Keywords

Adaptive Array Processing
Adaptive Beamforming
High Resolution Beamforming;
Minimum Variance Beamforming;
Ultrasound Imaging

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10.1016/j.phpro.2010.01.083

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@inproceedings{031654b4ddfa49b5bc2055cf673b5937,

title = "High Resolution Ultrasound Imaging Using Adaptive Beamforming with Reduced Number of Active Elements",

abstract = "In this paper, the adaptive, minimum variance ( MV) beamformer is applied to ultrasound data. Due to near-field properties, the energy of the ultrasound data reduces towards the edges of the transducer. The influence of this near-field effect is demonstrated, and a method to reduce this influence is proposed. By reducing the number of active sensor elements, an increased resolution can be obtained with the MV beamformer. This observation is directly opposite the well-known relation between the spatial extent of the aperture and the achievable resolution. The investigations are based on Field II simulated data using a 128-element transducer with a large spatial extent. The results show that an increased resolution can be obtained, when using only the central part of the transducer compared to using the entire spatial extent. Using the central 32 or 48 elements provides an increased resolution compared to using all 128 elements. ",

keywords = "Adaptive Array Processing, Adaptive Beamforming, High Resolution Beamforming;, Minimum Variance Beamforming;, Ultrasound Imaging ",

author = "Holfort, \{Iben Kraglund\} and Fredrik Gran and Jensen, \{J{\o}rgen Arendt\}",

year = "2009",

doi = "10.1016/j.phpro.2010.01.083",

language = "English",

pages = "659--665 ",

booktitle = "Proceedings of the International Congress on Ultrasonics",

publisher = "Elsevier",

address = "United Kingdom",

note = "2009 International Congress on Ultrasonics, 2009 ICU ; Conference date: 11-01-2009 Through 16-01-2009",

}

High Resolution Ultrasound Imaging Using Adaptive Beamforming with Reduced Number of Active Elements. / Holfort, Iben Kraglund; Gran, Fredrik; Jensen, Jørgen Arendt.
Proceedings of the International Congress on Ultrasonics. Elsevier, 2009. p. 659-665 .

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - High Resolution Ultrasound Imaging Using Adaptive Beamforming with Reduced Number of Active Elements

AU - Holfort, Iben Kraglund

AU - Gran, Fredrik

AU - Jensen, Jørgen Arendt

PY - 2009

Y1 - 2009

N2 - In this paper, the adaptive, minimum variance ( MV) beamformer is applied to ultrasound data. Due to near-field properties, the energy of the ultrasound data reduces towards the edges of the transducer. The influence of this near-field effect is demonstrated, and a method to reduce this influence is proposed. By reducing the number of active sensor elements, an increased resolution can be obtained with the MV beamformer. This observation is directly opposite the well-known relation between the spatial extent of the aperture and the achievable resolution. The investigations are based on Field II simulated data using a 128-element transducer with a large spatial extent. The results show that an increased resolution can be obtained, when using only the central part of the transducer compared to using the entire spatial extent. Using the central 32 or 48 elements provides an increased resolution compared to using all 128 elements.

AB - In this paper, the adaptive, minimum variance ( MV) beamformer is applied to ultrasound data. Due to near-field properties, the energy of the ultrasound data reduces towards the edges of the transducer. The influence of this near-field effect is demonstrated, and a method to reduce this influence is proposed. By reducing the number of active sensor elements, an increased resolution can be obtained with the MV beamformer. This observation is directly opposite the well-known relation between the spatial extent of the aperture and the achievable resolution. The investigations are based on Field II simulated data using a 128-element transducer with a large spatial extent. The results show that an increased resolution can be obtained, when using only the central part of the transducer compared to using the entire spatial extent. Using the central 32 or 48 elements provides an increased resolution compared to using all 128 elements.

KW - Adaptive Array Processing

KW - Adaptive Beamforming

KW - High Resolution Beamforming;

KW - Minimum Variance Beamforming;

KW - Ultrasound Imaging

U2 - 10.1016/j.phpro.2010.01.083

DO - 10.1016/j.phpro.2010.01.083

M3 - Article in proceedings

SP - 659

EP - 665

BT - Proceedings of the International Congress on Ultrasonics

PB - Elsevier

T2 - 2009 International Congress on Ultrasonics

Y2 - 11 January 2009 through 16 January 2009

ER -

High Resolution Ultrasound Imaging Using Adaptive Beamforming with Reduced Number of Active Elements

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Keywords

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