Publication result detail

Estimation of ultrasound attenuation coefficient using log-spectrum domain processing

JIŘÍK, R.; TAXT, T.; JAN, J.

Original Title

Estimation of ultrasound attenuation coefficient using log-spectrum domain processing

English Title

Estimation of ultrasound attenuation coefficient using log-spectrum domain processing

Type

Paper in proceedings (conference paper)

Original Abstract

Ultrasound attenuation coefficient is an important diagnostic parameter in medical ultrasonography. Furthermore, it is a parameter of a component related to the attenuation process of the space-variant point spread function, which can be used to improve the spatial resolution of ultrasound images through deconvolution. In this paper, a recently published approach to the estimation of the ultrasound attenuation coefficient from B-scan radiofrequency data is extended and explained in a detail. First, a parametric image of the mean attenuation coefficients between the probe and a given pixel position is computed by applying linear regression to log-spectra of short segments of radiofrequency signals. Three methods of forming the parametric image are presented. As a second step, the local tissue-specific attenuation coefficients are estimated in small regions of the obtained parametric image. The method has been tested on synthetic radiofrequency data and on radiofrequency data recorded from a tissue-mimicking phantom. A fairly good correlation with the known reference values was achieved.

English abstract

Ultrasound attenuation coefficient is an important diagnostic parameter in medical ultrasonography. Furthermore, it is a parameter of a component related to the attenuation process of the space-variant point spread function, which can be used to improve the spatial resolution of ultrasound images through deconvolution. In this paper, a recently published approach to the estimation of the ultrasound attenuation coefficient from B-scan radiofrequency data is extended and explained in a detail. First, a parametric image of the mean attenuation coefficients between the probe and a given pixel position is computed by applying linear regression to log-spectra of short segments of radiofrequency signals. Three methods of forming the parametric image are presented. As a second step, the local tissue-specific attenuation coefficients are estimated in small regions of the obtained parametric image. The method has been tested on synthetic radiofrequency data and on radiofrequency data recorded from a tissue-mimicking phantom. A fairly good correlation with the known reference values was achieved.

Keywords

Medical ultrasonic imaging, parametric imaging, ultrasound attenuation, attenuation maps

Key words in English

Medical ultrasonic imaging, parametric imaging, ultrasound attenuation, attenuation maps

Authors

JIŘÍK, R.; TAXT, T.; JAN, J.

RIV year

2011

Released

01.01.2004

Publisher

IEEE inc.

Location

USA

ISBN

0-7803-8440-7

Book

Proceedings of the 26th Annual Int. Conf. of the IEEE EMBS

Pages from

1411

Pages count

4

BibTex

@inproceedings{BUT11706,
  author="Radovan {Jiřík} and Torfinn {Taxt} and Jiří {Jan}",
  title="Estimation of ultrasound attenuation coefficient using log-spectrum domain processing",
  booktitle="Proceedings of the 26th Annual Int. Conf. of the IEEE EMBS",
  year="2004",
  pages="4",
  publisher="IEEE inc.",
  address="USA",
  isbn="0-7803-8440-7"
}