Publication detail

Attenuation Imaging in Ultrasonic Computed Tomography

Adam FILIPÍK

Original Title

Attenuation Imaging in Ultrasonic Computed Tomography

Czech Title

Útlumová ultrazvuková počítačová tomografie

English Title

Attenuation Imaging in Ultrasonic Computed Tomography

Type

conference paper

Language

en

Original Abstract

Ultrasonic Computed Tomography (USCT) is a relatively new imaging modality primarily aimed at breast cancer diagnosis. The examined object is placed in a tank, covered with several thousands of ultrasonic transducers. Each of these transducers is used for emitting and receiving ultrasonic waves. Ultrasonic attenuation parameters are estimated from the recorded radiofrequency signals and are then used for tomographic reconstruction of the object. This paper introduces an extension to a recently published novel approach to reconstructing attenuation images. Not only the directly transmitted waves, but also the reflected and refracted ultrasonic waves are used. Thus, a lot more information is incorporated into the reconstruction procedure and the resulting images more resemble the actual distribution of the local attenuation values.

Czech abstract

Ultrazvuková počítačová tomografie je relativně nová zobrazovací modalita, převážně určená pro diagnostiku rakoviny prsu. Objekt se vloží do tanku s vodou, obloženého několika tisíci ultrazvukových měničů. Každý měnič může být použit pro vysílání nebo příjmání uzv vlnění. Utlumové koeficienty objektu jsou odhadnuty z radiofrekvenčního signálu a jsou následně použity pro rekonstrukci obrazu. Tento článek prezentuje nově vzniklou, nedávno publikovanou metodu rekonstrukce dat. Jsou v ní použity nejenom přímé signály od měniče k měniči, ale i odražené vlny od samotného objektu. Takto je využito více informací a rekonstruovaný obraz sevíc blíží reálnému.

English abstract

Ultrasonic Computed Tomography (USCT) is a relatively new imaging modality primarily aimed at breast cancer diagnosis. The examined object is placed in a tank, covered with several thousands of ultrasonic transducers. Each of these transducers is used for emitting and receiving ultrasonic waves. Ultrasonic attenuation parameters are estimated from the recorded radiofrequency signals and are then used for tomographic reconstruction of the object. This paper introduces an extension to a recently published novel approach to reconstructing attenuation images. Not only the directly transmitted waves, but also the reflected and refracted ultrasonic waves are used. Thus, a lot more information is incorporated into the reconstruction procedure and the resulting images more resemble the actual distribution of the local attenuation values.

Keywords

Ultrasonic attenuation, transmission ultrasound, ultrasonic computed tomography, backprojection

RIV year

2005

Released

01.01.2005

Location

Praha

Pages from

222

Pages to

225

Pages count

4

BibTex


@inproceedings{BUT17760,
  author="Adam {Filipík} and Jiří {Jan}",
  title="Attenuation Imaging in Ultrasonic Computed Tomography",
  annote="Ultrasonic Computed Tomography (USCT) is a relatively new imaging modality primarily aimed at breast cancer diagnosis. The examined object is placed in a tank, covered with several thousands of ultrasonic transducers. Each of these transducers is used for emitting and receiving ultrasonic waves. Ultrasonic attenuation parameters are estimated from the recorded radiofrequency signals and are then used for tomographic reconstruction of the object. This paper introduces an extension to a recently published novel approach to reconstructing attenuation images. Not only the directly transmitted waves, but also the reflected and refracted ultrasonic waves are used. Thus, a lot more information is incorporated into the reconstruction procedure and the resulting images more resemble the actual distribution of the local attenuation values.",
  booktitle="Poster 2005",
  chapter="17760",
  year="2005",
  month="january",
  pages="222",
  type="conference paper"
}