D 2008

Two Aspects of Calibrating a 3D Ultrasonic Computed-Tomography System

FILIPIK, A.; J. JAN; Igor PETERLÍK; Dušan HEMZAL; R. JIRIK et al.

Základní údaje

Originální název

Two Aspects of Calibrating a 3D Ultrasonic Computed-Tomography System

Autoři

FILIPIK, A.; J. JAN; Igor PETERLÍK; Dušan HEMZAL a R. JIRIK

Vydání

NEW YORK, 14TH NORDIC-BALTIC CONFERENCE ON BIOMEDICAL ENGINEERING AND MEDICAL PHYSICS, od s. 497-500, 4 s. 2008

Nakladatel

SPRINGER

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

20600 2.6 Medical engineering

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Forma vydání

elektronická verze "online"

Odkazy

Označené pro přenos do RIV

Ano

Organizační jednotka

Přírodovědecká fakulta

ISBN

978-3-540-69366-6

ISSN

EID Scopus

Klíčová slova anglicky

Ultrasonic computed tomography; image reconstruction; computed calibration; ultrasonic transducers

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 24. 8. 2020 10:02, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

The paper concerns providing the auxiliary data for image reconstruction in ultrasonic computed tomography (USCT) by calibrating the measuring USCT system. Basically two aspects are considered: calibrating the individual transducers as to their transmitting and receiving properties concerns, and calibrating the geometry of the measuring system, i.e. providing the exact information on the individual transducer deviations from the expected precise positions (including the individual delays in signal processing that act similarly as to the image reconstruction concerns). We will concentrate primarily on the 3D generalization of the principle of individual transducer efficiency and directional characteristics calibration that appeared for 2D case in |3| and complement the information by overview on the other calibration aspects as well. The described methods, based on se. empty measurements (no measuring phantoms needed) have been tested by both extensive simulations and by first practical applications utilising real measurement data. The tests proved the feasibility of the approach and its robustness under difficult circumstances - i.e. imprecise initial estimates of the calibrated quantities and presence of non-negligible noise in the measurements.