Temperature distribution measurement based on ML-EM using square type ultrasonic CT system

Author

Mukoyama, Masato ; Ohga, Keiji ; Yabe, Yosuke ; Takayama, Jun-ya ; Ohyama, Shinji

Author_Institution

Grad. Sch. of Sci. & Eng., Tokyo Inst. of Technol., Tokyo, Japan

fYear

2011

fDate

13-18 Sept. 2011

Firstpage

2779

Lastpage

2784

Abstract

In this paper, a measurement method for cross-sectional temperature distributions is considered. A novel method based on an acoustic computed tomography (CT) technique is proposed. Specifically, the temperature distributions are estimated using the time of flight (ToF) of multidirectional ultrasonic propagation paths. Maximum Likelihood - Expectation Maximization (ML-EM) method and the Median Filter are introduced to reconstruct the temperature distributions in a square area properly. The effectiveness of the proposed reconstruction method is confirmed experimentally.

Keywords

acoustic tomography; computerised tomography; maximum likelihood estimation; median filters; optimisation; temperature measurement; ML-EM method; ToF; acoustic CT technique; acoustic computed tomography technique; cross-sectional temperature distribution measurement; maximum likelihood-expectation maximization method; median filter; multidirectional ultrasonic propagation paths; square type ultrasonic CT system; time of flight; Acoustics; Computed tomography; Mathematical model; Temperature distribution; Temperature measurement; Transducers; Ultrasonic variables measurement; Acoustic tomography; ML-EM; Temperature distribution measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

SICE Annual Conference (SICE), 2011 Proceedings of

Conference_Location

Tokyo

ISSN

pending

Print_ISBN

978-1-4577-0714-8

Type

conf

Filename

6060453