Effect of CDMA techniques with Kasami codes on ultrasound-image quality parameters

Author

Diego, Cristina ; Hernández, Álvaro ; Jiménez, Ana ; Holm, Sverre ; Aparicio, Joaquìn

Author_Institution

Dept. of Electron., Univ. of Alcala, Madrid, Spain

fYear

2012

fDate

13-16 May 2012

Firstpage

1833

Lastpage

1837

Abstract

This works presents an analysis of the benefits of CDMA (Code Division for Multiple Access) excitation techniques on the quality parameters of ultrasonic phased array images such as gratinglobes, sidelobes, dynamic range, lateral resolution and range resolution. In order to consolidate these benefits, a comparison between phased array excitation and CDMA techniques in airborne transmission is performed. Furthermore it is shown how not only image rate, but also range resolution and SNR (Signal to Noise Ratio) are improved with CDMA excitation techniques. A disadvantage of the proposal is a decreased dynamic range in the B-Scan image, therefore a different emission schema is proposed.

Keywords

code division multiple access; image coding; image resolution; image scanners; medical image processing; ultrasonic imaging; B-scan image; CDMA excitation technique; Kasami code; SNR; airborne transmission; code division for multiple access excitation technique; dynamic range; gratinglobe; lateral resolution; range resolution; sidelobe; signal to noise ratio; ultrasonic phased array images quality parameters; Acoustics; Arrays; Dynamic range; Gratings; Multiaccess communication; Signal to noise ratio; Ultrasonic imaging; B-Scan; CDMA; Phased array; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference (I2MTC), 2012 IEEE International

Conference_Location

Graz

ISSN

1091-5281

Print_ISBN

978-1-4577-1773-4

Type

conf

DOI

10.1109/I2MTC.2012.6229427

Filename

6229427