Further development of synthetic aperture real-time 3D scanning with a rotating phased array

Svetoslav Nikolov; Borislav Gueorguiev Tomov; Fredrik Gran; R. Dufait; Jørgen Arendt Jensen

doi:10.1109/ULTSYM.2003.1293286

Further development of synthetic aperture real-time 3D scanning with a rotating phased array

Svetoslav Nikolov, Borislav Gueorguiev Tomov, Fredrik Gran, R. Dufait, Jørgen Arendt Jensen

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

In a precious paper we have presented an approach combing synthetic transmit aperture imaging with a rotating phased array. The method is implemented on a specially made Vermon transducer capable of rotating at 5 Hz. The center frequency of the transducer is 3.2 MHz, and the pitch is 0.22 mm. The array active diameter in 16mm and the number of elements is 64. The method is capable of scanning 10 volume/sec. The order in which the transmit elements were fired made it possible to achieve lateral resolution of a 0.94 mm at 45 mm depth, which is comparable to a standard B-mode scan. The penetration depth was > 10 cm due to the use of 20 μs long frequency modulated (FM) pulses. The dynamic range was limited to 45 dB because of the nonoptimized FM pulse and grating lobes. This paper presents the work on improving the image quality of the approach: (1) instead of defocusing conventional focusing with an f-number of 1 is used to transmit to create spherical waves, (2) virtual receive elements are synthesized to decrease noise and grating lobes, (3) the compression filter for the FM pulses was modified to suppress the range lobes (4) additional hardware for synchronization is built.

Original language	English
Title of host publication	2003 IEEE Symposium on Ultrasonics Proceedings
Volume	2
Publisher	IEEE
Publication date	2003
Pages	1899-1902
ISBN (Print)	0-7803-7922-5
DOIs	https://doi.org/10.1109/ULTSYM.2003.1293286
Publication status	Published - 2003
Event	2003 IEEE Ultrasonics Symposium - Honolulu, United States Duration: 5 Oct 2003 → 8 Oct 2003 http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=9075

Conference

Conference	2003 IEEE Ultrasonics Symposium
Country/Territory	United States
City	Honolulu
Period	05/10/2003 → 08/10/2003
Internet address	http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=9075

Series	I E E E International Ultrasonics Symposium. Proceedings
ISSN	1051-0117

Bibliographical note

Copyright: 2003 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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title = "Further development of synthetic aperture real-time 3D scanning with a rotating phased array",

abstract = "In a precious paper we have presented an approach combing synthetic transmit aperture imaging with a rotating phased array. The method is implemented on a specially made Vermon transducer capable of rotating at 5 Hz. The center frequency of the transducer is 3.2 MHz, and the pitch is 0.22 mm. The array active diameter in 16mm and the number of elements is 64. The method is capable of scanning 10 volume/sec. The order in which the transmit elements were fired made it possible to achieve lateral resolution of a 0.94 mm at 45 mm depth, which is comparable to a standard B-mode scan. The penetration depth was > 10 cm due to the use of 20 μs long frequency modulated (FM) pulses. The dynamic range was limited to 45 dB because of the nonoptimized FM pulse and grating lobes. This paper presents the work on improving the image quality of the approach: (1) instead of defocusing conventional focusing with an f-number of 1 is used to transmit to create spherical waves, (2) virtual receive elements are synthesized to decrease noise and grating lobes, (3) the compression filter for the FM pulses was modified to suppress the range lobes (4) additional hardware for synchronization is built.",

author = "Svetoslav Nikolov and Tomov, {Borislav Gueorguiev} and Fredrik Gran and R. Dufait and Jensen, {J{\o}rgen Arendt}",

note = "Copyright: 2003 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE; 2003 IEEE Ultrasonics Symposium, IUS 2003 ; Conference date: 05-10-2003 Through 08-10-2003",

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Nikolov, S, Tomov, BG, Gran, F, Dufait, R & Jensen, JA 2003, Further development of synthetic aperture real-time 3D scanning with a rotating phased array. in 2003 IEEE Symposium on Ultrasonics Proceedings. vol. 2, IEEE, I E E E International Ultrasonics Symposium. Proceedings, pp. 1899-1902, 2003 IEEE Ultrasonics Symposium, Honolulu, Hawaii, United States, 05/10/2003. https://doi.org/10.1109/ULTSYM.2003.1293286

Further development of synthetic aperture real-time 3D scanning with a rotating phased array. / Nikolov, Svetoslav; Tomov, Borislav Gueorguiev; Gran, Fredrik et al.
2003 IEEE Symposium on Ultrasonics Proceedings. Vol. 2 IEEE, 2003. p. 1899-1902 (I E E E International Ultrasonics Symposium. Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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AU - Dufait, R.

AU - Jensen, Jørgen Arendt

N1 - Copyright: 2003 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

PY - 2003

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N2 - In a precious paper we have presented an approach combing synthetic transmit aperture imaging with a rotating phased array. The method is implemented on a specially made Vermon transducer capable of rotating at 5 Hz. The center frequency of the transducer is 3.2 MHz, and the pitch is 0.22 mm. The array active diameter in 16mm and the number of elements is 64. The method is capable of scanning 10 volume/sec. The order in which the transmit elements were fired made it possible to achieve lateral resolution of a 0.94 mm at 45 mm depth, which is comparable to a standard B-mode scan. The penetration depth was > 10 cm due to the use of 20 μs long frequency modulated (FM) pulses. The dynamic range was limited to 45 dB because of the nonoptimized FM pulse and grating lobes. This paper presents the work on improving the image quality of the approach: (1) instead of defocusing conventional focusing with an f-number of 1 is used to transmit to create spherical waves, (2) virtual receive elements are synthesized to decrease noise and grating lobes, (3) the compression filter for the FM pulses was modified to suppress the range lobes (4) additional hardware for synchronization is built.

AB - In a precious paper we have presented an approach combing synthetic transmit aperture imaging with a rotating phased array. The method is implemented on a specially made Vermon transducer capable of rotating at 5 Hz. The center frequency of the transducer is 3.2 MHz, and the pitch is 0.22 mm. The array active diameter in 16mm and the number of elements is 64. The method is capable of scanning 10 volume/sec. The order in which the transmit elements were fired made it possible to achieve lateral resolution of a 0.94 mm at 45 mm depth, which is comparable to a standard B-mode scan. The penetration depth was > 10 cm due to the use of 20 μs long frequency modulated (FM) pulses. The dynamic range was limited to 45 dB because of the nonoptimized FM pulse and grating lobes. This paper presents the work on improving the image quality of the approach: (1) instead of defocusing conventional focusing with an f-number of 1 is used to transmit to create spherical waves, (2) virtual receive elements are synthesized to decrease noise and grating lobes, (3) the compression filter for the FM pulses was modified to suppress the range lobes (4) additional hardware for synchronization is built.

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M3 - Article in proceedings

SN - 0-7803-7922-5

VL - 2

T3 - I E E E International Ultrasonics Symposium. Proceedings

SP - 1899

EP - 1902

BT - 2003 IEEE Symposium on Ultrasonics Proceedings

PB - IEEE

T2 - 2003 IEEE Ultrasonics Symposium

Y2 - 5 October 2003 through 8 October 2003

ER -

Further development of synthetic aperture real-time 3D scanning with a rotating phased array

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