Influence of insonification angle on echogenicity of B-mode images of atherosclerotic plaque in vitro

Jens E. Wilhjelm; Søren Kragh Jespersen; J. U. Hansen; N.I.H. Nyssen

doi:10.1109/ULTSYM.1998.765250

Influence of insonification angle on echogenicity of B-mode images of atherosclerotic plaque in vitro

Jens E. Wilhjelm, Søren Kragh Jespersen, J. U. Hansen, N.I.H. Nyssen

Technical University of Denmark

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Abstract

A newly developed (off-line) spatial compound scanner was used to scan formalin-fixed atherosclerotic carotid plaques. Forty-eight B-mode images were recorded using 7 insonification angles. All calculations were done on the envelope-detected image data. The mean amplitude level (MAL) in (relative) volts was calculated for the plaque region in each image. The standard deviation over the 48 MAL values were for each of the 7 angles between 0.12 V and 0.18 V. For each scan plane, the standard deviation was also calculated over the 7 images. The mean and standard deviation of these 48 numbers were 0.07 V and 0.04 V, respectively. Thus based on these data, the variation from scan plane to scan plane is normally larger than the variation over angle for a single scan plane

Original language	English
Journal	I E E E International Ultrasonics Symposium. Proceedings
Volume	2
Pages (from-to)	1599 - 1602
ISSN	1051-0117
DOIs	https://doi.org/10.1109/ULTSYM.1998.765250
Publication status	Published - 1998
Event	1998 IEEE Ultrasonics Symposium - Sendai, Japan Duration: 5 Oct 1998 → 8 Oct 1998 http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6171

Conference

Conference	1998 IEEE Ultrasonics Symposium
Country/Territory	Japan
City	Sendai
Period	05/10/1998 → 08/10/1998
Internet address	http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=6171

Bibliographical note

Copyright 1998 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 = "Influence of insonification angle on echogenicity of B-mode images of atherosclerotic plaque in vitro",

abstract = "A newly developed (off-line) spatial compound scanner was used to scan formalin-fixed atherosclerotic carotid plaques. Forty-eight B-mode images were recorded using 7 insonification angles. All calculations were done on the envelope-detected image data. The mean amplitude level (MAL) in (relative) volts was calculated for the plaque region in each image. The standard deviation over the 48 MAL values were for each of the 7 angles between 0.12 V and 0.18 V. For each scan plane, the standard deviation was also calculated over the 7 images. The mean and standard deviation of these 48 numbers were 0.07 V and 0.04 V, respectively. Thus based on these data, the variation from scan plane to scan plane is normally larger than the variation over angle for a single scan plane",

author = "Wilhjelm, {Jens E.} and Jespersen, {S{\o}ren Kragh} and Hansen, {J. U.} and N.I.H. Nyssen",

note = "Copyright 1998 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.; 1998 IEEE Ultrasonics Symposium, IUS 1998 ; Conference date: 05-10-1998 Through 08-10-1998",

year = "1998",

doi = "10.1109/ULTSYM.1998.765250",

language = "English",

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T1 - Influence of insonification angle on echogenicity of B-mode images of atherosclerotic plaque in vitro

AU - Wilhjelm, Jens E.

AU - Jespersen, Søren Kragh

AU - Hansen, J. U.

AU - Nyssen, N.I.H.

N1 - Copyright 1998 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 - 1998

Y1 - 1998

N2 - A newly developed (off-line) spatial compound scanner was used to scan formalin-fixed atherosclerotic carotid plaques. Forty-eight B-mode images were recorded using 7 insonification angles. All calculations were done on the envelope-detected image data. The mean amplitude level (MAL) in (relative) volts was calculated for the plaque region in each image. The standard deviation over the 48 MAL values were for each of the 7 angles between 0.12 V and 0.18 V. For each scan plane, the standard deviation was also calculated over the 7 images. The mean and standard deviation of these 48 numbers were 0.07 V and 0.04 V, respectively. Thus based on these data, the variation from scan plane to scan plane is normally larger than the variation over angle for a single scan plane

AB - A newly developed (off-line) spatial compound scanner was used to scan formalin-fixed atherosclerotic carotid plaques. Forty-eight B-mode images were recorded using 7 insonification angles. All calculations were done on the envelope-detected image data. The mean amplitude level (MAL) in (relative) volts was calculated for the plaque region in each image. The standard deviation over the 48 MAL values were for each of the 7 angles between 0.12 V and 0.18 V. For each scan plane, the standard deviation was also calculated over the 7 images. The mean and standard deviation of these 48 numbers were 0.07 V and 0.04 V, respectively. Thus based on these data, the variation from scan plane to scan plane is normally larger than the variation over angle for a single scan plane

U2 - 10.1109/ULTSYM.1998.765250

DO - 10.1109/ULTSYM.1998.765250

M3 - Conference article

SN - 1051-0117

VL - 2

SP - 1599

EP - 1602

JO - I E E E International Ultrasonics Symposium. Proceedings

JF - I E E E International Ultrasonics Symposium. Proceedings

T2 - 1998 IEEE Ultrasonics Symposium

Y2 - 5 October 1998 through 8 October 1998

ER -

Influence of insonification angle on echogenicity of B-mode images of atherosclerotic plaque in vitro

Abstract

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