Comparison of echo-power estimation using linearized video data and raw data for Dynamic Contrast-Enhanced Ultrasound

To estimate perfusion using Dynamic Contrast-Enhanced Ultrasound (DCE-US), some manufacturers provide software that analyses DICOM Raw Data formatted files. In those files, most of the information cannot be correctly interpreted except by the manufacturer software. This approach when available is of...

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Bibliographic Details
Published in2012 IEEE International Ultrasonics Symposium pp. 1335 - 1338
Main Authors Payen, T., Coron, A., Lamuraglia, M., Lucidarme, O., Le Guillou-Buffello, D., Bridal, S. L.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2012
Subjects
DICOM
Dynamic range
Estimation
Image coding
linearization
log-compression
perfusion quantification
Software
Transform coding
Ultrasonic imaging
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Summary:To estimate perfusion using Dynamic Contrast-Enhanced Ultrasound (DCE-US), some manufacturers provide software that analyses DICOM Raw Data formatted files. In those files, most of the information cannot be correctly interpreted except by the manufacturer software. This approach when available is often recommended over use of more accessible DICOM JPEG files which encapsulate ultrasound system images as compressed JPEG images. However, the manufacturers' dedicated software is machine specific with limited functionalities which hinders multicentric studies using different ultrasound machines. The objective of this work is to develop techniques and criteria defining conditions under which compressed video images obtained with the Aplio 50 from Toshiba can be used to accurately estimate contrast concentration. Dedicated CHIQ software from Toshiba was compared to two approaches based on compressed images: commercially available VueBox™ software from Bracco and in-laboratory software PixPower. Proportionality between echo-power estimates and dose of contrast agents in suspension was validated in vitro for the three approaches. VueBox™ and PixPower echo-power estimations from DCE-US sequences acquired in an in vivo tumor model were in agreement with those obtained with the CHIQ reference. This work shows that, for the dynamic ranges considered in this study, DICOM JPEG files can be used to accurately estimate the echo power from video compressed images using linearizing equations based on rigorous calibration steps.
ISBN:9781467345613
146734561X
ISSN:1051-0117
DOI:10.1109/ULTSYM.2012.0333