Adaptive image inversion of contrast 3D echocardiography for enabling automated analysis
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Adaptive image inversion of contrast 3D echocardiography for enabling automated analysis. / Shaheen, Anjuman; Rajpoot, Kashif.
In: Computers in Biology and Medicine, Vol. 63, 01.08.2015, p. 99-107.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Adaptive image inversion of contrast 3D echocardiography for enabling automated analysis
AU - Shaheen, Anjuman
AU - Rajpoot, Kashif
PY - 2015/8/1
Y1 - 2015/8/1
N2 - IntroductionContrast 3D echocardiography (C3DE) is commonly used to enhance the visual quality of ultrasound images in comparison with non-contrast 3D echocardiography (3DE). Although the image quality in C3DE is perceived to be improved for visual analysis, however it actually deteriorates for the purpose of automatic or semi-automatic analysis due to higher speckle noise and intensity inhomogeneity. Therefore, the LV endocardial feature extraction and segmentation from the C3DE images remains a challenging problem.MethodsTo address this challenge, this work proposes an adaptive pre-processing method to invert the appearance of C3DE image. The image inversion is based on an image intensity threshold value which is automatically estimated through image histogram analysis.ResultsIn the inverted appearance, the LV cavity appears dark while the myocardium appears bright thus making it similar in appearance to a 3DE image. Moreover, the resulting inverted image has high contrast and low noise appearance, yielding strong LV endocardium boundary and facilitating feature extraction for segmentation.ConclusionsOur results demonstrate that the inverse appearance of contrast image enables the subsequent LV segmentation.
AB - IntroductionContrast 3D echocardiography (C3DE) is commonly used to enhance the visual quality of ultrasound images in comparison with non-contrast 3D echocardiography (3DE). Although the image quality in C3DE is perceived to be improved for visual analysis, however it actually deteriorates for the purpose of automatic or semi-automatic analysis due to higher speckle noise and intensity inhomogeneity. Therefore, the LV endocardial feature extraction and segmentation from the C3DE images remains a challenging problem.MethodsTo address this challenge, this work proposes an adaptive pre-processing method to invert the appearance of C3DE image. The image inversion is based on an image intensity threshold value which is automatically estimated through image histogram analysis.ResultsIn the inverted appearance, the LV cavity appears dark while the myocardium appears bright thus making it similar in appearance to a 3DE image. Moreover, the resulting inverted image has high contrast and low noise appearance, yielding strong LV endocardium boundary and facilitating feature extraction for segmentation.ConclusionsOur results demonstrate that the inverse appearance of contrast image enables the subsequent LV segmentation.
KW - Contrast 3D echocardiography
KW - 3D echocardiography
KW - Image inversion
KW - LV segmentation
KW - Histogram analysis
U2 - 10.1016/j.compbiomed.2015.05.009
DO - 10.1016/j.compbiomed.2015.05.009
M3 - Article
VL - 63
SP - 99
EP - 107
JO - Computers in biology and medicine
JF - Computers in biology and medicine
SN - 0010-4825
ER -