Comparison of Kalman-filter-based approaches for block matching in arterial wall motion analysis from B-mode ultrasound

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Comparison of Kalman-filter-based approaches for block matching in arterial wall motion analysis from B-mode ultrasound (EN)

Stoitsis, J (EN)
Gastounioti, A (EN)
Nikita, KS (EN)
Golemati, S (EN)

journalArticle (EN)

2014-03-01T01:35:26Z
2011 (EN)


Block matching (BM) has been previously used to estimate motion of the carotid artery from B-mode ultrasound image sequences. In this paper, Kalman filtering (KF) was incorporated in this conventional method in two distinct scenarios: (a) as an adaptive strategy, by renewing the reference block and (b) by renewing the displacements estimated by BM or adaptive BM. All methods resulting from combinations of BM and KF with the two scenarios were evaluated on synthetic image sequences by computing the warping index, defined as the mean squared error between the real and estimated displacements. Adaptive BM, followed by an update through the second scenario at the end of tracking, ABM-KF-K2, minimized the warping index and yielded average displacement error reductions of 24% with respect to BM. The same method decreased estimation bias and jitter over varying center frequencies by 30% and 64%, respectively, with respect to BM. These results demonstrated the increased accuracy and robustness of ABM-KF-K2 in motion tracking of the arterial wall from B-mode ultrasound images, which is crucial in the study of mechanical properties of normal and diseased arterial segments. © 2011 IOP Publishing Ltd. (EN)

Engineering, Multidisciplinary (EN)
Instruments & Instrumentation (EN)

Estimation bias (EN)
Kalman filter (EN)
Jitter (EN)
Block Matching (EN)
Frequency estimation (EN)
motion analysis (EN)
Displacement errors (EN)
arterial wall (EN)
Arterial wall (EN)
B-mode ultrasound images (EN)
Motion compensation (EN)
Carotid artery (EN)
Kalman filters (EN)
Motion tracking (EN)
block matching (EN)
Center frequency (EN)
Mechanical properties (EN)
ultrasound (EN)
Conventional methods (EN)
Kalman-filtering (EN)
Ultrasonics (EN)
Reference block (EN)
Synthetic images (EN)
Adaptive strategy (EN)
Motion analysis (EN)
Mean squared error (EN)

Measurement Science and Technology (EN)

Αγγλική γλώσσα

IOP PUBLISHING LTD (EN)




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