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Iterative 2D tissue motion tracking in ultrafast ultrasound imaging

Albinsson, John LU ; Hasegawa, Hideyuki; Takahashi, Hiroki LU ; Boni, Enrico; Ramalli, Alessandro; Ahlgren, Asa Rydén LU and Cinthio, Magnus LU (2018) In Applied Sciences (Switzerland) 8(5).
Abstract

In order to study longitudinal movement and intramural shearing of the arterial wall with a Lagrangian viewpoint using ultrafast ultrasound imaging, a new tracking scheme is required. We propose the use of an iterative tracking scheme based on temporary down-sampling of the frame-rate, anteroposterior tracking, and unbiased block-matching using two kernels per position estimate. The tracking scheme was evaluated on phantom B-mode cine loops and considered both velocity and displacement for a range of down-sampling factors (k = 1-128) at the start of the iterations. The cine loops had a frame rate of 1300-1500 Hz and were beamformed using delay-and-sum. The evaluation on phantom showed that both the mean estimation errors and the... (More)

In order to study longitudinal movement and intramural shearing of the arterial wall with a Lagrangian viewpoint using ultrafast ultrasound imaging, a new tracking scheme is required. We propose the use of an iterative tracking scheme based on temporary down-sampling of the frame-rate, anteroposterior tracking, and unbiased block-matching using two kernels per position estimate. The tracking scheme was evaluated on phantom B-mode cine loops and considered both velocity and displacement for a range of down-sampling factors (k = 1-128) at the start of the iterations. The cine loops had a frame rate of 1300-1500 Hz and were beamformed using delay-and-sum. The evaluation on phantom showed that both the mean estimation errors and the standard deviations decreased with an increasing initial down-sampling factor, while they increased with an increased velocity or larger pitch. A limited in vivo study shows that the major pattern of movement corresponds well with state-of-the-art low frame rate motion estimates, indicating that the proposed tracking scheme could enable the study of longitudinal movement of the intima-media complex using ultrafast ultrasound imaging, and is one step towards estimating the propagation velocity of the longitudinal movement of the arterial wall.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Arterial longitudinal wall movement, Block-matching, In vivo, Speckle tracking, Ultrafast ultrasound imaging
in
Applied Sciences (Switzerland)
volume
8
issue
5
publisher
Multidisciplinary Digital Publishing Institute (MDPI)
external identifiers
  • scopus:85046142449
DOI
10.3390/app8050662
language
English
LU publication?
yes
id
382441ad-75a5-4e08-98d0-53977493d2f0
date added to LUP
2018-05-14 13:45:38
date last changed
2018-05-29 12:17:07
@article{382441ad-75a5-4e08-98d0-53977493d2f0,
  abstract     = {<p>In order to study longitudinal movement and intramural shearing of the arterial wall with a Lagrangian viewpoint using ultrafast ultrasound imaging, a new tracking scheme is required. We propose the use of an iterative tracking scheme based on temporary down-sampling of the frame-rate, anteroposterior tracking, and unbiased block-matching using two kernels per position estimate. The tracking scheme was evaluated on phantom B-mode cine loops and considered both velocity and displacement for a range of down-sampling factors (k = 1-128) at the start of the iterations. The cine loops had a frame rate of 1300-1500 Hz and were beamformed using delay-and-sum. The evaluation on phantom showed that both the mean estimation errors and the standard deviations decreased with an increasing initial down-sampling factor, while they increased with an increased velocity or larger pitch. A limited in vivo study shows that the major pattern of movement corresponds well with state-of-the-art low frame rate motion estimates, indicating that the proposed tracking scheme could enable the study of longitudinal movement of the intima-media complex using ultrafast ultrasound imaging, and is one step towards estimating the propagation velocity of the longitudinal movement of the arterial wall.</p>},
  articleno    = {662},
  author       = {Albinsson, John and Hasegawa, Hideyuki and Takahashi, Hiroki and Boni, Enrico and Ramalli, Alessandro and Ahlgren, Asa Rydén and Cinthio, Magnus},
  keyword      = {Arterial longitudinal wall movement,Block-matching,In vivo,Speckle tracking,Ultrafast ultrasound imaging},
  language     = {eng},
  month        = {04},
  number       = {5},
  publisher    = {Multidisciplinary Digital Publishing Institute (MDPI)},
  series       = {Applied Sciences (Switzerland)},
  title        = {Iterative 2D tissue motion tracking in ultrafast ultrasound imaging},
  url          = {http://dx.doi.org/10.3390/app8050662},
  volume       = {8},
  year         = {2018},
}