A fast 2D tissue motion estimator based on the phase of the intensity enables visualization of the propagation of the longitudinal movement in the carotid artery wall

Nilsson, Tobias; Ahlgren, Åsa Rydén; Albinsson, John; Segstedt, Simon; Nilsson, Jan; Jansson, Tomas; Persson, Henry; Cinthio, Magnus

doi:10.1109/ultsym.2013.0449

Cited by 7 publications

(3 citation statements)

References 19 publications

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“…The image data were transferred to a PC for post‐processing. Longitudinal motion of the intima‐media complex, and, when possible (see below) of the adventitial region, as well as the minimum lumen diameter (at end‐diastole), distension and intima‐media thickness (IMT) were automatically measured using an in‐house developed image analysis software based on Nilsson et al, 2013 and Nilsson et al, 2014 using MATLAB (The MathWorks Inc.). To measure intramural shear strain of the arterial wall, the longitudinal motion was measured in both the intima‐media and the adventitial regions, respectively, and the intramural shear strain angle (γ) was calculated using

where

and LMov is longitudinal movement, IM is intima‐media, Adv is adventitia, ed is end diastole, and d the radial distance between the two measurement positions (see also Figure 1 ).…”

Section: Methodsmentioning

confidence: 99%

Response of the carotid artery longitudinal motion to submaximal physical activity in healthy humans—Marked changes already at low workload

Ahlgren

Erlöv

Cinthio

2023

Physiological Reports

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Until about 20 years ago the longitudinal motion of the arterial wall has been assumed to be negligible in comparison with the diameter change (Nichols et al., 2005). We and others have, however, shown that the arterial wall of large arteries at rest do not only show a well-known diameter change during the cardiac cycle, but also shows a distinct longitudinal displacement, that is, a motion along the artery parallel to blood flow, of the same magnitude as the diameter change (

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where

and LMov is longitudinal movement, IM is intima‐media, Adv is adventitia, ed is end diastole, and d the radial distance between the two measurement positions (see also Figure 1 ).…”

Section: Methodsmentioning

confidence: 99%

Response of the carotid artery longitudinal motion to submaximal physical activity in healthy humans—Marked changes already at low workload

Ahlgren

Erlöv

Cinthio

2023

Physiological Reports

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“…Longitudinal movement (amplitude and max velocity), end-diastolic lumen diameter and IMT, distension and arterial strain (the relative diameter change) were automatically measured using an in-house developed image analysis software (Nilsson et al, 2013;Nilsson et al, 2014). The algorithm was initiated by a mouse click in the middle of the lumen, and the luminal intima and media adventitial interface of each wall were automatically outlined (Figure 2).…”

Section: Ultrasound Image Analysis Of Carotid Arterymentioning

confidence: 99%

Comparison of the multi‐phasic longitudinal displacement of the left and right common carotid artery in healthy humans

Zhu

Cinthio

Erlöv

et al. 2021

Clin Physio Funct Imaging

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Cardiovascular disease is a leading cause of morbidity and mortality in the industrialized world. To improve early diagnosis and facilitate early interventions of cardiovascular disease, improved knowledge of the physiological and pathophysiological behaviour of the vascular system is needed. Measurements of the distension of arteries in the radial direction, that is the diameter change, form the basis for estimation of arterial wall stiffness. Increased stiffness of large arteries is an established /important risk factor for cardiovascular diseases

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“…In the older subjects in (c) and (d), the first antegrade motion is preceded by a distinct retrograde motion. The longitudinal motion and diameter change were measured using the methods of Nilsson et al ( 2013 and 2014 ), respectively. The curves shown are an average of curves from four to six cardiac cycles.…”

Section: Introductionmentioning

confidence: 99%

The impact of geometry, intramural friction, and pressure on the antegrade longitudinal motion of the arterial wall: A phantom and finite element study

Sjöstrand

Widerstrom

Svensson

et al. 2023

Physiological Reports

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Longitudinal motion of the carotid arterial wall, as measured with ultrasound, has shown promise as an indicator of vascular health. The underlying mechanisms are however not fully understood. We have found, in in vivo studies, that blood pressure has a strong relation to the antegrade longitudinal displacement in early systole. Further, we have identified that a tapered geometry and the intramural friction in-between two parts of a vessel wall influence the longitudinal displacement. We therefore studied the interaction between pressure, vessel geometry and intramural friction, tapered and straight ultrasound phantoms in a paralleled hydraulic bench study and corresponding numerical models. Profound antegrade longitudinal motion was induced in the innermost part of both tapered phantoms and the numerical models, but to a lesser extent when intramural friction was increased in the simulations. Strong correlations (R = 0.82-0.96; p < 1e-3; k = 9.3-14 μm/mmHg) between longitudinal displacement and pulse pressure were found in six of seven regions of interest in tapered phantoms. The motion of the straight phantom and the corresponding numerical model was smaller, on average zero or close to zero. This study demonstrates that tapering of the lumen, low intramural friction, and pressure might be important conducive features to the antegrade longitudinal motion of the arterial wall in vivo.

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A fast 2D tissue motion estimator based on the phase of the intensity enables visualization of the propagation of the longitudinal movement in the carotid artery wall

Cited by 7 publications

References 19 publications

Response of the carotid artery longitudinal motion to submaximal physical activity in healthy humans—Marked changes already at low workload

Response of the carotid artery longitudinal motion to submaximal physical activity in healthy humans—Marked changes already at low workload

Comparison of the multi‐phasic longitudinal displacement of the left and right common carotid artery in healthy humans

The impact of geometry, intramural friction, and pressure on the antegrade longitudinal motion of the arterial wall: A phantom and finite element study

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