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Accurate quantification of atherosclerotic plaque volume by 3D vascular ultrasound using the volumetric linear array method.

Abstract：

INTRODUCTION:Direct quantification of atherosclerotic plaque volume by three-dimensional vascular ultrasound (3DVUS) is more reproducible than 2DUS-based three-dimensional (2D/3D) techniques that generate pseudo-3D volumes from summed 2D plaque areas; however, its accuracy has not been reported. We aimed to determine 3DVUS accuracy for plaque volume measurement with special emphasis on small plaques (a hallmark of early atherosclerosis). METHODS:The in vitro study consisted of nine phantoms of different volumes (small and medium-large) embedded at variable distances from the surface (superficial vs. >5 cm-depth) and comparison of 3DVUS data generated using a novel volumetric-linear array method with the real phantom volumes. The in vivo study was undertaken in a rabbit model of atherosclerosis in which 3DVUS and 2D/3D volume measurements were correlated against gold-standard histological measurements. RESULTS:In the in vitro setting, there was a strong correlation between 3DVUS measures and real phantom volume both for small (3.0-64.5 mm(3) size) and medium-large (91.1-965.5 mm(3) size) phantoms embedded superficially, with intraclass correlation coefficients (ICC) of 0.99 and 0.98, respectively; conversely, when phantoms were placed at >5 cm, the correlation was only moderate (ICC = 0.67). In the in vivo setting there was strong correlation between 3DVUS-measured plaque volumes and the histological gold-standard (ICC = 0.99 [4.02-92.5 mm(3) size]). Conversely, the correlation between 2D/3D values and the histological gold standard (sum of plaque areas) was weaker (ICC = 0.87 [49-520 mm(2) size]), with large dispersion of the differences between measurements in Bland-Altman plots (mean error, 79.2 mm(2)). CONCLUSIONS:3DVUS using the volumetric-linear array method accurately measures plaque volumes, including those of small plaques. Measurements are more accurate for superficial arterial territories than for deep territories.

journal_name

Atherosclerosis

journal_title

Atherosclerosis

authors

López-Melgar B,Fernández-Friera L,Sánchez-González J,Vilchez JP,Cecconi A,Mateo J,Peñalvo JL,Oliva B,García-Ruiz JM,Kauffman S,Jiménez-Borreguero LJ,Ruiz-Cabello J,Fernández-Ortiz A,Ibáñez B,Fuster V

doi

10.1016/j.atherosclerosis.2016.03.002

subject

Has Abstract

pub_date

2016-05-01 00:00:00

pages

230-7

eissn

0021-9150

issn

1879-1484

pii

S0021-9150(16)30077-6

journal_volume

248

pub_type

杂志文章

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Accurate quantification of atherosclerotic plaque volume by 3D vascular ultrasound using the volumetric linear array method.