Cited 11 times in

Quantitative Assessment of Aortic Elasticity With Aging Using Velocity-Vector Imaging and Its Histologic Correlation

Title
Quantitative Assessment of Aortic Elasticity With Aging Using Velocity-Vector Imaging and Its Histologic Correlation
Authors
Sung-Ai Kim;Kyung Hye Lee;Jong-Won Ha;Yangsoo Jang;Ji Hyung Chung;Sungha Park;Ho-Yeon Won
Issue Date
2013
Journal Title
Arteriosclerosis Thromobosis and Vascular Biology
ISSN
1079-5642
Citation
Arteriosclerosis Thromobosis and Vascular Biology, Vol.33(6) : 1306~1312, 2013
Abstract
OBJECTIVE: Velocity-vector imaging (VVI) represents a valuable new method for noninvasive quantification of vascular properties associated with aging. The purpose of this study was to assess the correlations between VVI parameters and histological changes with aging. APPROACH AND RESULTS: Fourteen mongrel dogs were classified as either young (n=7; age, 1-2 years; female; weighing 22-29 kg) or senescent (n=7; age, 8-12 years; female; weighing 36-45 kg). The short-axis image of the descending thoracic aorta was obtained for VVI analysis with transesophageal echocardiography. The location of the image was identified using fluoroscopic guidance, and the aortic tissue was extracted. After dividing the aortic wall into 6 segments, both regional and segmental tissue collagen and elastin contents were quantified and correlated with the aortic elastic properties. In the regional analysis, the M-mode-derived aortic dimensions and elastic moduli except for intima-media thickness were not significantly different between the groups, whereas the VVI-derived aortic area and fractional area changes showed more dilated and stiffer aorta in senescent dogs. Also, fractional area change was significantly correlated with the tissue collagen content unlike the M-mode-derived elastic moduli. In the segmental analysis, the radial velocity, circumferential strain, and strain rates of VVI were more reduced in senescent dogs than young dogs, and the radial velocity and circumferential strain showed independent associations with the collagen content of the corresponding aortic wall. CONCLUSIONS: VVI was a feasible method for direct quantification of aortic elastic properties with a significant histological correlation.
URI
http://atvb.ahajournals.org/content/33/6/1306.long

http://ir.ymlib.yonsei.ac.kr/handle/22282913/87267
DOI
10.1161/ATVBAHA.113.301312
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Internal Medicine
1. 연구논문 > 5. Research Institutes > Cardiovascular Product Evaluation Center
Yonsei Authors
사서에게 알리기
  feedback
Files in This Item:
Export
RIS (EndNote)
XLS (Excel)
XML

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse