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Is there an underestimation of intima-media thickness based on M-mode ultrasound technique in the abdominal aorta?

Dahlén, Elsa M; Andreasson, Thomas; Cinthio, Magnus LU ; Nystrom, Fredrik H; Östgren, Carl Johan and Länne, Toste (2012) In Clinical Physiology and Functional Imaging 32(1). p.1-4
Abstract
Measuring intima-media thickness (IMT) in the common carotid artery (CCA) is a valuable resource for the evaluation of subclinical atherosclerosis. The main objective of this study was to explore whether a B-mode ultrasound technique, Philips ATL, and an M-mode ultrasound technique, Wall Track System (WTS), show interchangeable results when measured in CCA and the abdominal aorta (AA). A total of 24 healthy, young subjects were examined. IMT and lumen diameter (LD) of the AA and the CCA were measured twice by two skilled ultrasonographers with two different ultrasound equipment B-mode: (Philips, ATL and M-mode: WTS).The intra-observer variability of IMT in CCA and AA using B-mode showed a coefficient of variation 8% and 9%, and with M-mode... (More)
Measuring intima-media thickness (IMT) in the common carotid artery (CCA) is a valuable resource for the evaluation of subclinical atherosclerosis. The main objective of this study was to explore whether a B-mode ultrasound technique, Philips ATL, and an M-mode ultrasound technique, Wall Track System (WTS), show interchangeable results when measured in CCA and the abdominal aorta (AA). A total of 24 healthy, young subjects were examined. IMT and lumen diameter (LD) of the AA and the CCA were measured twice by two skilled ultrasonographers with two different ultrasound equipment B-mode: (Philips, ATL and M-mode: WTS).The intra-observer variability of IMT in CCA and AA using B-mode showed a coefficient of variation 8% and 9%, and with M-mode 11% and 15%, respectively. Interobserver variability of IMT in CCA and AA using B-mode was 6% and 12%, and with M-mode 11% and 18%, respectively. CCA IMT was 0·53 ± 0·07 and 0·53 ± 0·09 mm using B-mode and M-mode, respectively. However, in AA, IMT was 0·61 ± 0·05 and 0·54 ± 0·10 mm using B-mode and M-mode, respectively. Thus, AA IMT was 11·5% thicker using B-mode (P<0·01). We received adequate IMT readings from the carotid artery as well as the AA using two commonly used B-mode and M-mode techniques. B-mode technique seems to show less variability, especially in the AA. More importantly, the two techniques measured different IMT thickness in the aorta, emphasizing the importance of using similar technique when comparing the impact of absolute values of IMT on cardiovascular disease. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Clinical Physiology and Functional Imaging
volume
32
issue
1
pages
1 - 4
publisher
Wiley Online Library
external identifiers
  • pmid:22152072
  • wos:000297928900001
  • scopus:83555174902
ISSN
1475-0961
DOI
10.1111/j.1475-097X.2011.01045.x
language
English
LU publication?
yes
id
e649d851-1e1a-432c-b7e0-7becfc75dc47 (old id 2274285)
date added to LUP
2012-01-11 12:05:33
date last changed
2017-01-01 03:13:31
@article{e649d851-1e1a-432c-b7e0-7becfc75dc47,
  abstract     = {Measuring intima-media thickness (IMT) in the common carotid artery (CCA) is a valuable resource for the evaluation of subclinical atherosclerosis. The main objective of this study was to explore whether a B-mode ultrasound technique, Philips ATL, and an M-mode ultrasound technique, Wall Track System (WTS), show interchangeable results when measured in CCA and the abdominal aorta (AA). A total of 24 healthy, young subjects were examined. IMT and lumen diameter (LD) of the AA and the CCA were measured twice by two skilled ultrasonographers with two different ultrasound equipment B-mode: (Philips, ATL and M-mode: WTS).The intra-observer variability of IMT in CCA and AA using B-mode showed a coefficient of variation 8% and 9%, and with M-mode 11% and 15%, respectively. Interobserver variability of IMT in CCA and AA using B-mode was 6% and 12%, and with M-mode 11% and 18%, respectively. CCA IMT was 0·53 ± 0·07 and 0·53 ± 0·09 mm using B-mode and M-mode, respectively. However, in AA, IMT was 0·61 ± 0·05 and 0·54 ± 0·10 mm using B-mode and M-mode, respectively. Thus, AA IMT was 11·5% thicker using B-mode (P&lt;0·01). We received adequate IMT readings from the carotid artery as well as the AA using two commonly used B-mode and M-mode techniques. B-mode technique seems to show less variability, especially in the AA. More importantly, the two techniques measured different IMT thickness in the aorta, emphasizing the importance of using similar technique when comparing the impact of absolute values of IMT on cardiovascular disease.},
  author       = {Dahlén, Elsa M and Andreasson, Thomas and Cinthio, Magnus and Nystrom, Fredrik H and Östgren, Carl Johan and Länne, Toste},
  issn         = {1475-0961},
  language     = {eng},
  number       = {1},
  pages        = {1--4},
  publisher    = {Wiley Online Library},
  series       = {Clinical Physiology and Functional Imaging},
  title        = {Is there an underestimation of intima-media thickness based on M-mode ultrasound technique in the abdominal aorta?},
  url          = {http://dx.doi.org/10.1111/j.1475-097X.2011.01045.x},
  volume       = {32},
  year         = {2012},
}