Accepted Manuscript Letter to the Editor: Feature Tracking Cardiac Magnetic Resonance Imaging in the Assessment of Left Atrial Function Mohammadali Habibi, M.D. Bharath Ambale Venkatesh, Ph.D Joao AC. Lima, M.D. PII:
S0735-1097(14)01306-0
DOI:
10.1016/j.jacc.2013.12.052
Reference:
JAC 19947
To appear in:
Journal of the American College of Cardiology
Received Date: 17 December 2013 Accepted Date: 24 December 2013
Please cite this article as: Habibi M, Venkatesh BA, Lima JA, Letter to the Editor: Feature Tracking Cardiac Magnetic Resonance Imaging in the Assessment of Left Atrial Function, Journal of the American College of Cardiology (2014), doi: 10.1016/j.jacc.2013.12.052. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
ACCEPTED MANUSCRIPT
Letter to the Editor: Feature Tracking Cardiac Magnetic Resonance Imaging in the Assessment of Left Atrial Function
Correspondence to: Mohammadali Habibi, M.D. 600 N. Wolfe St. Carnegie 546 Baltimore, MD 21287 Tel: (443) 287- 3471 Fax: (443) 287- 3467 Email: [email protected]
AC C
EP
TE D
No conflicts of interest.
SC
Johns Hopkins University
M AN U
1
RI PT
Mohammadali Habibi, M.D.1 Bharath Ambale Venkatesh, Ph.D1 Joao AC Lima, M.D.1
1
ACCEPTED MANUSCRIPT
We read with great interest the review article by Brian Hoit where most of the available articles about the role of left atrial (LA) function and size in different cardiovascular disease has been reviewed (1). As mentioned, analyzing LA function has always been challenging given the
RI PT
distance of the LA from the chest wall, and its thin asymmetric wall. The presence of pulmonary veins and left atrial appendage also make it more challenging to evaluate LA function in
comparison to left ventricular function. On the other hand, cardiac magnetic resonance imaging
SC
(CMR) has been proposed as the gold standard method in the assessment of left atrial volume. However, as the author has mentioned, inability to measure phasic volumes had been a major
M AN U
limitation of CMR.
Feature-tracking (or tissue tracking) CMR is a new technique in the assessment of myocardial wall motion and measurement of heart chambers volume. This is a novel postprocessing technique which tracks myocardial wall using cine CMR images. With feature/tissue
TE D
tracking CMR, phasic LA volume, LA strain and strain rate, and LA velocity can be measured using cine images. In a recent study performed on 28 patients with atrial fibrillation, feature tracking MRI was able to detect changes in left strain, strain rate and velocity following catheter
EP
ablation (2). Preliminary studies in Multi Ethnic Study of Atherosclerosis have shown the usefulness of tissue tracking derived LA strain and strain rate in patients with atrial fibrillation
AC C
(3), heart failure (4), and myocardial infarction (5). The results of studies on reproducibility and repeatability of feature/tissue tracking methods in MRI have been mixed (6,7). Moreover, studies on left atrial structure and function from feature/tissue tracking CMR specifically have been lacking. While further technical improvements and more studies are required before consideration of feature/tissue tracking MRI
2
ACCEPTED MANUSCRIPT
in routine use, it is nevertheless a valuable tool for detailed assessment of phasic left atrial
AC C
EP
TE D
M AN U
SC
RI PT
structure and function.
3
ACCEPTED MANUSCRIPT
References 1.
Hoit BD. Left Atrial Size and Function: Role in Prognosis. Journal of the American College of Cardiology 2013. Ceelen F, Hunter RJ, Boubertakh R et al. Effect of atrial fibrillation ablation on
RI PT
2.
myocardial function: insights from cardiac magnetic resonance feature tracking analysis. The international journal of cardiovascular imaging 2013;29:1807-17.
Samiei S, Habibi M, Imai M et al. Association between Left Atrial Strain and Incident
SC
3.
Atrial Fibrillation in the Multi-Ethnic Study of Atherosclerosis. Journal of the American
4.
M AN U
College of Cardiology 2013;61:E1068-E1068.
Habibi M, Chahal H, Opdahl A et al. Left Atrial Function and Incident Heart Failure: Results from The Multi-Ethnic Study of Arteriosclerosis (MESA). Circulation 2012;126.
5.
Imai M, Venkatesh B, Samiei S et al. Association between left atrial function using
TE D
multimodality tissue tracking from cine MRI and myocardial scar in the multi-ethnic study of atherosclerosis (MESA). Journal of Cardiovascular Magnetic Resonance 2013;15:P266.
Morton G, Schuster A, Jogiya R, Kutty S, Beerbaum P, Nagel E. Inter-study
EP
6.
reproducibility of cardiovascular magnetic resonance myocardial feature tracking.
AC C
Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance 2012;14:43. 7.
Hor KN, Gottliebson WM, Carson C et al. Comparison of magnetic resonance feature tracking for strain calculation with harmonic phase imaging analysis. JACC Cardiovascular imaging 2010;3:144-51.
4
S0735-1097(14)01306-0
DOI:
10.1016/j.jacc.2013.12.052
Reference:
JAC 19947
To appear in:
Journal of the American College of Cardiology
Received Date: 17 December 2013 Accepted Date: 24 December 2013
Please cite this article as: Habibi M, Venkatesh BA, Lima JA, Letter to the Editor: Feature Tracking Cardiac Magnetic Resonance Imaging in the Assessment of Left Atrial Function, Journal of the American College of Cardiology (2014), doi: 10.1016/j.jacc.2013.12.052. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
ACCEPTED MANUSCRIPT
Letter to the Editor: Feature Tracking Cardiac Magnetic Resonance Imaging in the Assessment of Left Atrial Function
Correspondence to: Mohammadali Habibi, M.D. 600 N. Wolfe St. Carnegie 546 Baltimore, MD 21287 Tel: (443) 287- 3471 Fax: (443) 287- 3467 Email: [email protected]
AC C
EP
TE D
No conflicts of interest.
SC
Johns Hopkins University
M AN U
1
RI PT
Mohammadali Habibi, M.D.1 Bharath Ambale Venkatesh, Ph.D1 Joao AC Lima, M.D.1
1
ACCEPTED MANUSCRIPT
We read with great interest the review article by Brian Hoit where most of the available articles about the role of left atrial (LA) function and size in different cardiovascular disease has been reviewed (1). As mentioned, analyzing LA function has always been challenging given the
RI PT
distance of the LA from the chest wall, and its thin asymmetric wall. The presence of pulmonary veins and left atrial appendage also make it more challenging to evaluate LA function in
comparison to left ventricular function. On the other hand, cardiac magnetic resonance imaging
SC
(CMR) has been proposed as the gold standard method in the assessment of left atrial volume. However, as the author has mentioned, inability to measure phasic volumes had been a major
M AN U
limitation of CMR.
Feature-tracking (or tissue tracking) CMR is a new technique in the assessment of myocardial wall motion and measurement of heart chambers volume. This is a novel postprocessing technique which tracks myocardial wall using cine CMR images. With feature/tissue
TE D
tracking CMR, phasic LA volume, LA strain and strain rate, and LA velocity can be measured using cine images. In a recent study performed on 28 patients with atrial fibrillation, feature tracking MRI was able to detect changes in left strain, strain rate and velocity following catheter
EP
ablation (2). Preliminary studies in Multi Ethnic Study of Atherosclerosis have shown the usefulness of tissue tracking derived LA strain and strain rate in patients with atrial fibrillation
AC C
(3), heart failure (4), and myocardial infarction (5). The results of studies on reproducibility and repeatability of feature/tissue tracking methods in MRI have been mixed (6,7). Moreover, studies on left atrial structure and function from feature/tissue tracking CMR specifically have been lacking. While further technical improvements and more studies are required before consideration of feature/tissue tracking MRI
2
ACCEPTED MANUSCRIPT
in routine use, it is nevertheless a valuable tool for detailed assessment of phasic left atrial
AC C
EP
TE D
M AN U
SC
RI PT
structure and function.
3
ACCEPTED MANUSCRIPT
References 1.
Hoit BD. Left Atrial Size and Function: Role in Prognosis. Journal of the American College of Cardiology 2013. Ceelen F, Hunter RJ, Boubertakh R et al. Effect of atrial fibrillation ablation on
RI PT
2.
myocardial function: insights from cardiac magnetic resonance feature tracking analysis. The international journal of cardiovascular imaging 2013;29:1807-17.
Samiei S, Habibi M, Imai M et al. Association between Left Atrial Strain and Incident
SC
3.
Atrial Fibrillation in the Multi-Ethnic Study of Atherosclerosis. Journal of the American
4.
M AN U
College of Cardiology 2013;61:E1068-E1068.
Habibi M, Chahal H, Opdahl A et al. Left Atrial Function and Incident Heart Failure: Results from The Multi-Ethnic Study of Arteriosclerosis (MESA). Circulation 2012;126.
5.
Imai M, Venkatesh B, Samiei S et al. Association between left atrial function using
TE D
multimodality tissue tracking from cine MRI and myocardial scar in the multi-ethnic study of atherosclerosis (MESA). Journal of Cardiovascular Magnetic Resonance 2013;15:P266.
Morton G, Schuster A, Jogiya R, Kutty S, Beerbaum P, Nagel E. Inter-study
EP
6.
reproducibility of cardiovascular magnetic resonance myocardial feature tracking.
AC C
Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance 2012;14:43. 7.
Hor KN, Gottliebson WM, Carson C et al. Comparison of magnetic resonance feature tracking for strain calculation with harmonic phase imaging analysis. JACC Cardiovascular imaging 2010;3:144-51.
4
