Erschienen in:
09.11.2017 | Original Article
Heterogeneity of longitudinal and circumferential contraction in relation to late gadolinium enhancement in hypertrophic cardiomyopathy patients with preserved left ventricular ejection fraction
verfasst von:
Keita Sakamoto, Noriko Oyama-Manabe, Osamu Manabe, Tadao Aikawa, Yasuka Kikuchi, Harue Sasai-Masuko, Masanao Naya, Kohsuke Kudo, Fumi Kato, Nagara Tamaki, Hiroki Shirato
Erschienen in:
Japanese Journal of Radiology
|
Ausgabe 2/2018
Einloggen, um Zugang zu erhalten
Abstract
Purpose
To evaluate heterogeneity of myocardial contraction in relation to extensive late gadolinium enhancement (LGE) in hypertrophic cardiomyopathy (HCM) patients with preserved left ventricular ejection fraction, using fast strain-encoded magnetic resonance imaging.
Materials and methods
Twenty-two HCM patients and 24 age-matched control subjects were included in this retrospective study. The regional and global peak values of longitudinal and circumferential strain (LSregional, LSglobal, CSregional, CSglobal), and their regional heterogeneities were evaluated using coefficients of variation (LSCoV, CSCoV) in relation to LGE. Receiver operating characteristic curve analysis was performed to identify patients with a total left ventricular myocardial LGE ≥ 15%.
Results
LSglobal in HCM patients was significantly decreased compared to that in controls (− 14.4 ± 2.4% vs − 17.2 ± 2.0%; p = 0.0004), while CSglobal was not (p = 1.0). Negative LGE segments demonstrated decreased LSregional in HCM patients compared to in controls (p < 0.0001), while CSregional was not decreased. CSCoV demonstrated the largest area under the curve (AUC) (0.91), with high sensitivity (83%) and specificity (94%) for detection of HCM patients with extensive LGE, while the AUC of LSCoV was low (0.49).
Conclusion
The heterogeneity in CSregional has a high diagnostic value for detection of HCM patients with extensive LGE.