Native T1 heterogeneity for predicting reverse remodeling in patients with non-ischemic dilated cardiomyopathy View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2022-03-23

AUTHORS

Minori Kinoshita, Shingo Kato, Sho Kodama, Mai Azuma, Naoki Nakayama, Kazuki Fukui, Naka Saito, Tae Iwasawa, Kazuo Kimura, Kouichi Tamura, Daisuke Utsunomiya

ABSTRACT

A recent study has shown that the heterogeneity of native T1 mapping may be a new prognostic factor for patients with non-ischemic dilated cardiomyopathy (NIDCM). This study aimed to investigate the predictive value of native T1 heterogeneity of the left ventricular (LV) myocardium, as assessed by pixel-wise histogram analysis, for predicting left ventricular reverse remodeling (LVRR) by medical therapy in patients with NIDCM. A total of one hundred and thirteen NIDCM patients (mean age: 63 ± 12 years; 91 males and 22 females; mean LV ejection fraction (EF): 37 ± 10%) were retrospectively analyzed. T1 mapping images were acquired using a modified look-locker inversion recovery (MOLLI) sequence. We performed histogram analysis of native T1 mapping of LV myocardium, mean (T1-mean) and standard deviation (T1-STD) of native T1 time from each pixel were calculated. Extracellular volume fraction (ECV) was also evaluated. LVRR was defined as LVEF increased ≥ 10% points and decrease in LV end-diastolic volume ≥ 10% at 12 months from initiation of medical therapy. Cutoff value of T1-mean and T1-STD was set as median value of each parameter. Sixty (53%) NIDCM patients reached LVRR. Area under the receiver-operating characteristics curve for predicting LVRR was 0.763 (95% confidence interval (CI) 0.679–0.847) for %LGE, 0.757 (95% CI 0.663–0.850) for T1-mean, 0.724 (95% CI 0.625–0.823) for T1-STD, 0.800 (95% CI 0.717–0.882) for ECV, respectively. Proportion of LVRR was significantly lower in NIDCM patients with high T1-mean and high T1-STD (12%) compared to NIDCM with high T1-mean and low T1-STD (65%) (p < 0.001). Adding T1-STD to T1-mean improved AUC from 0.757 to 0.806, comparable to AUC of ECV. Combination of T1-mean and T1-STD, a parameter of heterogeneity of native T1 of the LV myocardium, may be a useful for prediction of LVRR by medical therapy without use of gadolinium contrast for patients with NIDCM. More... »

PAGES

1541-1550

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00380-022-02057-4

DOI

http://dx.doi.org/10.1007/s00380-022-02057-4

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1146511867

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/35320392


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64 left ventricular reverse remodeling
65 mapping
66 mapping images
67 median value
68 medical therapy
69 months
70 myocardium
71 native T1
72 native T1 mapping
73 native T1 times
74 new prognostic factors
75 parameters
76 parameters of heterogeneity
77 patients
78 pixels
79 point
80 prediction
81 predictive value
82 prognostic factors
83 proportion
84 receiver-operating characteristic curve
85 recovery sequence
86 remodeling
87 reverse remodeling
88 sequence
89 standard deviation
90 study
91 therapy
92 time
93 total
94 use
95 values
96 ventricular myocardium
97 ventricular reverse remodeling
98 volume
99 volume fraction
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