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Full left ventricular coverage is essential for the accurate quantification of the area-at-risk by T1 and T2 mapping.

Abstract：

:T2-weighted cardiovascular magnetic resonance (CMR) using a 3-slice approach has been shown to accurately quantify the edema-based area-at-risk (AAR) in ST-segment elevation myocardial infarction (STEMI). We aimed to compare the performance of a 3-slice approach to full left ventricular (LV) coverage for the AAR by T1 and T2 mapping and MI size. Forty-eight STEMI patients were prospectively recruited and underwent a CMR at 4 ± 2 days. There was no difference between the AARfull LV and AAR3-slices by T1 (P = 0.054) and T2-mapping (P = 0.092), with good correlations but small biases and wide limits of agreements (T1-mapping: N = 30, R2 = 0.85, bias = 1.7 ± 9.4% LV; T2-mapping: N = 48, R2 = 0.75, bias = 1.7 ± 12.9% LV). There was also no significant difference between MI size3-slices and MI sizefull LV (P = 0.93) with an excellent correlation between the two (R2 0.92) but a small bias of 0.5% and a wide limit of agreement of ±7.7%. Although MSI was similar between the 2 approaches, MSI3-slices performed poorly when MSI was <0.50. Furthermore, using AAR3-slices and MI sizefull LV resulted in 'negative' MSI in 7/48 patients. Full LV coverage T1 and T2 mapping are more accurate than a 3-slice approach for delineating the AAR, especially in those with MSI < 0.50 and we would advocate full LV coverage in future studies.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Bulluck H,Bryant JA,Lim MX,Tan XW,Ramlall M,Francis R,Kotecha T,Cabrera-Fuentes HA,Knight DS,Fontana M,Moon JC,Hausenloy DJ

doi

10.1038/s41598-017-05127-0

subject

Has Abstract

pub_date

2017-07-07 00:00:00

pages

4871

issue

1

issn

2045-2322

pii

10.1038/s41598-017-05127-0

journal_volume

7

pub_type

杂志文章

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