- Poster presentation
- Open Access
Right ventricular T1 mapping is technically feasible and correlates with right ventricular dysfunction in non-ischemic cardiomyopathy
© Jellis et al.; licensee BioMed Central Ltd. 2014
- Published: 16 January 2014
- Right Ventricular
- Right Ventricular Function
- Right Ventricular Dysfunction
- Right Ventricular Ejection Fraction
- Right Ventricular Free Wall
T1 mapping is increasingly employed for evaluation of diffuse fibrosis within the left ventricular (LV) myocardium. Physiological confounders require correction of raw data prior to analysis. T1 values have been inversely correlated with LV systolic and diastolic function. We sought to evaluate the feasibility of right ventricular (RV) T1 mapping and to assess its relationship with RV function.
Post-contrast, T1 mapping was performed with a Look-Locker technique using inversion recovery imaging in 102 consecutive subjects with non-ischemic cardiomyopathy. Regional T1 values of the RV free wall, RV septum and lateral LV were calculated using prototype analysis software. CMR volumetric data was measured offline using a cine short axis stack to establish RV end-diastolic-volume (RVEDV), end-systolic-volume (RVESV) and ejection fraction (RVEF). Simultaneous subject biochemical and anthropometric data were recorded.
Correlation between LV and RV T1 values
(mean T1 value)
RV free wall T1 value
(350 ± 66 ms)
RV septal T1 value
(359 ± 74 ms)
Lateral LV T1 value (384 ± 78 ms)
Right ventricular T1 mapping appears technically feasible with good agreement between regional RV and LV T1 values. RV T1 values appear proportionally related to RV ejection fraction, suggestive that RV dysfunction in this population may be mediated by fibrotic factors.
No funding disclosures.
This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.