Function, size and morphology of the right cardiac ventricle (RV) are known to be strong influencing factors on morbidity and mortality in various cardiac diseases, for instance congenital heart disease, pulmonary hypertension, myocardial infarction or arrythmogenic right ventricular cardiomyopathy (ARVC) [
1‐
4]. However, their evaluation by using non-invasive imaging techniques is often a challenge, mainly attributable to the asymmetric and highly variable shape of the RV, the predominantly longitudinal systolic shortening, the small myocardial wall thickness and the location behind the sternum. Cardiovascular magnetic resonance (CMR), mainly using steady-state free-precession (SSFP) cine imaging at a field strength of 1.5Tesla (T), has evolved as the gold standard for the assessment of RV dimensions and function due to its ability to image in any plane, its excellent blood-tissue contrast, its capability to depict even small wall motion abnormalities and its proven reproducibility [
4‐
7]. Nevertheless, expectations to characterize the myocardial tissue of the RV comparable to the LV including the differentiation of fibrosis, fat or edema, remained widely unaccomplished yet. As an example, the current task force criteria to assess ARVC include CMR to assess RV size and function, but emphasize that the evidence of fibro-fatty replacement within the RV wall is only obtained by endomyocardial biopsy [
4]. Even the accuracy of CMR to quantify RV mass, which is known to be an important predictor of cardiovascular events, is uncertain due to the challenge of resolving the thin (2-5mm) RV free wall properly using protocols (typical voxel size of cine imaging 1.8x1.8x6mm
3) common in today’s clinical [
8‐
10]. To extend the information that is extractable from CMR, technological improvements that increase the spatial and temporal resolution as well as signal-to-noise ratio (SNR) are therefore desired. As field strength positively correlates with SNR, CMR at ultrahigh fields (7T) offers the potential to depict even microscopic structures and to facilitate targeted tissue characterization [
11,
12]. However, imaging at 7T comes with technical challenges, like increased B
0 heterogeneities, non-uniform B
1 distribution and increased radio frequency (RF) power deposition. Recently, the technical feasibility of cardiac cine imaging at 7T using fast gradient echo (FGRE) techniques has been demonstrated, and data demonstrating the ability for accurate LV chamber quantification at 7T were reported [
13‐
16]. Moreover, dedicated transmit and receive coils as well as cardiac trigger techniques have been developed to meet the demands of CMR at 7T [
17‐
21].
Aim of the present study was to extend the application of cine imaging at 7T to the assessment of RV size and function and to compare the results with the gold standard at 1.5T. This work is regarded as the first step toward a comprehensive assessment of RV function, size and morphology using CMR at 7T.