Radial long axis SSFP cine MRI accurately measured left ventricular volumes, correlating well with short axis TGE and SSFP volumes (r > 0.98) with excellent interobserver agreement (variability < 2.3%).
Observational
Does radial long axis SSFP cine MRI accurately measure left ventricular volumes and mass compared to short axis sequences?
Radial long axis SSFP cine MRI is a fast, accurate method for obtaining left ventricular volumetric data with excellent interobserver agreement and correlation with short axis sequences.
Effect estimate: r > 0.98
In this study we assessed the use of a steady state free precession (SSFP) cine sequence in a series of radially orientated long axis slices for the measurement of left ventricular volumes and mass. We validated the radial long axis approach in phantoms and ex vivo porcine hearts and applied it to normal volunteers and patients using the SSFP and turbo gradient-echo (TGE) sequences. High quality images were obtained for analysis, and the measured volumes with radial long axis SSFP sequence correlated well with short axis TGE and SSFP volumes (r > 0.98). The best interobserver agreement for left ventricular volumes was obtained using SSFP in the long axis radial orientation (variability < 2.3%). We conclude that this combination of sequence and scan orientation has intrinsic advantages for image analysis due to the improved contrast and the avoidance of errors associated with the basal slice in the short axis orientation.
Bloomer et al. (Tue,) conducted a observational in Left ventricular volume and mass measurement. Steady state free precession (SSFP) cine sequence in radial long axis orientation vs. Short axis turbo gradient-echo (TGE) and SSFP sequences was evaluated on Correlation of measured left ventricular volumes and interobserver agreement (r > 0.98). Radial long axis SSFP cine MRI accurately measured left ventricular volumes, correlating well with short axis TGE and SSFP volumes (r > 0.98) with excellent interobserver agreement (variability < 2.3%).