Adenosine stress protocol:
0.14 mg/kg/min adenosine infused over 4 minutes with stress perfusion imaging performed during the last minute of the adenosine infusion using an FGRE-ET sequence and a gadolinium dose of 0.1 mmol/kg. Rest perfusion imaging was performed was then performed after appropriate delay using additional gadolinium dose of 0.1 mmol/kg. Cine white blood imaging including short axis and two, three and four chamber long axis views was performed using a FIESTA sequence to evaluate cardiac morphology and function. Delayed enhanced imaging was performed using an Inversion recovery prepared gradient echo sequence. Images were postprocessed on a computer workstation to assess cardiac anatomy and ventricular function.
Stress perfusion imaging:
Rest perfusion imaging:
Normal cardiac anatomy and normal cardiac chamber size. Normal left ventricular wall motion and function.
Antero-septal wall (end-diastole):
Infero-lateral wall (end-diastole):
Left ventricular diameter measured at the base (end-diastole):
Left ventricular diameter measured at the base (end-systole):
Reference values from: Maceira et al., Normalized left ventricular systolic and diastolic function by steady state free precession cardiovascular magnetic resonance. J Cardiovascular Magn Reson 2006; 8:417-426.