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Accurate determination of left ventricular mass and left ventricular systolic volume and function is important for assessment of prognosis and therapeutic options in patients with hypertensive heart disease, coronary heart disease and congestive heart failure [1, 2]. In patients with hypertension, left ventricular hypertrophy increases the relative risk of mortality by twofold in those patients who also have coronary artery disease and by fourfold in those patients with normal coronary arteries [3]. Because of the low cost, M-mode echocardiography is the most widely used method to determine left ventricular mass [4]. However, there is considerable variability for repeated measurements. Two-dimensional and 3-dimensional echocardiography is more used for determination of left ventricular volumes and left ventricular ejection fraction, with an excellent intra-observer variability but worse inter-observer variability [5]. Additionally, not in all patients high quality images can be obtained, which permit precise assessment of left ventricular volumes and function. Because of its high spatial and temporal resolution, MRI is the best technique for assessment of right and left ventricular function. For determination of left ventricular function one can either use the Simpson’s rule or the area-length method. With the Simpson’s rule left ventricular volumes are calculated by summing the endocardial area within multiple short axis slices from base to apex of the heart and multiplying each area by the slice thickness [6]. Left ventricular volumes and left ventricular mass using this technique have been validated with cast measurements and cadaver studies and show an excellent correlation. Intra- and interobserver variability of the measurements of left ventricular volume, ejection fraction and left ventricular mass are very low [7, 8]. Because of this high

Can left ventricular function parameters be determined within half of the time with MRI?