“
“Purpose To investigate the accuracy and noise performance of fat quantification with

multiple gradient-echo images acquired using bipolar read-out gradients and compare them with those of the well-established unipolar technique.\n\nTheoryThe bipolar read-out technique induces phase and amplitude errors caused by gradient delays, eddy currents, and frequency-dependent coil sensitivity. In this study, these errors were corrected for jointly with the fat/water separation by modeling the impact of these effects on the signal. This approach did not require acquisition of reference data or modification of the pulse sequence.\n\nMethodsSimulations and a phantom experiment were used to investigate the accuracy and noise performance of the technique A-1331852 price and compare them with those of a well-established technique using unipolar read-out gradients. Also, the in vivo feasibility was demonstrated for abdominal applications.\n\nResultsThe phantom experiment demonstrated similar accuracy of the bipolar and unipolar fat quantification techniques. In addition, the noise performance was shown not to be affected by the added estimations of the phase and amplitude errors for most inter-echo times.\n\nConclusionThe bipolar technique

was found to provide accurate fat quantification with noise performance similar to the unipolar technique given an appropriate choice of inter-echo time. Magn Reson Med 71:219-229, HDAC inhibitor 2014. (c) 2013 Wiley Periodicals, Inc.”
“To determine muscle adaptations to retraining after short-term detraining, we examined MRT67307 the effects of continuous and interrupted resistance training on muscle size and strength in previously untrained men. Fifteen young men were divided

into continuous training (CTr) or retraining (RTr) groups and performed high-intensity bench press training. The CTr group trained continuously for 15 weeks, while the RTr group trained for 6 weeks, stopped for a 3-week detraining period and resumed training at week 10. After the initial training phase, increases (P<0.01) in one repetition maximum (1-RM) and magnetic resonance imaging-measured triceps brachii and pectorals major muscle cross-sectional areas (CSAs) were similar in both groups. Muscle CSA and 1-RM increased (P<0.05) continuously for the CTr group, but the muscle adaptations were lower (P<0.05) after the last 6-week training period than after the initial phase. In the RTr group, there were no significant decreases in muscle CSA and 1-RM after the 3-week detraining period, and increases in muscle CSA after retraining were similar to those observed after initial training. Ultimately, improvements in 1-RM and muscle CSA in both groups were similar after the 15-week training period. Our results suggest that compared with continuous 15-week training, 3-week detraining does not inhibit muscle adaptations.”
“Objective.