To explore the feasibility of multi-shot gradient-echo planar imaging (MSG-EPI) sequence in non-enhanced coronary artery magnetic resonance angiography (CMRA). Methods: Patients undergoing CMRA in the ...

Finally, four insulated-gate bipolar transistors, controlled by a series of PWM pulse sequences, generated the desired pulse-current duration and direction in the H-bridge circuit. The duration and ...

Abstract: Design criteria are given for low-noise, wideband front-end electronics suitable for pulse-echo operation of capacitive micromachined ultrasonic transducers (CMUTs). To investigate which ...