Real-time RF pulse adjustment forB0 drift correction

Real-time RF pulse adjustment for B0 drift correction.

Although the magnetic field of an MR scanner is very stable under little or no load, it can become less stable under heavy-duty cycle conditions, such as in diffusion tensor imaging (DTI). Uncorrected, such field drifts lead to an apparent image shift along the phase-encoding direction and decreasing effectiveness of fat saturation pulses. A method is presented to adjust the center frequency of...

Real-time Vision-based Lateral Drift Correction

A major drawback in many robotics projects is the dependance on a specific environment and the otherwise uncertain behavior of the hardware. Simple navigation tasks like driving in a straight line can lead to a strong lateral drift over time in an unknown environment. In this paper we propose a fast and simple solution for the lateral drift problem for vision guided robots by real-time scene an...

drift correction technique

sensitivity of an electromagnetic type metal detector is directly related to stability, the higher the required sensitivity, the more frequently the rebalancing controls will have to be adjusted. thus, for maximum sensitivity in the head ,the use of automatic drift compensation network is necessary in order to cancel out the signal resulting from a slow drift in the coil system due to the tempe...

An Automatic Real Time Impedance Matching System for Use in an RF Electrostatics Accelerator Ion Source

Correction: Dynamic Adjustment of Stimuli in Real Time Functional Magnetic Resonance Imaging

The following information is missing from the Funding section: This research was supported in part by Judy Polshek Goodman Alzheimer's Disease Research and Prevention Fund, and a pilot grant from Philips Imaging. The complete, correct funding information is as follows: This research was supported in part by the Spitz Brain Health Innovation Fund, the G.R. Lincoln Family Foundation, Judy Polshek...