James B Murdoch

Title: Innovations of James B Murdoch

Introduction

James B Murdoch is a notable inventor based in Solon, OH (US), recognized for his contributions to the field of magnetic resonance imaging (MRI). He holds a total of 5 patents, showcasing his innovative approach to enhancing MRI technology.

Latest Patents

Among his latest patents is the B1-robust and T1-robust species suppression in MRI. This invention features an MRI multi-echo data acquisition sequence known as REFUSAL, which stands for REFocusing Used to Selectively Attenuate Lipids. The REFUSAL pulse employs a spectrally-selective re-focusing RF pulse that can be either non-spatially selective or spatially-selective. This pulse selectively refocuses water spins while avoiding lipid spins, maximizing water refocusing and minimizing lipid refocusing, all while maintaining robustness against B0-inhomogeneity and B1-inhomogeneity. Following the REFUSAL pulse, the echo train continues conventionally, allowing only those spins refocused by the REFUSAL pulse to evolve coherently and generate echoes.

Another significant patent involves phase rotated spoiling for spatial and spectral saturation techniques. In this invention, magnets create a temporally constant magnetic field through an examination region. Radio frequency coils and a transmitter transmit radio frequency saturation pulses and resonance excitation pulses into the examination region. Gradient amplifiers and coils create magnetic field gradients for spatially focusing saturation and spoiling residual transverse magnetization. The saturation pulse is spectrally focused by limiting its frequency to selected ranges, while spatial focusing is achieved through concurrent application of gradient pulses. A phase shift controller increments the phase of the RF saturation pulse in a preselected manner, enhancing the imaging sequence's effectiveness.

Career Highlights

James B Murdoch has worked with prominent companies in the medical imaging field, including Picker International, Inc. and Technicare Corporation. His experience in these organizations has significantly contributed to his expertise and innovative capabilities in MRI technology.

Collaborations

Throughout his career, Murdoch has collaborated with notable professionals such as Martyn N Paley and David A Lampman. These collaborations have likely enriched his work and led to advancements in the technologies he has developed.

Conclusion

James B Murdoch's contributions to MRI technology through his patents and career experiences highlight his role as an influential inventor in the field