David M Parish

Title: The Innovative Contributions of David M Parish

Introduction

David M Parish is a notable inventor based in Palo Alto, California, recognized for his significant contributions to the field of magnetic resonance imaging (MRI). With a total of four patents to his name, Parish has made advancements that enhance the capabilities of MRI technology, particularly in medical applications.

Latest Patents

One of his latest patents is a magnetic resonance imaging method that imposes void planes on tissue to be imaged. This method creates a grid pattern of lines that, when imaged, produces a reference void in the image. This innovation is particularly beneficial in cardiac studies, allowing for the measurement of heart contraction and relaxation. Additionally, it proves useful for radiation therapy port planning in static tissue. The grid reference is achieved through the use of an RF pulse combined with a slice select gradient, ensuring a significant spin echo signal difference between the grid areas and the surrounding tissue.

Another notable patent is the magnetic resonance imaging apparatus with quadrature radio. This apparatus features quadrature coils constructed from foil bands of conductive material, arranged at angles to provide quadrature phase signals. The design includes trapezoidal cutouts in each loop to accommodate the entry of a human head or other large specimens. Adjustments to the angle between the coils compensate for these cutouts, maintaining the necessary quadrature phase signals. Inductive coupling between the coils is minimized through the use of three rectangular trim foils, which are aligned parallel to the main magnetic field.

Career Highlights

Throughout his career, David M Parish has worked with esteemed organizations such as Resonex, Inc. and The Johns Hopkins University. His work in these institutions has allowed him to collaborate on various projects that push the boundaries of MRI technology.

Collaborations

Parish has collaborated with notable colleagues, including Gregory L Kirk and Jeffrey D Mewborne, contributing to the advancement of innovative imaging techniques.

Conclusion

David M Parish's contributions to the field of magnetic resonance imaging exemplify the impact of innovation in medical technology. His patents not only enhance imaging capabilities but also improve patient care through more accurate diagnostics.