Lars Wigstrom

Title: Innovations in CT Imaging by Lars Wigstrom

Introduction

Lars Wigstrom is an accomplished inventor based in Palo Alto, CA. He has made significant contributions to the field of computed tomography (CT) imaging. His innovative approach focuses on enhancing image quality while reducing x-ray exposure.

Latest Patents

Wigstrom holds a patent for "Adaptive anisotropic filtering of projection data for computed tomography." This patent describes a method for adaptively filtering x-ray attenuation data prior to image reconstruction. The technique involves filtering detected x-ray projection data based on the locally estimated orientation of structures within the projection data. This process occurs at multiple rotation positions, allowing for improved image quality.

Career Highlights

Wigstrom's work has led to advancements in CT imaging technology. His patented method allows for uniform low pass filtering to preserve local mean values while controlling high pass filtering based on estimated orientations. The resulting filtered data provide projection data that smooths along structures while maintaining sharpness along edges. This innovation effectively reduces image noise and streak artifacts without increasing blurring in reconstructed images.

Collaborations

Wigstrom collaborates with Rebecca Fahrig, a fellow researcher at Leland Stanford Junior University. Their partnership has contributed to the development of advanced imaging techniques that enhance patient safety and diagnostic accuracy.

Conclusion

Lars Wigstrom's innovative work in CT imaging exemplifies the importance of advancements in medical technology. His contributions not only improve image quality but also prioritize patient safety by reducing x-ray exposure.