In a majority of the commercially available processors on the market today there is no
hardware support for floating-point arithmetic due to the cost the extra silicon imposes on a …

BACKGROUND AND PURPOSE: 4D-DSA provides time-resolved 3D-DSA volumes with high
temporal and spatial resolutions. The purpose of this study is to investigate a shifted least …

The coronavirus disease 2019 (COVID-19) pandemic caused by the severe acute respiratory
syndrome coronavirus-2 (SARS-CoV-2) has infected millions and killed more than 1.7 …

Background and purpose Safe and effective use of newly developed devices for aneurysm
treatment requires the ability to make accurate measurements in the angiographic suite. Our …

This study investigates a method of time resolved 3D (4D) x-ray imaging of contrast dynamics
internal to a vascular structure (eg intracranial aneurysm) to enable evaluation of blood …

… Oberstar received his bachelor’s degree in electrical engineering from the University of
Wisconsin–Platteville and his MS degree in electrical engineering (signal processing and …

Catheter-based vascular interventions performed in the interventional radiology suite rely
heavily on digital subtraction angiography (DSA) for intraprocedural evaluation of vessel …

A conventional 3D/4D digital subtraction angiogram (DSA) requires two rotational acquisitions
(mask and fill) to compute the log-subtracted projections that are used to reconstruct a 3D/…

The purpose of this project was to investigate the issues relating to the implementation of a
digital filter on a low cost microcontroller platform rather than an expensive and special …

… I also dedicate this work to my parents, father Robert Oberstar, step mother Linda Oberstar,
and mother Gloria Toivola who instilled in me an enduring passion for lifelong learning and …