Wisconsin Alumni Research Foundation

Technology

Improved Phantom for Iron and Fat Quantification MRI

The ability to quantify fat concentration in the body has become increasingly important given the rise in obesity and related comorbidities. Likewise, the ability to quantify iron concentration is imp...
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Scott Reeder, Diego Hernando Arribas, Samir Sharma | P150328US01

Technology

Controlling Motion Effects in MRI

Magnetic resonance imaging (MRI) is sensitive to patient movements due to the long scan times sometimes required. A major source of motion is breathing, which causes artifacts to appear in MR images. ...
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Kevin Johnson | P150149US01

Technology

Faster, Higher Quality Medical Imaging

Magnetic resonance imaging (MRI) and computed tomography (CT) have become invaluable tools for learning about a patient’s health. However, systems are limited by acquisition speed, which often leads...
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Alexey Samsonov, Julia Velikina | P150024US01

Technology

Faster, Distortion-Free MRI Near Metallic Implants

Surgical replacement of joints with mechanical prostheses is on the rise. Unfortunately, complications such as infection and loosening are common and often diagnosed in the late stages, compelling rep...
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Nathan Artz, Curtis Wiens | P150006US01

Technology

Semi-Automated Segmentation Improves Knee MRI

Magnetic resonance imaging (MRI) provides high-resolution visualization of soft tissues, allowing diseases to be diagnosed and tracked. In particular, MR images can be used to assess joint degeneratio...
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Kwang Won Choi, Chihwa Song, Richard Kijowski, Darryl Thelen | P140270US01

Technology

Clearer MRI Near Metallic Implants

More than a million joint replacements were performed in the Unites States in 2012 and more than four million implant surgeries are expected in 2030. Such implants pose a challenge to magnetic resonan...
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Scott Reeder, Nathan Artz, Matthew Smith | P140004US01

Technology

Point Sets for Higher-Quality MRI

The problem of constructing a set of points uniformly distributed across the surface of a sphere dates to the early 20th century. The problem is of great importance to modern biomedical imaging and ma...
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Cheng Koay | P120355US01

Technology

Ultra-High Frame Rate, Time-Resolved, 4-D MRA

Since the introduction of angiography, there have been many attempts to develop techniques that provide diagnostic images of the vasculature while reducing invasiveness. A technique called 4-D DSA (d...
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Charles Mistretta | P110289US01

Technology

Evaluating Systemic Cancers

Assessing treatment response in cancer patients is essential to manage their disease and evaluate therapy. Computed tomography (CT) is widely used to monitor cancer treatment by measuring changes in t...
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Robert Jeraj, Glenn Liu | P120188US01

Technology

Confidence Maps for MRI Parametric Mapping

Magnetic resonance parametric mapping is a general framework for measuring important biomarkers. In the process, several images from the same field of view are obtained using different acquisition par...
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Scott Reeder, Diego Hernando Arribas | P120292US01

Technology

Single-Shot Vascular MR Imaging Without Contrast Agent

Acquiring diagnostic images of a patient’s vasculature can be difficult and time consuming. Some magnetic resonance imaging (MRI) techniques employ contrast-enhancing agents, such as gadolinium, tha...
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Frank Korosec, James Holmes, Mahdi Rahimi, Daniel Litwiller | P130045US01

Technology

Detecting Iron Overload with MRI

Iron is an essential nutrient for the human body but is toxic in excess. Iron overload is a particular hazard to patients requiring regular blood transfusions. Treatment for patients with iron overloa...
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Scott Reeder, Diego Hernando Arribas | P120356US01

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