Wisconsin Alumni Research Foundation

Technology

Reducing Image Noise and X-ray Dose in Spectral CT

With the advance of photon counting technology, spectral CT (multi-energy CT) has attracted lots of attention. The technique utilizes X-ray spectral information to identify and differentiate materials...
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Charles Mistretta, Cynthia McCollough, Shuai Leng, Lifeng Yu, Joel Fletcher | P100364US02

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 (dig...
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Charles Mistretta | P110289US01

Technology

Statistical Noise Map for Reducing X-Ray Exposure

Iterative image reconstruction techniques can be used to produce high quality tomographic images from noise-contaminated data. It is known that a statistical weight is critical for great image quality...
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Guang-Hong Chen, Jie Tang | P130056US01

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

Rapid Three-Dimensional Elasticity Imaging

Elastography is a type of imaging technique that reveals the stiffness of tissues. It commonly is used to detect tumors and other abnormalities that cause changes in local tissue stiffness. Measuremen...
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Tomy Varghese, Atul Ingle | P130117US01

Technology

Cervical Probe Predicts Preterm Delivery Risk

Preterm birth affects 13 million babies every year, resulting in infant deaths, disabilities and medical conditions costing $26 billion annually in the U.S. alone. Preterm birth rates have increased i...
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Timothy Hall, Lisa Reusch, Helen Feltovich | P130172US01

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

Technology

Accelerated MRI Scanning Using Spectral Sensitivity

Magnetic resonance imaging (MRI) of metallic implants can be challenging because metal and surrounding tissue impact the main magnetic field differently. Such magnetic field inhomogeneities cause off-...
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Scott Reeder, Matthew Smith, Nathan Artz | P120310US01

Technology

Correcting for Patient Motion with T1-Weighted PROPELLER MRI

A leading method for reducing motion blurring in medical imaging is called PROPELLER (Periodically Rotated Overlapping ParallEL Lines with Enhanced Reconstruction). It allows doctors to track and help...
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Howard Rowley, Jean Brittain, James Holmes, Reed Busse, Ajeetkumar Gaddipati, Philip Beatty, Xiaoli Zhao, Zhiqiang Li | P110244US02

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