Wisconsin Alumni Research Foundation

Standard Imaging, Inc.

Bhudatt Paliwal

Robert Jeraj

Tiezhi Zhang

Wolfgang A Tome

Harald Keller

Myles L Sommerfeldt

John Roy Gentry

Raymond Terry Riddle

Paulina E Galavis

James Holden

Ke Sheng

Christopher J Kubiak

Venkata Veerendranadh Chebrolu

Keith R Nelson

Yue Yan

Richard A Steeves

A system for radiation therapy includes an ionizing radiation source for producing a beam oriented along an axis aligned with a target volume for delivering ionizing radiation to the target volume along a beam path and at a dose rate, wherein the beam includes a soft spectrum and a hard spectrum. The system also includes a filter arranged within the beam path and including a central aperture that is free of beam-filtering material, wherein the central aperture is surrounded by a beam-filtering material having a thickness dimension selected and positioned in the beam path to highly attenuate the soft spectrum of the beam to reduces external scatter of the beam and allow a majority of the hard spectrum of the beam to pass through the central aperture unfiltered. The beam path is free of beam-filtering material arranged to attenuate a central portion of the beam.

System and method for control of external beam radiation

A system and method for analyzing medical images of a subject includes acquiring the medical images of the subject and texture images. A computer system determines, using the medical images and the texture feature images, a plurality of segmentation surfaces by iteratively adjusting a relationship between a region growing algorithm that selects a region of interest (ROI) to determine a given segmentation surface and cost function for evaluating the given segmentation surface. The computer system generates a report using the plurality of segmentation surfaces indicating at least boundaries between anatomical structures with functional differences in the medical images.

System and method for gradient assisted non-connected automatic region (GANAR) analysis

A system for automatic segmentation of tumor tissue, useful for motion correction during radiotherapy using real-time imaging, identifies multiple regions based on the values of data and then identifies the tumors within the regions based on a priori knowledge about tumor size and/or location. The regions may be refined with robust and fast morphological operations, providing segmentation at speeds commensurate with the motion to be corrected.

High-speed tumor segmentation system

Radiation treatment of the lung or surrounding tissue during continuous breathing is made possible by preparing a treatment plan linked to motion phase and then synchronizing the plan to motion phase as the patient follows a regular breathing schedule.

Apparatus and method using synchronized breathing to treat tissue subject to respiratory motion

A computed tomography machine () provides for improved dose efficiency by calculating an optimized set of beam intensities to produce the desired image quality. Determination of the beam weights is based on an a priori modeling () of the properties of the patient being imaged.

Method and apparatus for low dose computed tomography

An improved non-invasive respiration monitor combines signals from a spirometer and laser chest displacement sensor to reduce signal error. The improved respirations signal can be used for position correction in radiation therapy and imaging applications and can be displayed to a user in breath control techniques.

Combined laser spirometer motion tracking system for radiotherapy

A stand-alone calculator enables multi energy electron beam treatments with standard single beam electron beam radiotherapy equipment thereby providing improved dose profiles. By employing user defined depth-dose profiles, the calculator may work with a wide variety of existing standard electron beam radiotherapy systems.

Treatment planning tool for multi-energy electron beam radiotherapy

A volume phantom for radiation therapy verification employs film held in a spiral configuration within a equalizing ring of attenuating material. The ring provides improved uniformity in radiation measurement and may be extended, for example, to a hemisphere to provide improved modeling and simulation of treatments in the region of the head.

Growing community of inventors

Madison, WI, United States of America

Bhudatt Paliwal