Wisconsin Alumni Research Foundation

University Health Network

Harald Keller

Thomas Rockwell Mackie

Catherine Coolens

David Pearson

Kenneth Ruchala

Gustavo H Olivera

Paul J Reckwerdt

Jeffrey M Kapatoes

Robert Jeraj

Bhudatt Paliwal

Michael William Kissick

Tiezhi Zhang

Brandon Driscoll

Sarah Ann Boswell

Ralf Hinderer

Richard C Schmidt

An imaging phantom for contrast imaging calibration. The phantom includes a body defining at least one cavity having a directional configuration corresponding to at least one pre-determined direction of motion of the phantom. The phantom also includes at least one imaging capsule configured to match and be contained in the at least one cavity. The imaging capsule comprises a material having an imaging contrast different from that of the body.

Phantom for contrast imaging calibration

A phantom for simulation of perfusion, for use in dynamic flow imaging. The phantom includes a first compartment having a first inlet and a first outlet, and a second compartment having a second outlet. The first and the second compartments have fluid communication with each other, to simulate perfusion between the first and the second compartments. The first and the second outlets are separately controllable to adjust outflow of fluid from each compartment and to adjust fluid pressure in each compartment, thereby controlling rates of communication of fluids between the first and the second compartments.

Dynamic flow imaging phantom and model therefor

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

Compensation for patient rotation between planning and treatment in a radiation therapy machine is provided by angled translation of a table surface on which the patient is supported without actual patient rotation.

Correction of patient rotation errors in radiotherapy using couch translation

A high efficiency radiation detector employs longitudinally extending converter elements receiving longitudinally propagating radiation to produce high-energetic electrons received by detector structures in interstitial spaces. The secondary electron generation in this architecture allows great freedom in selection of converter materials and thickness. A variety of detector mechanisms may be used including ionization-type detectors or scintillation-type detector.

Radiation detector with converters

Growing community of inventors

Toronto, Canada

Harald Keller