MICHAEL J VAN VEGHEL, ATC
Athletic Trainer at Eagan Rd, Madison, WI

License number

Wisconsin 378-039

Professional information

Controlled Optimization Of Relative Exposure Levels In Dual Energy Dsa

US Patent:

5170421, Dec 8, 1992

Filed:

Nov 29, 1991

Appl. No.:

7/800500

Inventors:

Michael S. Van Lysel - Madison WI

Assignee:

Wisconsin Alumni Research Foundation - Madison WI

International Classification:

H05G 164

US Classification:

378 99

Abstract:

A method for obtaining high quality images in dual energy digital subtraction angiography (DSA) with reduced signal to noise ratio (SNR) while simultaneously reducing patient X-ray exposure utilizes a larger aperture for the low-energy beam to obtain a lower patient exposure and a smaller aperture for the high-energy X-ray beam to obtain a decrease in image noise.

Method And Apparatus For Measuring Blood Iodine Concentration

US Patent:

5361761, Nov 8, 1994

Filed:

Jun 17, 1992

Appl. No.:

7/900143

Inventors:

Michael S. Van Lysel - Madison WI
Thomas P. Fuerst - Madison WI

Assignee:

Wisconsin Alumni Research Foundation - Madison WI

International Classification:

A61B 514, A61B 600, G01N 2306

US Classification:

1286531

Abstract:

A method and apparatus for measuring blood iodine concentration draws a continuous specimen of blood containing iodine from the left ventricle of the heart and exposes that specimen to a source of X-rays. The attentuated level of X-rays passing through the specimen is compared with the unobstructed level of X-rays to determine the concentration of iodine in the blood. The measurement is then corrected to account for the effects of dispersion caused by the travel of the specimen from the heart to the measurement zone.