Robert F Zahn

US Patent:

20080312526, Dec 18, 2008

Filed:

Aug 21, 2008

Appl. No.:

12/195637

Inventors:

Daniel GAGNON - Twinsburg OH, US
Michael A. MORICH - Mentor OH, US
Douglas M. BLAKELEY - Kirtland OH, US
Robert L. ZAHN - Chagrin Falls OH, US
Kevin M. NIEMAN - Avon OH, US

Assignee:

KONINKLIJKE PHILIPS ELECTRONICS N. V. - Eindhoven

International Classification:

A61B 5/055

US Classification:

600411

Abstract:

A hybrid imaging system includes a magnetic resonance scanner and a second modality imaging system disposed in the same radio frequency isolation space. The second modality imaging system includes radiation detectors configured to detect at least one of high energy particles and high energy photons. In some embodiments a retractable radio frequency screen is selectively extendible into a gap between the magnetic resonance scanner and the second modality imaging system. In some embodiments shim coils are disposed with the magnetic resonance scanner and are configured to compensate for distortion of the static magnetic field of the magnetic resonance scanner produced by proximity of the second modality imaging system.

US Patent:

51386429, Aug 11, 1992

Filed:

Jan 29, 1990

Appl. No.:

7/471856

Inventors:

William K. McCroskey - Solon OH
David S. Vickers - Macedonia OH
Roland W. Carlson - Cleveland OH
Robert L. Zahn - Bainbridge OH
Jack A. Drobny - Seven Hills OH

Assignee:

Innovative Imaging Systems, Inc. - Cleveland OH

International Classification:

A61B 600

US Classification:

378 19

Abstract:

A detector arrangement is disclosed for an industrial CT x-ray system which uses a three dimensional cone beam to irradiate the specimen and a large two dimensional scintillation screen to develop a light image corresponding to the energy of the attenuated radiation beams. The light image is focused by a special lens arrangement with zoom capability onto the photocathode of an intensifier. The intensified light image developed is transmitted by fiberoptics to a plurality of CCD chips, each chip developing electrical signals corresponding to a segment of the image developed in the intensifier. The chips are clocked in a predetermined manner based on a prior information developed in an initial scan to produce a high resolution image of large industrial objects in a short time.

US Patent:

57420564, Apr 21, 1998

Filed:

Nov 21, 1996

Appl. No.:

8/752559

Inventors:

Frank C. Valentino - Solon OH
Robert Zahn - Chagrin Falls OH
Frank P. DiFilippo - Mayfield Heights OH

Assignee:

Picker International, Inc. - Cleveland OH

International Classification:

G01T 1164

US Classification:

25036303

Abstract:

This invention addresses the practical implementation of PET imaging capability on a conventional gamma camera. The primary subject of this invention is the addition of a real time processor to perform the rebinning calculations and other on-the-fly calculations and procedures to make PET imaging on a gamma camera more practical. The rebinning or transformation operation described above is performed on-the-fly as each event pair is detected with an event throughput rate sufficient for clinical applications. This transformation process is performed by a chain of digital signal processing subsystems (or similar real time processors), with the resultant transformed data stored in a memory subsystem until a sufficient number of events have been received to produce an image of acceptable quality.

US Patent:

59693584, Oct 19, 1999

Filed:

Nov 24, 1997

Appl. No.:

8/977231

Inventors:

Frank P. DiFilippo - University Heights OH
Mark H. Heller - Garfield Heights OH
Robert L. Zahn - Chagrin Falls OH

Assignee:

Picker International, Inc. - Highland Heights OH

International Classification:

G01T 1166
G01T 1169

US Classification:

25036303

Abstract:

An imaging apparatus includes a pair radiation sensitive detector heads disposed on opposite sides of the patient. The detectors and patient are moved relative to each other in an axial direction while the relative angular orientation of the detectors and the patient is held constant. Positron annihilation events occurring within the anatomy of a patient are detected and used to reconstruct an image. According to one reconstruction technique, a focal plane method is used. The intersections of the lines of coincidence and a plurality of image planes is determined, and a series of images indicative of the intersections is generated.

US Patent:

20230026441, Jan 26, 2023

Filed:

Jul 23, 2021

Appl. No.:

17/383740

Inventors:

- Sunnyvale CA, US
Robert Zahn - Chagrin Falls OH, US
Daniel Gagnon - Twinsburg OH, US
Amit Jain - Solon OH, US
Zhicong Yu - Highland Hts. OH, US
Georgios Prekas - Solon OH, US

International Classification:

G06T 11/00
A61B 6/00
A61B 6/03
A61B 6/02

Abstract:

Disclosed herein is an imaging system including a first x-ray source configured to produce first x-ray photons in a first energy range suitable for imaging, project the first x-ray photons onto an area designated for imaging, a rotatable gantry configured to rotate the first x-ray source such that the first x-ray source traverses an angular path, and a data processor having an analytical portion. The analytical portion is configured to collect first data relating to the transmission of the first x-ray photons through the area designated for imaging at a set of image-collection angles along the angular path, collect background data at a set of background-collection angles along the angular path, wherein the system acquires more than one image of the designated area for imaging between background angles. The analytical portion is also configured to remove errors in the first data using the background data, and generate a corrected image based on the removal of errors in the first data.

Address:

10 Floyd Ct, Palm Coast, FL 32137

Phone:

(386)9863589

VIN:

4A3AL25F77E050554

Make:

MITSUBISHI

Model:

ECLIPSE SPYDER

Year:

2007