Kenneth Jerome Freeman

US Patent:

6364526, Apr 2, 2002

Filed:

Jan 10, 2000

Appl. No.:

09/480514

Inventors:

Andrew J. Ivan - Reminderville OH
Leonard F. Plut - Mentor OH
Joseph S. Deucher - Lyndhurst OH
Pieter Gerhard Roos - Bainbridge OH
Kenneth L. Freeman - Stow OH
Marc Piscitelli - Richmond Heights OH
Dennis K. Everett - Seven Hills OH

Assignee:

Philips Medical Systems (Cleveland) Inc. - Highland Heights OH

International Classification:

H05G 164

US Classification:

378198, 378 988

Abstract:

A frame (A) of a diagnostic imaging device such as a CT scanner or an MRI device has a bore defining a patient examination region ( ). A first x-ray source (B) is mounted to a frame (C) for rotation around the examination region ( ). An arc of first radiation detectors ( ) detects x-rays which have traversed the examination region. A first image reconstruction processor ( ) reconstructs a tomographic image representation from signals generated by the first radiation detectors. A fluoroscopy device (D) is mechanically coupled to the diagnostic scanner for generating and displaying at least substantially real-time fluoroscopic projection image representations on a display monitor ( ). A second x-ray source ( ) transmits x-rays to an amorphous silicon flat panel radiation detector ( ). A second image reconstruction processor ( ) reconstructs the fluoroscopic projection image representations from signals generated by the flat panel radiation detector ( ). A C-arm ( ) supports the second x-ray source ( ) and the flat panel radiation detector ( ) in a plane offset from a plane of the C-arm.

US Patent:

6366796, Apr 2, 2002

Filed:

Oct 22, 1999

Appl. No.:

09/426929

Inventors:

Jeffrey M. Yanof - Solon OH
Kenneth L. Freeman - Stow OH
Barry L. Werner - Chesterbrook PA

Assignee:

Philips Medical Systems (Cleveland), Inc. - Highland Heights OH

International Classification:

A61B 505

US Classification:

600407, 600410, 600411, 600425, 600427, 600437, 600439, 378 21

Abstract:

A tomographic scanner includes an imaging device for obtaining images of the anatomy of a patient. A localizer device such as an articulated arm includes a base portion mounted in a fixed relationship to the imaging device and a free end adapted for selective movement into varied positions near a patient body disposed on the imaging device. A guide device such as grid lattice is attached to the free end of the arm. A position transducer associated with the localizer device generates information as to the position of the localizer and hence the position of the guide device in scanner coordinates. The guide device contains a plurality of needle guides. The position of the guide device is displayed in relation to images of the anatomy of the patient. This information is used by the operator to guide the insertion of brachytherapy seeds in a desired pattern and location in relation to the anatomy of the patient.

US Patent:

61495921, Nov 21, 2000

Filed:

Nov 26, 1997

Appl. No.:

8/980171

Inventors:

Jeffrey H. Yanof - Solon OH
Pieter Gerhard Roos - Bainbridge OH
Kenneth L. Freeman - Stow OH
Joseph S. Deucher - Lyndhurst OH
Andrew J. Ivan - Reminderville OH
Dominic J. Heuscher - Aurora OH

Assignee:

Picker International, Inc. - Highland Heights OH

International Classification:

A61B 500

US Classification:

600427

Abstract:

A patient supported on a patient support (12) is moved into a bore (22) of a planning imaging device, such as a CT scanner (20). A three-dimensional diagnostic image in three-dimensional diagnostic image space is generated and stored in a memory (130). The patient is repositioned outside of the bore with a region of interest in alignment with a real time imaging device, such as a fluoroscopic imaging device (40). A surgical planning instrument (60), such as a pointer or biopsy needle (62), is mounted on an articulated arm (64). As the instrument is inserted into the region of interest, fluoroscopic images are generated and stored in a memory (140). The coordinate systems of the CT scanner, the fluoroscopic device, and the surgical instrument are correlated (102, 104, 112, 120) such that the instrument is displayed on both the CT images (134) and the fluoroscopic images (50), such that cursors move concurrently along the fluoroscopic and CT images, and the like. In a preferred embodiment in which the cursor on the CT image display is at an intersection of transverse, sagittal, and coronal planes, the displayed planes change as the cursor moves coordinating the displayed CT image planes with the position of the cursor on the fluoroscopic image.

US Patent:

59600543, Sep 28, 1999

Filed:

Nov 26, 1997

Appl. No.:

8/978901

Inventors:

Kenneth L. Freeman - Stow OH
John J. Barni - Mayfield Village OH
David W. Hoffmeyer - Concord OH
Donald E. Negrelli - Gates Mills OH
Kim S. Luckner - Mentor OH
Joseph S. Deucher - Lyndhurst OH

Assignee:

Picker International, Inc. - Highland Heights OH

International Classification:

H05G 160

US Classification:

378 4

Abstract:

A gantry (A) has a bore defining a first patient examination region (12). A first x-ray source (B) is mounted to a frame (C) for rotation around the examination region (12). An arc of first radiation detectors (14) detects x-rays which have traversed the examination region. A first image reconstruction processor (18) reconstructs a tomographic image representation from signals generated by the first radiation detectors. An angiographic device (D) is positioned remote from the gantry along a longitudinal axis (25) for generating and displaying angiographic image representations on a display monitor (46). A second examination region is defined along the longitudinal axis (25) between a second x-ray source (36) and an image intensifier tube (38). A second processor (44) reconstructs the angiographic projection image representations from signals generated by the image intensifier tube (38). A C-arm (30) can be suspended from an overhead track (50) for supporting the second x-ray source (36) and the image intensifier tube (38).

US Patent:

60318880, Feb 29, 2000

Filed:

Nov 26, 1997

Appl. No.:

8/979571

Inventors:

Andrew J. Ivan - Reminderville OH
Leonard F. Plut - Mentor OH
Joseph S. Deucher - Lyndhurst OH
Pieter Gerhard Roos - Bainbridge OH
Kenneth L. Freeman - Stow OH
Marc Piscitelli - Richmond Heights OH
Dennis K. Everett - Seven Hills OH

Assignee:

Picker International, Inc. - Highland Heights OH

International Classification:

G01N 2300

US Classification:

378 20

Abstract:

A frame (A) of a diagnostic imaging device such as a CT scanner or an MRI device has a bore defining a patient examination region (12). A first x-ray source (B) is mounted to a frame (C) for rotation around the examination region (12). An arc of first radiation detectors (14) detects x-rays which have traversed the examination region. A first image reconstruction processor (18) reconstructs a tomographic image representation from signals generated by the first radiation detectors. A fluoroscopy device (D) is mechanically coupled to the diagnostic scanner for generating and displaying at least substantially real-time fluoroscopic projection image representations on a display monitor (60). A second x-ray source (32) transmits x-rays to an amorphous silicon flat panel radiation detector (36). A second image reconstruction processor (58) reconstructs the fluoroscopic projection image representations from signals generated by the flat panel radiation detector (36).

US Patent:

20140133636, May 15, 2014

Filed:

Jul 27, 2012

Appl. No.:

13/985179

Inventors:

Kenneth L. Freeman - Stow OH, US
Stephen P. Dechant - Lodi WI, US

Assignee:

Gammex, Inc. - Middleton WI

International Classification:

A61B 6/00

US Classification:

378207

Abstract:

A computed tomography perfusion phantom includes a scanned plane configured to align with an imaging plane of a CT device. A sample rod extends through the scan plane and includes a plurality of adjacent cells. The plurality of adjacent cells are each constructed of materials having predetermined CT numbers and the plurality of adjacent cells include cell of a plurality of CT numbers. A drive motor is coupled to the sample rod and the drive motor moves the sample rod through the scan plane. A method of calibrating a CT device with the perfusion phantom includes aligning the scan plane of the perfusion phantom with an imaging plane of the CT device. The drive motor moves the sample rod through the scan plane of the perfusion phantom. A plurality of CT number measurements of the sample rod are acquired through the scanned plane of the perfusion phantom.