Donald J Bak

US Patent:

7458118, Dec 2, 2008

Filed:

Apr 26, 2006

Appl. No.:

11/411525

Inventors:

Donald Bak - Streamwood IL, US

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

A61B 6/04

US Classification:

5601, 5611, 378209

Abstract:

A patient bed is provided having an elevation mechanism resting on a platform and a collimator assembly, where the weight of the collimator assembly is selectively supported by one of the combination of the elevation mechanism and the platform when there is no patient laying on a mattress of the patient bed, and the platform alone when there is a patient laying on the mattress of the patient bed. The patient bed further includes first and second docking assemblies respectively mounted to a bed frame and the platform for docking the collimator assembly. The docking assemblies include self-aligning guide pins for maintaining a horizontal position of the collimator assembly and its collimators therein during docking and post-docking.

US Patent:

7600434, Oct 13, 2009

Filed:

Nov 30, 2007

Appl. No.:

11/948307

Inventors:

Donald J. Bak - Streamwood IL, US

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

G01N 3/20

US Classification:

73849

Abstract:

A bed for a medical treatment system. The system has a medical treatment device, such as a CT scanner or radiation therapy system, oriented in a spatial relationship with the bed. The bed has an elevation member, a support member for a patient subject, one section of the support member being mounted on the elevation member and the remaining section of the support member being cantilevered from the elevation member, a mount arranged to the support member, an attachment member arranged at the remaining section of the support member, a deflection member connecting the mount and the attachment member, and a sensor arranged on the deflection member. The sensor is in communication with a deflection calculation apparatus that correlates deflection measured by the sensor with the spatial relationship between the bed and the medical treatment device.

US Patent:

7925361, Apr 12, 2011

Filed:

Sep 10, 2008

Appl. No.:

12/208013

Inventors:

Donald J. Bak - Streamwood IL, US

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

G05B 1/06
G01R 31/02

US Classification:

700 21, 324549, 318663

Abstract:

Circuits for detecting faults in variable resistive position feedback sensors common in the use of motion control systems, provide a filter coupled to an output signal of the variable resistive position sensor for processing the signal to detect noise indicative of intermittent faults. A memory stores occurrences of signals from the filter. The memory can activate an alarm which indicates that a failure is detected. The circuits are particularly applicable to medical imaging systems such as SPECT, PET or MRI systems which contain a multiplicity of moving components that require accurate motion control and positioning.

US Patent:

20060284100, Dec 21, 2006

Filed:

Jun 13, 2006

Appl. No.:

11/452040

Inventors:

Donald Bak - Streamwood IL, US

International Classification:

G01T 1/20

US Classification:

250369000

Abstract:

Correction of scintillation event data from a nuclear medicine imaging system for effects of pulse pile-up is carried out by separating event data packets into total energy and individual detector energy data packets, executing pile-up correction algorithms on each of the separated packets simultaneously using a pipeline processing architecture, and reassembling the corrected data packets into corrected scintillation event data packets. Pulse tail correction information for each individual detector is stored in a storage medium for a present event and immediately preceding event for which correction information exists, which allows individual detector correction information to be retrieved by using a look-up procedure, thereby enabling correction to be performed within a single processor cycle.

US Patent:

20080035850, Feb 14, 2008

Filed:

Aug 14, 2006

Appl. No.:

11/504799

Inventors:

Donald Bak - Streamwood IL, US

International Classification:

G01T 1/166

US Classification:

25036305

Abstract:

A patient on a bed is positioned within an imaging space defined by a view field of a signal detector for collecting imaging signals to be reconstructed into the images by using signal processing. The patient positioning system uses a nuclear detection device having a mechanism for generating nuclear radiation and detecting mechanism for detecting an incident nuclear radiation. The proximity units are comprised of modulated LED light sources emitting a carrier modulated light beam and a photo receiver. An analog/digital converter is used for receiving signals output by the photo receiver while a bandpass filter is used for selectively passing the carrier modulated light beam. A detector determines the presence or absence of the carrier modulated light beam. The absence or presence of the carrier modulated light beam determines the position of the patient.

US Patent:

20090033917, Feb 5, 2009

Filed:

Aug 3, 2007

Appl. No.:

11/833618

Inventors:

Donald J. Bak - Streamwood IL, US
Patanit Sanpitak - Highland Park IL, US

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

G01N 21/00

US Classification:

356 73

Abstract:

Systems and methods for dynamically positioning a detector relative to an object are provided. In one respect, a light source may project a light energy forming at least one projected plane onto a light rail, and more particularly, a light guide embedded in the light rail. The light energy of the projection may be obtained and may be differentially compared to a reference light energy obtained by a photo detector. Based on the differentially comparison, a detector may be positioned, i.e., closer to the object, away from the object, or maintaining the current position.

US Patent:

20120095321, Apr 19, 2012

Filed:

Oct 18, 2010

Appl. No.:

12/906436

Inventors:

Donald J. Bak - Streamwood IL, US

Assignee:

SIEMENS MEDICAL SOLUTIONS USA, INC. - Malvern PA

International Classification:

A61B 5/055
A61B 6/03

US Classification:

600411

Abstract:

A magnetic resonance (MR)-positron emission tomography (PET) device dual modality system includes a dual modality detector system, conductors, and a PET processing device. The dual modality detector system includes a plurality of PET detector device having a framing recovery device and PET detectors, and an MR detector device having a magnetic resonance (MR) receiver. The conductors are electrically connected to the PET detectors. The PET processing device transmits modulated timing and frame synchronization signals to the PET detectors via the conductors and the framing recovery device. The frame synchronization signal is missing one or more framing signals, thereby reducing a spectral radiation of the conductors that causes interference to the MR receiver of the MR detector device. The framing recovery device detects the timing and frame synchronization signals and recovers the one or more missing framing signals.

US Patent:

20160071254, Mar 10, 2016

Filed:

Nov 13, 2015

Appl. No.:

14/941415

Inventors:

- Malvern PA, US
Donald J. Bak - Streamwood IL, US

International Classification:

G06T 5/30
G06T 7/00
G06T 3/40

Abstract:

A system and method includes reception of a color image comprising a plurality of color pixels, conversion of the color image to a monochromatic image comprising a plurality of monochromatic pixels, performance of M erosion operations on the monochromatic image to generate an eroded monochromatic image, where M is equal to or greater than one, performance of N dilation operations on the eroded monochromatic image to generate a mask image, where N is equal to or greater than one, identification of one or more regions of the mask image based on the mask image, and modification of regions of the color image corresponding to the identified regions of the mask image.