Patents by Inventor Hassan Mostafavi

Hassan Mostafavi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7769430
    Abstract: A method of prompting a patient includes informing a patient a relationship between a result of an activity being performed by the patient and a first target result to be achieved by the activity. A method of prompting a patient includes informing a patient a relationship between a time and a target result to be achieved by an activity. A method of prompting a patient includes informing a patient a relationship between a position of a portion of the patient and a first target position for the portion.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: August 3, 2010
    Assignee: Varian Medical Systems, Inc.
    Inventor: Hassan Mostafavi
  • Publication number: 20100183118
    Abstract: One embodiment of the present disclosure sets forth a method for determining a movement of a target region using tomosynthesis. The method includes the steps of accessing a first set of projection radiographs of the target region over a first processing window defined by a first range of projection angles, accessing a second set of projection radiographs of the target region over a second processing window defined by a second range of projection angels, wherein the first processing window slides to the second processing window during treatment of the target region, and comparing a first positional information derived from the first set of the projection radiographs and a second positional information derived from the second set of the projection radiographs with the first positional information to determine the movement of the target region.
    Type: Application
    Filed: January 16, 2009
    Publication date: July 22, 2010
    Applicant: VARIAN MEDICAL SYSTEMS, INC.
    Inventors: JOSH STAR-LACK, HASSAN MOSTAFAVI
  • Patent number: 7756244
    Abstract: A system for determining a position of an object includes a block having a base, and a plurality of elongate members secured to the block. A system for determining a position of an object includes a processor configured to obtain an image of portions of respective elongated members, and determine a position of an object that is coupled to the plurality of elongated members. A method of determining a position of an object includes obtaining a first image of portions of respective elongated members, and determining a first position of an object using the first image.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: July 13, 2010
    Assignee: Varian Medical Systems, Inc.
    Inventor: Hassan Mostafavi
  • Publication number: 20100158198
    Abstract: An apparatus for prompting a patient includes a structure configured to be mounted to a patient support, a screen coupled to the structure, and a projector located at a distance away from the screen. A method of prompting a patient that is being supported on a patient support includes adjusting a position of a screen relative to a projector, the screen having a surface, placing the screen in front of the patient such that the patient can see the surface, and providing an image on the screen using the projector.
    Type: Application
    Filed: March 2, 2010
    Publication date: June 24, 2010
    Applicant: VARIAN MEDICAL SYSTEMS, INC.
    Inventors: Andrew G. JEUNG, Hassan MOSTAFAVI
  • Patent number: 7715606
    Abstract: A marker system includes a marker, and a positioner coupled to the marker, the positioner configured to position the marker from a first predetermined position to a second predetermined position. A method of providing a marker system includes obtaining a first data representative of a first predetermined position, obtaining a second data representative of a second predetermined position, and moving a set of one or more markers from the first predetermined position to the second predetermined position, wherein the set of one or more markers is moved using a positioner. A method of using a marker system includes detecting a marker when the marker is located at a first position, moving the marker from the first position to a second position using a positioner, and detecting the marker when the marker is located at the second position.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: May 11, 2010
    Assignee: Varian Medical Systems, Inc.
    Inventors: Andrew G. Jeung, Hassan Mostafavi, Alexander Sloutsky, Sergey Povzner
  • Patent number: 7711087
    Abstract: A system for determining a position of an object includes an imaging system having a x-ray source and an imager, and a processor configured to obtain a tomosynthesis image of an object using the imaging system, and determine a position of the object using the tomosynthesis image. A method of determining a position of an object includes obtaining a tomosynthesis image of an object, and determining a coordinate of the object relative to a radiation machine using the tomosynthesis image. A device for determining a position of an object includes a processor for determining a coordinate of the object relative to a radiation machine using a tomosynthesis image. A method of determining a position of an object includes obtaining an image of an object, obtaining a reference image of the object, comparing the reference image with the image, and determining a coordinate of the object based at least in part on a result of the comparing, wherein the reference image has a plane that is parallel with a plane of the image.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: May 4, 2010
    Assignee: Varian Medical Systems, Inc.
    Inventor: Hassan Mostafavi
  • Publication number: 20100067739
    Abstract: A method for determining a position of a target includes obtaining a first image of the target, obtaining a second image of the target, wherein the first and the second images have different image planes and are generated at different times, processing the first and second images to determine whether the target in the first image corresponds spatially with the target in the second image, and determining the position of the target based on a result of the act of processing. Systems and computer products for performing the method are also described.
    Type: Application
    Filed: September 16, 2008
    Publication date: March 18, 2010
    Applicant: Varian Medical Systems, Inc.
    Inventors: Hassan Mostafavi, Alexander Sloutsky
  • Publication number: 20100069742
    Abstract: A method for use in a medical procedure includes obtaining a contrast-enhanced image of a portion of a patient, the portion of the patient having an object, obtaining a non-contrast-enhanced image of the portion, wherein the contrast-enhanced image and the non-contrast-enhanced image are created at different times, and determining a position of the object using the contrast-enhanced image and the non-contrast-enhanced image. A method for use in a medical procedure includes obtaining a contrast-enhanced image of a portion of a patient, the portion of the patient having an object, obtaining a non-contrast-enhanced image of the portion, and determining a position of the object using the contrast-enhanced image and the non-contrast-enhanced image, wherein the act of determining the position is performed is substantially real time.
    Type: Application
    Filed: September 15, 2008
    Publication date: March 18, 2010
    Applicant: VARIAN MEDICAL SYSTEMS, INC.
    Inventors: Larry PARTAIN, Hassan MOSTAFAVI, Stavros PRIONAS
  • Publication number: 20100061596
    Abstract: A method of determining a similarity with a portion of a physiological motion, includes obtaining a first image of an object, obtaining a second image of the object, determining a level of similarity between the first and second images, and correlating the determined level of similarity between the first and second images with a portion of the physiological motion. A computer product having a set of instructions, an execution of which causes a method of determining a similarity with a portion of a physiological motion to be performed, the method includes obtaining a first image of an object, obtaining a second image of the object, determining a level of similarity between the first and second images, and correlating the determined level of similarity between the first and second images with a portion of the physiological motion.
    Type: Application
    Filed: September 5, 2008
    Publication date: March 11, 2010
    Applicant: VARIAN MEDICAL SYSTEMS TECHNOLOGIES, INC.
    Inventors: Hassan Mostafavi, Sergey Povzner
  • Publication number: 20100063419
    Abstract: A method of monitoring a patient includes obtaining a first image of an object, obtaining a second image of the object, determining a level of similarity between the first and second images, obtaining a third image of the object, determining a level of similarity between the first and third images, analyzing a time series of values that includes the determined level of similarity between the first and second images and the determined level of similarity between the first and third images, and determining a state of the patient based at least on a result of the act of analyzing.
    Type: Application
    Filed: September 5, 2008
    Publication date: March 11, 2010
    Applicant: Varian Medical Systems Technologies, Inc.
    Inventors: Hassan Mostafavi, Sergey Povzner
  • Patent number: 7660384
    Abstract: A method of imaging a patient's uncompressed region of interest using X-ray cone beam computed tomography or cone beam digital tomography comprises the step of introducing an effective amount of a contrast agent to the uncompressed region of interest. A system for imaging a patient's uncompressed region of interest using cone beam computed tomography (CBCT) or cone beam digital tomography (CBDT) comprises an X-ray source transmitting an X-ray to the uncompressed region of interest, an image acquisition system acquiring a plurality of two-dimensional projection images data for a CBCT or CBDT data set with at least one of the projection images acquired in 35 milliseconds or less, and a processor generating a three-dimensional computed tomography image data set resolving voxels with dimensions of 0.4 mm or less in at least two orthogonal directions.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: February 9, 2010
    Assignee: Varian Medical Systems, Inc.
    Inventors: Larry Partain, Stavros Prionas, Edward Seppi, Robert Sutherland, David Humber, Hassan Mostafavi, Felix Fernando, John Boone
  • Patent number: 7620146
    Abstract: A method for processing x-ray images includes collecting a first x-ray image and a second x-ray image, determining a composite image based on the first and second x-ray images, collecting a third x-ray image, and adjusting the third x-ray image based on the composite image. Another method of processing x-ray images includes obtaining a first x-ray image, obtaining a second x-ray image, and determining a composite image based on at least a portion of the first and second x-ray images.
    Type: Grant
    Filed: November 6, 2006
    Date of Patent: November 17, 2009
    Assignee: Varian Medical Systems, Inc.
    Inventor: Hassan Mostafavi
  • Patent number: 7567697
    Abstract: A method and system for determining the position and orientation of an object is disclosed. A set of markers attached or associated with the object is optically tracked and geometric translation is performed to use the coordinates of the set of markers to determine the location and orientation of their associated object.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: July 28, 2009
    Assignee: Varian Medical Systems, Inc.
    Inventor: Hassan Mostafavi
  • Publication number: 20090088622
    Abstract: A method of processing image data that includes obtaining image data, determining a phase of a respiratory cycle, and associating the image data with the determined phase within 60 seconds, and more preferably, within 15 seconds, after the image data is obtained. A system for processing image data that includes a processor configured for obtaining image data, determining a phase of a respiratory cycle, and associating the image data with the determined phase within 60 seconds, and more preferably, within 15 seconds, after the image data is obtained. A method of processing image data that includes obtaining image data during an image acquisition session, determining a phase of a respiratory cycle, and associating the image data after the image data is obtained but before the image acquisition session is completed.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 2, 2009
    Applicant: VARIAN MEDICAL SYSTEMS TECHNOLOGIES, INC.
    Inventor: Hassan MOSTAFAVI
  • Publication number: 20090060311
    Abstract: A method includes obtaining a first image of an object, obtaining a second image of an object, determining a level of correlation between the first and second images, and using the determined level of correlation between the first and second images to obtain information regarding a motion of the object.
    Type: Application
    Filed: July 30, 2008
    Publication date: March 5, 2009
    Applicant: VARIAN MEDICAL SYSTEMS, INC.
    Inventor: Hassan MOSTAFAVI
  • Publication number: 20080287728
    Abstract: A marker system includes a structure having a first surface and a second surface, a first marker located on the first surface, and a second marker located on the second surface, wherein the first marker and the second marker are arranged so that they face approximately a same direction, and so that they can be simultaneously viewed by an optical device, and wherein a first distance between the first marker and the optical device is different from a second distance between the second marker and the optical device when the first and the second markers are simultaneously viewed by the optical device.
    Type: Application
    Filed: May 14, 2007
    Publication date: November 20, 2008
    Applicant: Varian Medical Systems Technologies, Inc.
    Inventors: Hassan Mostafavi, Andrew G. Jeung
  • Publication number: 20080226018
    Abstract: A method of imaging a patient's uncompressed region of interest using X-ray cone beam computed tomography or cone beam digital tomography comprises the step of introducing an effective amount of a contrast agent to the uncompressed region of interest. A system for imaging a patient's uncompressed region of interest using cone beam computed tomography (CBCT) or cone beam digital tomography (CBDT) comprises an X-ray source transmitting an X-ray to the uncompressed region of interest, an image acquisition system acquiring a plurality of two-dimensional projection images data for a CBCT or CBDT data set with at least one of the projection images acquired in 35 milliseconds or less, and a processor generating a three-dimensional computed tomography image data set resolving voxels with dimensions of 0.4 mm or less in at least two orthogonal directions.
    Type: Application
    Filed: May 23, 2008
    Publication date: September 18, 2008
    Applicant: Varian Medical Systems Technologies, Inc.
    Inventors: Larry D. Partain, Stavros Prionas, Edward Seppi, Robert Sutherland, David Humber, Hassan Mostafavi, Felix Fernando, John Boone
  • Patent number: 7403638
    Abstract: A method and system for monitoring breathing movement of a subject is disclosed. A method and system for detecting and predictably estimating regular cycles of breathing movements is disclosed. Another disclosed aspect of the invention is directed to detect and report irregularity of breathing activity of an infant, such as cessation and non-periodicity, which suggests a likelihood of SIDS.
    Type: Grant
    Filed: October 14, 2006
    Date of Patent: July 22, 2008
    Assignee: Varian Medical Systems Technologies, Inc.
    Inventors: Andrew Jeung, Hassan Mostafavi, Majid L. Riaziat, Robert M. Sutherland, George Zdasiuk
  • Patent number: 7394889
    Abstract: A method of imaging a patient's uncompressed region of interest using X-ray cone beam computed tomography or cone beam digital tomography comprises the step of introducing an effective amount of a contrast agent to the uncompressed region of interest. A system for imaging a patient's uncompressed region of interest using cone beam computed tomography (CBCT) or cone beam digital tomography (CBDT) comprises an X-ray source transmitting an X-ray to the uncompressed region of interest, an image acquisition system acquiring a plurality of two-dimensional projection images data for a CBCT or CBDT data set with at least one of the projection images acquired in 35 milliseconds or less, and a processor generating a three-dimensional computed tomography image data set resolving voxels with dimensions of 0.4 mm or less in at least two orthogonal directions.
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: July 1, 2008
    Assignee: Varian Medical Systems Technologies, Inc.
    Inventors: Larry D. Partain, Stavros Prionas, Edward Seppi, Robert Sutherland, David Humber, Hassan Mostafavi, Felix Fernando, John Boone
  • Publication number: 20080095416
    Abstract: A marker system includes a marker, and a positioner coupled to the marker, the positioner configured to position the marker from a first predetermined position to a second predetermined position. A method of providing a marker system includes obtaining a first data representative of a first predetermined position, obtaining a second data representative of a second predetermined position, and moving a set of one or more markers from the first predetermined position to the second predetermined position, wherein the set of one or more markers is moved using a positioner. A method of using a marker system includes detecting a marker when the marker is located at a first position, moving the marker from the first position to a second position using a positioner, and detecting the marker when the marker is located at the second position.
    Type: Application
    Filed: October 18, 2006
    Publication date: April 24, 2008
    Inventors: Andrew G. Jeung, Hassan Mostafavi, Alexander Sloutsky, Sergey Povzner