Varian Medical Systems Patent Applications

MEDICAL SYSTEMS WITH PATIENT SUPPORTS

Granted: September 14, 2017
Application Number: 20170258414
A radiation system includes a first ring, a radiation source capable of providing radiation suitable for treating a patient, the radiation source secured to the first ring, a second ring located behind the first ring, and an imager secured to the second ring. A radiation system includes a first device having a radiation source capable of generating a radiation beam suitable for treating a patient, and a second device having imaging capability, wherein the first device is oriented at an…

AUTOMATIC ORGAN-DOSE-ESTIMATION FOR PATIENT-SPECIFIC COMPUTED TOMOGRAPHY SCANS

Granted: August 31, 2017
Application Number: 20170245825
In accordance with at least some embodiments of the present disclosure, a process for calculating patient-specific organ dose is presented. The process may include constructing a computed tomography (CT) volume based on CT images generated by a CT scanner. The process may include segmenting the CT volume into a plurality of organ regions, generating a material density map for the CT volume based on Hounsfield Unit (HU) values, and generating a dose distribution map for the CT volume…

5D CONE BEAM CT USING DEFORMABLE REGISTRATION

Granted: August 31, 2017
Application Number: 20170249740
An apparatus includes: an input configured to receive a plurality of images, wherein the images include respective sub-images of a bodily part of a subject, and wherein a position of the bodily part relates to a breathing movement and a cardiac movement of the subject; a first registration engine configured to determine a first registration of at least two breathing correlated images, wherein the at least two breathing correlated images comprise two of the plurality of images or are…

SYSTEM AND METHOD FOR COLLISION AVOIDANCE IN MEDICAL SYSTEMS

Granted: August 3, 2017
Application Number: 20170220709
A method of detecting a possible collision in a medical procedure that involves a medical system, includes: obtaining an image of a patient that is supported on a patient support; determining a first model using a processing unit based at least in part on the image, at least a part of the first model representing a surface of the patient; determining a second model using the processing unit, the second model representing a first component of the medical system; virtually moving the first…

SYSTEMS AND METHODS FOR EVALUATING MOTION TRACKING FOR RADIATION THERAPY

Granted: July 13, 2017
Application Number: 20170200276
An apparatus includes: a processor configured for obtaining a first image that corresponds with a first multi-leaf collimator (MLC) configuration, wherein the first image is generated when the MLC is stationary, obtaining a second image that corresponds with a second MLC configuration, wherein the second image is generated when the MLC and/or another component of a radiation machine is being operated to track a motion, and performing an analysis based at least in part on the first image…

PATIENT SETUP USING RESPIRATORY GATED AND TIME RESOLVED IMAGE DATA

Granted: April 6, 2017
Application Number: 20170095197
A method for patient setup includes: obtaining a first two-dimensional movie having a first plurality of image frames; obtaining a first plurality of two-dimensional images; and displaying the first plurality of two-dimensional images together with the image frames from the first two-dimensional movie in an overlay configuration and in a synchronized manner, wherein the act of displaying is performed during a patient setup procedure. A method for patient setup includes: obtaining a…

SYSTEMS AND METHODS FOR TREATING A SKIN CONDITION USING RADIATION

Granted: April 6, 2017
Application Number: 20170095677
A medical device for treating a skin of a patient includes: a radiation source configured to provide radiation; a collimator coupled to the radiation source; and an optical device for viewing a target area on the skin when a distal end of the medical device is covering the skin. A method of treating a skin of a patient includes: providing a treatment device having a distal end, a radiation source, and a collimator, wherein the distal end is configured for placement over the skin of the…

SYSTEMS AND METHODS FOR QUANTIFYING RADIATION BEAM CONFORMITY

Granted: April 6, 2017
Application Number: 20170095678
A method for quantifying radiation beam conformity includes: obtaining first information regarding a prescribed aperture; obtaining second information regarding an actual aperture defined by components of a collimator; and determining, using a processing unit, a metric based on the first information regarding the prescribed aperture and the second information regarding the actual aperture, wherein the metric indicates an amount of over-exposed aperture area, an amount of under-exposed…

APPARATUS AND METHOD FOR PRECISE APPLICATION OF LUBRICANT ON COLLIMATOR COMPONENTS

Granted: April 6, 2017
Application Number: 20170096612
A method of applying a lubricant onto a carriage box of a collimator includes: providing a mixture having a lubricant and a solvent; applying an amount of the mixture that includes a predetermined quantity of the lubricant onto a first set of guide rails at a first side of the carriage box; and removing the solvent from the mixture to leave the lubricant adhering to the surface. A kit for lubricating a collimator includes: a container housing a lubricating mixture having a lubricant…

HIGH DQE IMAGING DEVICE

Granted: April 6, 2017
Application Number: 20170097425
An imaging device includes: a scintillator layer; and an array of photodiode elements; wherein the scintillator layer is configured to receive radiation that has passed through the array of photodiode elements. An imaging device includes: a scintillator layer having a plurality of scintillator elements configured to convert radiation into photons; and an array of photodiode elements configured to receive photons from the scintillator layer, and generate electrical signals in response to…

SYSTEMS AND METHODS FOR DETECTING CAMERA DEFECT CAUSED BY EXPOSURE TO RADIATION

Granted: April 6, 2017
Application Number: 20170098308
A method of detecting camera defect includes: obtaining an image by a processing unit, the processing unit having a surface fit module, a subtraction module, and a peak quantification module; determining a first autocorrelation map for a first sub-region in the image; determining, using the surface fit module, a first surface fit for first scene content in the first sub-region; subtracting, using the subtraction module, the first surface fit from the first autocorrelation map for the…

SHAPE SIMILARITY MEASURE FOR BODY TISSUE

Granted: March 23, 2017
Application Number: 20170084030
A shape similarity metric can be provided that indicates how similar two or more shapes are. A difference between a union of the shapes and an intersection of the shapes can be used to determine the similarity metric. The shape similarity metric can provide an average distance between the shapes. Different processes for determining shapes can be evaluated for accuracy based on the shape similarity metric. New or alternative shape-determining processes can be compared for accuracy against…

SYSTEMS AND METHODS FOR PATIENT POSITION MONITORING

Granted: January 19, 2017
Application Number: 20170014648
A method of monitoring a patient includes: obtaining an input image having a plurality of regions of interest by a processing unit; and determining a plurality of positions for the respective plurality of regions of interest by the processing unit; wherein the act of determining the plurality of positions comprises: accessing a plurality of templates; comparing the plurality of templates with respective areas in the input image using a comparator in the processing unit; and determining…

PIXEL CIRCUIT WITH CONSTANT VOLTAGE BIASED PHOTODIODE AND RELATED IMAGING METHOD

Granted: December 8, 2016
Application Number: 20160360133
An imaging system includes a plurality of pixel circuits each having a photodiode, a biasing circuit and a charge-to-voltage converter. The photodiode is configured to generate charges in response to light or radiation. The biasing circuit is configured to provide a constant bias voltage across the photodiode so as to drain the charges generated by the photodiode. The charge-to-voltage converter is configured to accumulate the charges drained by the biasing circuit and convert the…

IRRADIATION DEVICE AND METHOD

Granted: September 29, 2016
Application Number: 20160279447
Irradiation device for irradiating an irradiation object with heavy charged particles, comprising a support for the irradiation object, and an irradiation nozzle irradiating a charged particle beam towards the irradiation object, wherein the beam is deflected within the irradiation nozzle. The support for the irradiation object is moveable at least horizontally, and the irradiation nozzle is moveable at least vertically and rotatable around a nozzle swivel axis along which the particle…

RADIATION SYSTEMS WITH MINIMAL OR NO SHIELDING REQUIREMENT ON BUILDING

Granted: August 4, 2016
Application Number: 20160220848
A radiation system includes a support, a capsule rotatably coupled to the support, a radiation source movably coupled to the capsule, wherein the radiation source is configured to provide a treatment radiation beam, and is capable of being turned on or off in response to a control signal, and a collimator located next to the radiation source, wherein the capsule defines a space for accommodating a portion of a patient, and includes a shielding material for attenuating radiation resulted…

METHODS AND SYSTEMS FOR ESTIMATING SCATTER

Granted: July 28, 2016
Application Number: 20160213345
One example method for estimating scatter associated with a target object may include acquiring a set of original projection data that includes primary radiation and scattered radiation at one or more selected projection angles associated with the target object, generating a first set of estimated scatter data from the set of original projection data, generating reconstructed image data by performing a first pass reconstruction using the first set of estimated scatter data, and…

ELECTRONIC MEDICAL CHART

Granted: July 7, 2016
Application Number: 20160196390
A handheld electronic device includes a network communication device for wirelessly receiving information regarding a plurality of tasks involved in a treatment process for a patient from a database, a processor for processing the information regarding the plurality of tasks, a housing containing the processor, wherein the housing is configured for handheld, and a screen configured to display a graphic using the information regarding the plurality of tasks, the graphic indicating the…

RADIATION SYSTEM WITH ROTATING PATIENT SUPPORT

Granted: May 26, 2016
Application Number: 20160144199
A patient support system includes a patient support having a surface for supporting a patient and a longitudinal axis, and a positioner coupled to the patient support for positioning the patient support, wherein the positioner is configured to move the patient support along a path that has an arc, circular, or zig-zag shape, and wherein the path lies within a plane that forms an angle with the surface of the patient support.

METHODS FOR IMAGE PROCESSING

Granted: January 14, 2016
Application Number: 20160012584
An image processing method includes: obtaining an image that includes a ball image and a cone image; obtaining an estimate of a center of the ball image; converting the image to a converted image using a processor based at least in part on the estimate of the center of the ball image, wherein the converted image comprises a converted ball image that looks different from the ball image in the image, and a converted cone image that looks different from the cone image in the image;…