Varian Medical Systems Patent Applications

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;…

IMAGE PROCESSING OF IMAGES THAT INCLUDE MARKER IMAGES

Granted: January 7, 2016
Application Number: 20160005178
A method, includes: obtaining an image, the image having marker images and a background image; identifying presence of an object in the background image using a processor; and providing a signal for stopping a procedure if the presence of the object is identified. An image processing apparatus, includes: a processor configured for: obtaining an image, the image having marker images and a background image; identifying presence of an object in the background image; and providing a signal…

BEAM CURRENT VARIATION SYSTEM FOR A CYCLOTRON

Granted: December 10, 2015
Application Number: 20150359081
Beam current variation system for a cyclotron, arranged in the inner centre of the cyclotron, downstream from the ion source generating the charged particle beam, the system comprising a deflector system powered by a voltage and a collimator. The beam is dumped in the collimator, if the deflector system (10; 20, 21) is not powered, and the beam is switched on by powering the deflector system with a voltage.

MULTI LEVEL MULTILEAF COLLIMATOR LEAF TIP SHAPE EFFECTS AND PENUMBRA OPTIMIZATION

Granted: October 1, 2015
Application Number: 20150273239
A multi level multileaf collimator employs leaves with leaf tips having a non-square shape in a beam's eye view to improve beam shaping effect and penumbra performance. The multi level multileaf collimator includes a first multileaf collimator in a first level comprising beam blocking leaves longitudinally movable in a first direction, and a second multileaf collimator in a second level comprising beam blocking leaves longitudinally movable in a second direction. The first direction may…

LOW POWER STANDBY MODE IN WIRELESS IMAGERS

Granted: October 1, 2015
Application Number: 20150276942
This invention describes a novel solution to conserve battery and to overcome cold-start artifacts by maintaining the pixel charge traps at a stable value at all times. The design of NIP photodiode and TFT combination requires very low current (in order of hundreds of ?A) to stay biased at all times. This allows the pixel charge traps to be easily maintained at a stable value with low power consumption. Power consumption is kept at a minimum by keeping all panel electronics off and only…

SYSTEMS, METHODS, AND DEVICES FOR REAL-TIME TREATMENT VERIFICATION USING AN ELECTRONIC PORTAL IMAGING DEVICE

Granted: August 13, 2015
Application Number: 20150224342
A radiation dose received by a patient from a radiation therapy system can be verified by acquiring a cine stream of image frames from an electronic portal imaging device (EPID) that is arranged to detect radiation exiting the patient during irradiation. The cine stream of EPID image frames can be processed in real-time to form exit images providing absolute dose measurements at the EPID (dose-to-water values), which is representative of the characteristics of the radiation received by…