Patents Assigned to SCANDIDOS AB
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Patent number: 10610703Abstract: The present invention relates to a method for determining an energy fluence correction in a quality assurance system for a radiation therapy apparatus, which method comprises receiving a treatment plan description; generating a set of measured phantom dose values; generating a set of determined phantom dose values, by determining phantom dose values based on at least the treatment plan description and a phantom description; determining a set of phantom dose corrections based on at least the set of determined phantom dose values and the set of measured phantom dose values; and determining an energy fluence correction based on at least the set of phantom dose corrections. It further relates to a method for determining a reconstructed patient dose distribution based on at least the energy fluence correction, a patient description, and further data related to the treatment plan description. It also relates to corresponding quality assurance and control systems.Type: GrantFiled: June 14, 2016Date of Patent: April 7, 2020Assignee: ScandiDos ABInventors: Anders Gustafsson, Thomas Matzen, Erik Bängtsson
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Patent number: 10549126Abstract: A position detector arranged to be mounted at a radiation detector of a radiotherapy treatment apparatus, which includes a gantry rotatable about a gantry rotation axis, and a collimator rotatable about a collimator rotation axis. The radiation detector is mounted at the collimator. The position detector comprises: —an accelerometer device, which is arranged to detect at least gravitational acceleration in at least one dimension; —a gyro device arranged to detect at least angular velocity in at least one dimension; wherein the accelerometer device and the gyro device in common are arranged to be operative in three dimensions, and —a controller connected with the accelerometer and the gyro; wherein the controller is arranged to receive first input data from the accelerometer device and second input data from the gyro device, and to determine at least a collimator angle and a gantry angle by means of the first and second input data.Type: GrantFiled: June 26, 2015Date of Patent: February 4, 2020Assignee: SCANDIDOS ABInventor: Per Baecklund
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Publication number: 20180200537Abstract: The present invention relates to a method for determining an energy fluence correction in a quality assurance system for a radiation therapy apparatus, which method comprises receiving a treatment plan description; generating a set of measured phantom dose values; generating a set of determined phantom dose values, by determining phantom dose values on basis of at least the treatment plan description and a phantom description; determining a set of phantom dose corrections on basis of at least the set of determined phantom dose values and the set of measured phantom dose values; and determining an energy fluence correction on basis of at least the set of phantom dose corrections. It further relates to a method for determining a reconstructed patient dose distribution on basis of at least the energy fluence correction, a patient description, and further data related to the treatment plan description. It also relates to corresponding quality assurance and control systems.Type: ApplicationFiled: June 14, 2016Publication date: July 19, 2018Applicant: ScandiDos ABInventors: Anders Gustafsson, Thomas Matzen, Erik Bängtsson
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Patent number: 9778373Abstract: The present invention generally relates to a radiation sensor for use particularly in, but by no means exclusively, in measuring radiation dose in photon or electron fields such as for radiation medicine, including radiotherapy and radiation based diagnosis. According to the present invention, there is provided a semiconductor radiation detector comprising a radiation sensitive detector element arranged such that it forms a continuous radiation sensitive portion having surfaces oriented in at least two non-parallel directions.Type: GrantFiled: May 20, 2011Date of Patent: October 3, 2017Assignee: SCANDIDOS ABInventors: Görgen Nilsson, Stephane Junique, Wlodek Kaplan, Peter Norlin
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Publication number: 20170274225Abstract: A position detector arranged to be mounted at a radiation detector of a radiotherapy treatment apparatus, which includes a gantry rotatable about a gantry rotation axis, and a collimator rotatable about a collimator rotation axis. The radiation detector is mounted at the collimator. The position detector comprises: an accelerometer device, which is arranged to detect at least gravitational acceleration in at least one dimension; a gyro device arranged to detect at least angular velocity in at least one dimension; wherein the accelerometer device and the gyro device in common are arranged to be operative in three dimensions, and a controller connected with the accelerometer and the gyro; wherein the controller is arranged to receive first input data from the accelerometer device and second input data from the gyro device, and to determine at least a collimator angle and a gantry angle by means of the first and second input data.Type: ApplicationFiled: June 26, 2015Publication date: September 28, 2017Applicant: ScandiDos ABInventor: Per Baecklund
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Publication number: 20140091413Abstract: The present invention generally relates to a radiation sensor for use particularly in, but by no means exclusively, in measuring radiation dose in photon or electron fields such as for radiation medicine, including radiotherapy and radiation based diagnosis. According to the present invention, there is provided a semiconductor radiation detector comprising a radiation sensitive detector element arranged such that it forms a continuous radiation sensitive portion having surfaces oriented in at least two non-parallel directions.Type: ApplicationFiled: May 20, 2011Publication date: April 3, 2014Applicant: SCANDIDOS ABInventors: Görgen Nilsson, Stephane Junique, Wlodek Kaplan, Peter Norlin