Elekta Ltd

Burgess Hill, United Kingdom

Elekta Ltd

Burgess Hill, United Kingdom
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Patent
Elekta Ltd | Date: 2017-05-31

The present invention provides methods and apparatus for safely managing the provision of radiotherapy treatment potentially in many different locations around the world. A database is formed comprising allowable ranges for each of a plurality of calibration settings in a calibration data set used to implement treatment plans in radiotherapy systems. Prior to treatment, the calibration settings of a proposed calibration data set are compared to these allowable ranges to see whether the treatment should be allowed to proceed. If one or more of the proposed calibration settings falls outside the allowable ranges, the therapy session may be stopped or prevented altogether.


Patent
Elekta Ltd | Date: 2017-02-01

A radiotherapy apparatus, and a related method, comprising a source of radiation able to issue pulses of radiation at a base frequency, and a control apparatus arranged to achieve a time-averaged power level of x, where x is a value between 0 and 1 representing a proportion of a maximum power output of the apparatus, by permitting an n^(th) pulse if n is equal to the rounded value of (an integer times 1/x). The pulses may form a repeating pulse train pattern, and the control apparatus may comprise a processing unit, the processing unit being configured to provide a pulse train pattern having a number of available slots, M, each slot being marked as a permitted pulse or a suppressed pulse, the processing unit being configured to generate such a pulse train pattern with a selected number of permitted pulses, Q, by: i) dividing M by Q to calculate a factor P; ii) calculating a series of incremented multiples of P, P_(N) = NP, until N = Q, where N increments from one; iii) rounding the values of P_(N) to produce a set of values R_(N); and iv) marking each pulse train slot so that slot positions which correspond to the values of R_(N) are marked as permitted pulses, and all other slot positions are marked as suppressed pulses.


Patent
Elekta Ltd | Date: 2017-08-23

An apparatus for enabling a first device (1) to identify a second device (2) comprises a first interface (4) and a second interface (6). Each interface is configured to allow communication between the first device (1) and the second device (2), and the first interface (4) is distinct from the second interface (6). The apparatus further comprises one or more controllers (8, 10) configured to receive a first identifier from the second device (2) via the first interface (4). If the first identifier has a predetermined value, the controllers (8, 10) receive a second identifier from the second device (2) via the second interface (6). The controllers (8, 10) identify the second device (2) using the second identifier.


Patent
Elekta Ltd | Date: 2016-12-14

In a fractionated radiotherapy treatment, once the first fraction is complete and has been verified, there exists a body of data which is representative of the dose development during delivery of the treatment for that patient and that treatment plan. This can therefore be used as a comparator for the instantaneous doses observed during subsequent fractions. This allows real-time dosimetry verification for the second and subsequent fractions after a successful first fraction.


Patent
Elekta Ltd | Date: 2016-06-10

Embodiments of the present disclosure provide improved techniques for dosimetry in radiotherapy treatment. In a fractionated radiotherapy treatment, once the first fraction is complete and has been verified, data is generated which is representative of the dose development during delivery of the treatment for that patient and that treatment plan. This data can be used as a comparator for the instantaneous doses observed during subsequent fractions, allowing real-time dosimetry verification for the second and subsequent fractions after a successful first fraction.


Patent
Elekta Ltd | Date: 2016-06-10

Embodiments of the present disclosure provide improved techniques for dosimetry in radiotherapy treatment. In a fractionated radiotherapy treatment, the expected dose buildup is computed in advance of a fraction delivery based on the instructions in the treatment plan. The progress of the fraction is then monitored using an electronic portal image detector (EPID), and fluence data from the EPID used to calculate an estimate of the actual dose build-up in real time. This estimate can be compared to the expected dose buildup in order to validate the fraction.


Patent
Elekta Ltd | Date: 2016-05-04

We disclose a radiotherapy apparatus with a dose verification system in which the portal image is displayed against a background of a better-quality image diagnostic image, such as a two-dimensional radiograph, an ultrasound image, or a section taken from a three-dimensional magnetic-resonance image, cone-beam CT image, or the like.


Patent
Elekta Ltd. | Date: 2016-03-09

A displacement of a lesion within a patient is determined for the purpose of administering radiation treatment by generating sets of surface elements from three-dimensional images of the lesion taken at different times. Weights are assigned to the surface elements, and based on weights and the proximity of corresponding elements in one set to elements in another set, a displacement is determined.


Patent
Elekta Ltd | Date: 2016-12-14

In a fractionated radiotherapy treatment, the expected dose buildup is computed in advance of a fraction delivery based on the instructions in the treatment plan. The progress of the fraction is then monitored using the EPID, and the fluence data from the EPID used to calculate an estimate of the actual dose build-up in real time. This can be compared to the expected dose buildup in order to validate the fraction.


Patent
Elekta Ltd | Date: 2016-08-31

A method of integrating a first computer (120) and a second computer (110) is disclosed. The first computer executes a software application (125) having a graphical user interface. The second computer renders (506) the graphical user interface, receives (508) an identification of an event that has occurred in the software application, and identifies (510) an action to be performed by the second computer in response to the occurrence of the event, the action being identified from a predefined sequence of actions. The second computer performs (512) the identified action to modify the rendering of the graphical user interface.

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