Sun City Center, FL, United States
Sun City Center, FL, United States

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Patent
Sun Nuclear Corporation | Date: 2015-12-17

Radiation therapy dose calculation methods, systems and computer program products, for use with a treatment delivery device for treating a patient and utilizing a scattered radiation detector in making independent dose calculations. The scattered radiation detector is configured to acquire measurement information during patient treatment, which is used to determine an estimate of the output of the treatment delivery device. Other information is acquired including patient imaging data, gantry angle information and collimator position information utilized during patient treatment. The acquired information is utilized along with the treatment delivery device output estimate to determine dose delivered to the patient.


Patent
Sun Nuclear Corporation | Date: 2012-08-31

A treatment safety device is operable by a computer-based treatment safety module to prevent, by at least one of an operational interlock and a warning indicator, a medical treatment unless the treatment safety module determines that predetermined treatment verification criteria are met. The treatment safety device can tie into an existing operational interlock, such as an electrical door interlock. In a radiation oncology application, the treatment safety module verification criteria can include a satisfactory correspondence between elements of a pending treatment and an intended treatment.


Patent
Sun Nuclear Corporation | Date: 2015-05-07

A radiotherapy system includes a radiotherapy device, such as a LINAC, operable to direct a radiation beam from a head thereof during operation, a field detector positioned to be within the radiation beam during operation of the radiotherapy device and operable to generate a beam measurement signal, a reference detector positioned to be outside of the radiation beam during operation of the radiotherapy device and operable to generate a reference signal, and at least one computer in signal communication with the field detector and the reference detector and configured with software to normalize the beam measurement signal based on the reference signal and to output a normalized beam measurement.


Patent
Sun Nuclear Corporation | Date: 2016-10-07

A system for evaluating radiation treatment planning generates a fictitious treatment dose matrix with a quality of dose placement beyond that achievable with physically realizable radiation therapy machines. Such a fictitious treatment dose matrix provides an objective measure that is readily tailored to different clinical situations, and although unattainable, thereby provides a benchmark allowing evaluation of radiation plan goals and the radiation plans between different multiple clinical situations and individuals.


Patent
Sun Nuclear Corporation | Date: 2015-04-23

A computer program product, method, system and device that acquires, by a radiation detector, exit radiation measurement information during delivery of patient treatment. Patient anatomy information is also received and a radiation detector response calibration is determined utilizing at least the exit radiation measurement information, the patient anatomy information, and at least a portion of a radiation treatment plan.


A method for performing composite dose quality assurance with a three-dimensional (3D) radiation detector array includes delivering a radiation fraction to the 3D array according to a radiation treatment (RT) plan, measuring absolute dose per detector of the 3D array, per unit of time, determining a radiation source emission angle per unit of time, synchronizing the RT plan with the measured absolute doses and determined radiation source emission angles to determine an absolute time for a control point of each beam of the synchronized RT plan, converting the beams of the synchronized RT plan into a series of sub-beams, generating a 3D relative dose grid for each of the sub-beams, applying a calibration factor grid to each of the 3D relative dose grids to determine a 3D absolute dose grid for each of the sub-beams, summing the 3D absolute dose grids to generate a 3D absolute dose deposited in the 3D array, and determining a 3D dose correction grid for application to the RT plan based on the 3D absolute dose.


Grant
Agency: Department of Health and Human Services | Branch: National Institutes of Health | Program: SBIR | Phase: Phase I | Award Amount: 279.56K | Year: 2015

DESCRIPTION provided by applicant Modern day radiotherapy has developed in complexity to the degree that significant treatment errors are both difficult to detect and difficut to completely avoid In the current day radiotherapy department it is common to have a large number of patients being treated with Intensity Modulated Radiotherapy IMRT techniques When treating patients with these techniques it can be difficult to detect patient setup errors and virtually impossible to detect beam collimation errors without the use of automated secondary checks Incorrect dose delivery or dose delivered to the wrong area is also an ongoing treatment risk Despite gains in the implementation of automated mechanisms for detection of errors the incidence of concerning treatment misadministrations is still significant Treatment delivery errors in the modern era have been reported by several authors as occurring during from to of patientsandapos courses of treatment While most of these are judged to not be of clinical importance the rate of significant treatment errors is still thousands of incidents per yar in the United States alone Compromised radiotherapy treatments can lead to lower control rates and or higher complication rates We will develop a system that will provide the radiotherapy clinic with the capability to completely and independently measure the geometric alignment and dosimetric compliance of an individual treatment fraction in real time as the patient is treated with any arbitrarily complex treatment technique The system will consist of a high density cloak of radiation detectors deployed in a ring centered on the treatment apparatus isocenter and within the rotational circle of the head s of the radiation delivery system The detector cloak will surround the area within the patient being treated and will measure the radiation fluence both entering and exiting the patient The dosimetric data acquired at the time of treatment will allow for the calculation of the complete dose distribution actually delivered to the patient for each and every treatment session The detection system will be physically and electronically independent of the treatment system thereby providing a truly comprehensive secondary monitor of the delivered dose Development and clinical deployment of a completely independent treatment verification system for radiotherapy has the potential to significantly reduce radiotherapy treatment errors The reduction of treatment delivery errors can increase local tumor control rates reduce the rate of treatment complications or both The ongoing compilation of actual treatment delivery compliance data will serve as invaluable confirmation of the benefit or lack thereof of newly implemented quality assurance techniques PUBLIC HEALTH RELEVANCE This proposed device will have a significant impact on public health It will catch human errors that heretofore go unnoticed where the errors range from minor to life threatening and it will document the entire treatment course thus providing essential data for quality improvement feedback Conservative estimates range from to of patients undergoing radiotherapy treatment may benefit from the reduction of errors that could be achieved with the implementation of a completely independent dosimetric monitoring system


Patent
Sun Nuclear Corporation | Date: 2015-04-03

Data from a first radiation detector and a second radiation detector can be used to determine a radiation dose pattern delivered to a radiation target from a radiation source. The first radiation detector can be positioned to intercept ionizing radiation directed from the radiation source toward the radiation target before the ionizing radiation has impinged on the radiation target and the second radiation detector can be positioned to intercept the ionizing radiation after the ionizing radiation has passed through the radiation target. Methods, systems, articles of manufacture, and computer program products are described.


Grant
Agency: Department of Health and Human Services | Branch: National Institutes of Health | Program: SBIR | Phase: Phase II | Award Amount: 1.32M | Year: 2016

DESCRIPTION provided by applicant Modern day radiotherapy has developed in complexity to the degree that significant treatment errors are both difficult to detect and difficut to completely avoid In the current day radiotherapy department it is common to have a large number of patients being treated with Intensity Modulated Radiotherapy IMRT techniques When treating patients with these techniques it can be difficult to detect patient setup errors and virtually impossible to detect beam collimation errors without the use of automated secondary checks Incorrect dose delivery or dose delivered to the wrong area is also an ongoing treatment risk Despite gains in the implementation of automated mechanisms for detection of errors the incidence of concerning treatment misadministrations is still significant Treatment delivery errors in the modern era have been reported by several authors as occurring during from to of patientsandapos courses of treatment While most of these are judged to not be of clinical importance the rate of significant treatment errors is still thousands of incidents per yar in the United States alone Compromised radiotherapy treatments can lead to lower control rates and or higher complication rates We will develop a system that will provide the radiotherapy clinic with the capability to completely and independently measure the geometric alignment and dosimetric compliance of an individual treatment fraction in real time as the patient is treated with any arbitrarily complex treatment technique The system will consist of a high density cloak of radiation detectors deployed in a ring centered on the treatment apparatus isocenter and within the rotational circle of the head s of the radiation delivery system The detector cloak will surround the area within the patient being treated and will measure the radiation fluence both entering and exiting the patient The dosimetric data acquired at the time of treatment will allow for the calculation of the complete dose distribution actually delivered to the patient for each and every treatment session The detection system will be physically and electronically independent of the treatment system thereby providing a truly comprehensive secondary monitor of the delivered dose Development and clinical deployment of a completely independent treatment verification system for radiotherapy has the potential to significantly reduce radiotherapy treatment errors The reduction of treatment delivery errors can increase local tumor control rates reduce the rate of treatment complications or both The ongoing compilation of actual treatment delivery compliance data will serve as invaluable confirmation of the benefit or lack thereof of newly implemented quality assurance techniques PUBLIC HEALTH RELEVANCE This proposed device will have a significant impact on public health It will catch human errors that heretofore go unnoticed where the errors range from minor to life threatening and it will document the entire treatment course thus providing essential data for quality improvement feedback Conservative estimates range from to of patients undergoing radiotherapy treatment may benefit from the reduction of errors that could be achieved with the implementation of a completely independent dosimetric monitoring system


Patent
Sun Nuclear Corporation | Date: 2013-11-15

A radiotherapy system includes a radiotherapy device, such as a LINAC, operable to direct a radiation beam from a head thereof during operation, a field detector positioned to be within the radiation beam during operation of the radiotherapy device and operable to generate a beam measurement signal, a reference detector positioned to be outside of the radiation beam during operation of the radiotherapy device and operable to generate a reference signal, and at least one computer in signal communication with the field detector and the reference detector and configured with software to normalize the beam measurement signal based on the reference signal and to output a normalized beam measurement.

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