141 results about "Dose monitoring" patented technology

Described herein is a smart dose monitoring device. The dose monitoring device may include electronics such as motion sensors, orientation sensors, and timers related to monitoring the time of and amount of dose administered during an injection event.

A system integrates drug cumulative dosage monitoring, clinical information storage and workflow providing clinical notifications and worklists. The system monitors patient cumulative medication intake and includes at least one repository of information identifying medications and associated cumulative dosage limits for different time periods and for different types of patient. A monitoring processor, in response to a detected administration event indicating an additional dosage of a particular medication is to be administered to a particular patient, automatically determines whether a cumulative dosage, including the additional dosage, of the particular medication of the particular patient exceeds a cumulative dosage limit over a time period using information derived from the at least one repository. A notification processor automatically initiates generation of an alert message to at least one healthcare worker using a selected communication method The selected healthcare worker and the selected communication method is identified using predetermined notification configuration information.

A dose inhalation monitor includes a main body for containing medicine therein, a dose monitoring unit and a transmission device. The main body has a feeding mouth and a bypass communicated spatially with the feeding mouth. The dose monitoring unit is disposed on the main body, and includes a detector capable of detecting and converting a pressure within the bypass into a voltage level and a processor capable of processing the voltage level in order to generate an oral dose of medicine corresponding to the voltage level. The transmission device is connected to the dose monitoring unit for transmitting the oral dose of medicine to a distal receiver after receipt thereof.

A particle beam treatment device includes an irradiation nozzle which moves a particle beam in a direction which is perpendicular to an advancing direction; a dose monitor which measures the dose of the particle beam; a planning part which sets the irradiation dose applied to a target volume; and a controlling part which controls the irradiation dose applied to a target volume based on irradiation dose set value which is set by a value measured by the dose monitor and the planning part, wherein the planning part stores the absorbed dose distribution data in the depth direction which is prepared in advance using the absorbed dose at the reference depth which is a predetermined position nearer to an incident side of the particle beam than the position of Bragg peak as the reference and calculates the irradiation dose set value using the absorbed dose at the reference depth.

An in-vivo dose detector (41) for an HDR brachytherapy system (1; 31), wherein the detector is insertable into and movable through a catheter (15), and comprises a sensor (53) operable to detect radiation from a source (52) used to irradiate a tissue to be treated (9) in the course of an HDR brachytherapy treatment. A brachytherapy system and a method of dose monitoring are also disclosed.

The invention relates to a device and a method for demarcating and calibrating a dose monitoring detector in heavy ion beam cancer treatment. The structure of the device is characterized in that a collimator, the dose monitoring detector, a mini ridge-shaped filter, a water tank and a standard ionization chamber are arranged on a beam flux axis in sequence. The standard ionization chamber is arranged inside the water tank. The depth position of an irradiation beam mini spread-out Bragg peak in water is obtained by measuring absorbed dose of the standard ionization chamber at different depth in aqueous medium. At the depth position, the dose monitoring detector is demarcated and calibrated by the standard ionization chamber so as to obtain demarcating and calibrating factors of the measurement of the dose monitoring detector for the mini spread-out Bragg peak cancer treatment beam with a Gauss arrangement. With the demarcating and calibrating factors, the entire process of three-dimensional conformal irradiation therapy with uniform physical absorption dose or uniform biological effective dose in a tumor target volume can be conveniently controlled, the requirements of the treatment of different clinical cases in practical clinical treatment are satisfied, and the treatment efficiency of a treatment device is improved.

The monitoring film recovering method includes the following steps: a). depositing shielding layer on new or recovered monitoring film; b). ion injecting into the monitoring film with deposited shielding layer; c). utilizing thermal wave apparatus to measure thermal wave value of the ion-injected monitoring film; and d) using hydrolfuoric acid steam to remove shielding layer and recovering the monitoring film which can be reused for monitoring ion injection doping dose.

The invention discloses an accelerator X-ray dosage monitoring device in an X-ray radiation imaging system. The X-ray radiation imaging system comprises an accelerator X-ray source, a collimator for collimating X rays and a detection probe. The X-ray dosage monitoring device comprises an X-ray dosage monitoring probe, wherein X-ray dosage measured by the detection probe is corrected according to the X-ray radiation dosage monitored by the X-ray dosage monitoring probe. The X-ray dosage monitoring probe is arranged on at lease one side of a collimating slit of the collimator and is used for monitoring the dosage of the X rays radiated from an accelerator; and by changing the positions of dosage monitoring points, the dosage monitoring probe is arranged on the collimator, the monitoring probe is close to an accelerator target spot and the dosage rate of the accelerator received by the monitoring probe is high, so that data has high statistic properties. Simultaneously normal beams are not blocked, so the statistic properties of probe data of the detection probe are not reduced.

The invention provides a radiation dose measurement method based on a quantum dot electroluminescent principle, which includes acquiring electroluminescent signals of an electroluminescent system based on a quantum dot in a radiation field through an image acquiring system, obtaining electroluminescent signal strength through processing and amendment, and obtaining radiation dose information according to functional relationship of the electroluminescent signal strength and the radiation dose. The novel radiation dose measurement method effectively improves space and time resolution of radiation dose measurement results, can be used for monitoring steady state radiation field dose, can also be used for monitoring pulse radiation filed dose, can obtain two-dimensionally or three-dimensionally distributed real-time information of the radiation dose, and can obtain radiation dose information with spatial discrimination reaching micron dimension.

The invention discloses an interlocking system for particle dose safety protection. The system includes particle accelerators, an in-accelerator beam cut device, treatment room front end beam cut devices, a beam dose detection device, multiple treatment rooms, transmission system main line beam cut devices, a first controller and a second controller, wherein the beam cut devices are disposed in the particle accelerators, and the transmission system main line beam cut devices are disposed on a main beam transmission line. The system is advantaged in that the system is tested through beam dose monitoring devices in the treatment rooms, once the dose delivered to a patient body is found to be out of the safe range, interlocking is triggered immediately, the beam cut devices at the different locations in a particle therapy system are controlled for beam cut, in this way, the purpose of multi-point beam cut and redundant beam cut is achieved, safety and redundancy of the interlocking systemare guaranteed, and safety guarantee is provided for particle radiotherapy.

The invention relates to an inhaler with dose monitoring function, comprising a body equipped with a drug supplying suction nozzle and a by-pass pipe communicated with the drug supplying suction nozzle, a dose monitor and a transmission device. The invention is characterized in that when medicament is inhaled by users through the drug supplying suction nozzle, the inner pressure of the by-pass pipe induced by an inductor inside the dose monitor is transformed into a voltage signal, which is then transformed into dose value by a processor, and the dose value is finally transmitted to a distant receiving end through the transmission device.

The invention particularly relates to a dose monitoring system of a medical accelerator, which is used for accurate dose of medical accelerator output dose. The dose monitoring system is characterized in that a power supply assembly (5), a scanning tunneling microscope (STM) main control plate (2) and two dose integration plates (3 and 4) are fixedly arranged in a shell (1) and are electrically connected, the shell (1) is a full-aluminum shielding shell, the input ends of the two dose integration plates (3 and 4) are respectively provided with interfaces and are used for connecting and receiving a current signal generated by a dose monitoring ionization chamber, the output ends of the dose integration plates (3 and 4) are respectively connected with the input end of the STM main control plate (2), the output end of the STM main control plate (2) is connected with a communication interface via a controller area network (CAN) bus and is used for data transmission with a main control system of the medical accelerator by utilizing CAN communication, and the commutation interface is arranged on the shell (1). By the dose monitoring system, the influence of external electromagnetic interference and mutual interference prior to internal components on the dose monitoring system is effectively reduced, the dose monitoring accuracy is improved, and the stability of the main control system of the medical accelerator is improved.

The disclosure describes a technique for monitoring patient utilization of inhaled Nitric Oxide as well as waste exhaust of Nitric Oxide in gases exhaled from patient lungs. By monitoring the real dose provided to a patient, actual compliance with therapeutic target doses may be monitored to improve patient safety and therapeutic benefit from inhaled Nitric Oxide. Simultaneously, unnecessary waste of inhaled Nitric Oxide may be avoided thereby increasing the cost effectiveness of Nitric Oxide therapy. The minimization of Nitric Oxide waste has the further benefit of reducing environmental Nitric Oxide and Nitrogen Dioxide levels in e.g. a NICU environment thereby mitigating medical personnel's Nitric Oxide and Nitrogen Dioxide exposure.

There is disclosed a dose monitor method comprising illuminating a mask with illumination light, which is disposed in a projection exposure apparatus and in which a dose monitor pattern is formed, passing only a 0th-order diffracted light through a pupil surface of the projection exposure apparatus in diffracted lights of the dose monitor pattern, and transferring a 0th-order diffracted light image of the dose monitor pattern onto a substrate to measure dose, wherein during the illuminating, a center of gravity of the 0th-order diffracted light image passed through the dose monitor pattern on the pupil surface of the projection exposure apparatus is shifted from an optical axis of the projection exposure apparatus.

The invention discloses a time sequence based proton or heavy ion radiotherapy dose real-time monitoring method, and belongs to the field of nuclear medical images. The method is based on a proton or heavy ion radiotherapy system and a prompt gamma photon imaging system, a projection sequence of prompt gamma photons generated in the spot scanning process of each rumor target region according to time sequence information of detected prompt gamma photons, rebuilding prompt gamma photon space distribution of the spot scanning process of each tumor target region according to prior information of the prompt gamma photons, and thus dose deposition space distribution of protons or heavy ions in the spot scanning process of the corresponding tumor target region is calculated, so that real-time dose monitoring for the proton or heavy ion radiotherapy process is realized. The dose monitoring method disclosed by the invention effectively utilizes the prior information of prompt gamma photon space distribution, the design of the prompt gamma photon imaging system can be simplified, influences of prompt gamma photon counting statistical noises can be reduced, and the accuracy of proton or heavy ion dose monitoring is improved.

A gas scintillation detector is designed to provide in-beam absolute dose monitoring for ion beam radiotherapy treatments employing spot or raster beam scanning, especially with microsecond-scale beam pulses. Detection of prompt primary scintillation light emitted by gas molecules excited by beam passage provides electronic signals that can be processed to yield output data proportional to delivered dose up to high dose rates, and that appear quickly enough to provide feedback to influence real-time beam intensity adjustments for subsequent steps in the beam scan. When the scintillation light is collected in multiple photo-detectors, the invention is furthermore capable of measuring spot beam position with spatial resolutions of order one millimeter.

The present invention provides a radio therapy apparatus integrates fanctions of therapeutic design, analogue location, position-arranging restoration, intensity-regulating radiotherapy, dose-monitoring and control and prescriptino modification, having no need of moving patient and completing whole therapeutic process by one-step. It is characterized by that several cobalt-60 sources for making spiral tomoirradiation and matched collimator and correspondent location, safety-check and proving systems are mounte don the therapeutic main machine rotating-body structure-layer drum. It can raise intertarget dosage several times over and can reduce peripheral normal tissue damage dosage several time over.

An interventional system with real-time ablation thermal dose monitoring includes an interventional tool, an ultrasound transmitter at least one of attached to or integral with the interventional tool, an ultrasound receiver configured to receive ultrasound signals from the ultrasound transmitter after at least one of transmission through or reflection from a region of tissue while under an ablation procedure and to provide detection signals, and a signal processing system configured to communicate with the ultrasound receiver to receive the detection signals and to calculate, based on the detections signals, a thermal dose delivered to the region of tissue in real time during the ablation procedure.

The invention provides a neutron and gamma integrated electronic dose monitoring device which realizes the function of simultaneously monitoring the neutron external irradiation dose and gamma external irradiation dose of a worker in a neutron and gamma mixed complex radiation field by integrating the measurement functions of neutron dose and gamma dose measurement, is convenient to carry. Instrument carrying burden of workers is reduced, and radiation safety of the workers is ensured. According to the invention, the neutron dose value and the gamma dose value are measured and displayed in real time and are visual and easy to read, an alarm is given when the dose exceeds the limit, and the personal radiation dose of workers is ensured to be at a reasonable and as low as possible level.