A radio-opaque plastic scintillator detector (PSD) for use in various medical applications and methods of making and using the PSD. The method requires coating a plastic scintillator fiber with a radio-opaque material; cutting the scintillator fiber; stripping the end of a plastic fiber optic fiber; cutting the naked end of a plastic fiber optic fiber; inserting a closely fitting guide tube over the naked end and inserting the cut scintillating fiber into the guide tube; coating the detector end of the cable with a light opaque polymer or jacket and adding a connector to the other end.

A device for determining an ionizing radiation dose deposited by a medical imaging apparatus during a radiological examination of a patient includes at least one measurement probe comprising at least one optical probe defining two exit ends, the optical probe comprising at least one active section made from a scintillator and intended to emit photons under the effect of incident ionizing radiation and at least two transport sections that are placed on either side of the active section and configured to transport the photons emitted by the active section to the exit ends; at least one detection system comprising at least two photodetectors, each photodetector being connected to one respective exit end of the optical probe to receive and count the photons received from the exit end; and at least one processing module configured to determine the deposited dose on the basis of the measurements carried out by the photodetectors.

Alkali free fluorophosphate-based glass system that is highly radiation resistance (for example, they remain transparent and do not solarize before, during, and after application of high energy radiation of 10.sup.5 Rad or (1 kGy) or greater) and hence, reusable and further, when used with Ce provide a mechanism for determining the existence of radiation.

Techniques are disclosed for systems and methods to detect radiation accurately, and particularly in a highly radioactive environment. A system includes a detector module for a radiation detector and a parallel signal analyzer configured to receive radiation detection event signals from the detector module and provide a spectroscopy output and a dose rate output. The parallel signal analyzer may be configured to analyze the radiation detection event signals in parallel in first and second analysis channels according to respective first and second measurement times and determine the spectroscopy output and the dose rate output based on radiation detection event energies determined according to the respective first and second measurement times.

A radio-opaque plastic scintillator detector (PSD) for use in various head and neck radiation applications is described. Bite plates, nose cones and ear cones are provided for use therewith, each having hollow tubes into which PSD cables can be inserted for real time measurement of radiation during treatment.

Provided is a radiation monitor and the like capable of appropriately measuring radiation. A radiation monitor (100) includes: radiation detection units (11, 12); optical fibers (13p, 13q) that transmit light generated by a plurality of radiation detection elements (11a, 12a) to merge; a light detection unit (14) that converts the light after merging guided to the light detection unit into an electric pulse; a measurement device (15) that calculates a dose rate of radiation based on a count rate of the electric pulses; and an analysis/display device (16). Housings (11b, 12b) include a housing (11b) made of a first material and another housing (12b) made of a second material.

The radiation detection device includes a plurality of radiation detectors arranged in a row and is inserted into the body of patient subjected to the X-ray therapy. An X-ray detection signal (photon) is output from each of the radiation detectors that detects the X-ray applied to the patient. The dose rate measurement device separately connected to each of the radiation detectors obtains the dos rate at the position of each radiation detector based on the signals. The irradiation direction determination device determines whether the row of radiation detectors matches the irradiation direction of the X-ray using the dos rate obtained by each of the dose rate measurement devices. When the row of radiation detectors matches the irradiation direction, the energy distribution analysis device obtains an energy distribution using the dose rate at the positions of the radiation detectors by applying, for example, an inverse problem analysis called an unfolding method.

An apparatus for measuring ionizing radiation includes a detector having a cathode, an anode, a counting gas between the cathode and the anode for generating gas ionization by ionizing radiation, a voltage source for applying a voltage between the cathode and the anode, and a current measuring device for measuring a detector current between the cathode and the anode. The detector current is generated in the counting gas by the ionizing radiation. The apparatus further includes a setting device, wherein the setting device is configured for independently setting the apparatus into different operating modes depending on the measured detector current, and/or wherein the setting device is configured for independently setting the apparatus into different measurement ranges depending on the measured detector current.

A method for obtaining fast neutron and gamma ray quantities in an unknown neutron and gamma ray mixed field. The method is comprised of (1) a radiation detector capable of measuring neutrons and gamma rays, (2) identification of the neutron and the gamma ray interactions based on digital pulse shape analysis, (3) formation of a pulse height (or pulse area) histogram for both neutron and gamma ray events, (4) conversion of the neutron and gamma ray pulse height (or pulse area) histogram into a quantity of interest such as count rate, energy spectra, kerma, absorbed dose, and dose equivalent, for both instantaneous and integral readings, and (5) steps (2-4) occurring in real-time.

The present invention describes a dosimetry system for use in an irradiation system for radiology or radiotherapy. The dosimetry system comprises an at least two dimensional, radioluminescent, irradiation detection surface comprising radiosensitive material, the radiosensitive material having radioluminescent properties. The system also comprises a detection system configured for detecting radioluminescent radiation from the at least two-dimensional detection surface upon irradiation with a radiology or radiotherapy irradiating beam. The detection system comprises a detector sensitive for radioluminescence and a filter for at least partially blocking radiation from said radiology or radiotherapy irradiating beam and ambient light.