A radiation-sensing device is provided. The radiation-sensing device includes a substrate, a first scintillator layer, a second scintillator layer, and an array layer. The first scintillator is disposed on a first side of the substrate, and includes a plurality of first blocking walls and a plurality of first scintillator elements. The plurality of first scintillator elements are located between the plurality of first blocking walls. The second scintillator layer is disposed on a second side of the substrate, and the second side is opposite to the first side. The array layer is located between the first scintillator layer and the second scintillator layer, and has a plurality of photosensitive elements. In addition, a projection of at least one of the plurality of first blocking walls on the substrate overlaps with a projection of at least one of the plurality of photosensitive elements on the substrate.

Scintillator products, apparatuses and methods are provided for use in autoradiographic imaging of a tissue sample excised from a subject. In particular, scintillator products and devices are provided that are substantially conformable to a surface of the excised tissue sample and configured to scintillate, in use, in response to radiation from a radiopharmaceutical administered to the subject in advance of the excision.

A radiation detector includes a wiring board, a first image sensor, a second image sensor, a first fiber optic plate, a second fiber optic plate, and a scintillator layer. The first fiber optic plate can guide light between a first light entering region and a first light exiting region. The second fiber optic plate can guide light between a second light entering region and a second light exiting region. One side of the first light entering region and one side of the second light entering region are in contact with each other. The first light exiting region is positioned on a first light receiving region. The second light exiting region is positioned on a second light receiving region. One side surface of a first side surface and one side surface of a second side surface exhibit shapes along each other and in contact with each other.

In a method of making pixelated scintillators, an amorphous scintillator material in a molten state is pressed into a plurality of cavities defined by a plurality of walls of a mesh array. The molten scintillator material in the plurality of cavities is cooled to form a pixelated scintillator array. An x-ray imager including a pixelated scintillator is also described.

A multi-physical field measurement device for a metal solidification process and a housing and a measurement method thereof are provided. The device includes: a sealed housing provided with a light-through hole; a heater provided inside the housing and located behind the light-through hole along an X-ray; a diffraction detector used for receiving the X-ray which penetrates through a sample sheet and is scattered; a CMOS camera located behind the heater along the X-ray (11) and used for receiving a visible light signal which penetrates through the sample sheet; a silicon drift X-ray detector located at one side of the X-ray and used for receiving a fluorescent signal sent by interaction between the X-ray and the sample piece sheet; and an infrared thermal imager located at the other side of the X-ray and used for receiving an infrared signal sent by the sample sheet.

Tapered scintillator modules and detection devices having tapered scintillator modules in at least the end that contacts an optical sensor where the taper depends on the location of the scintillator module within the active area of the optical sensor is provided. Tapering of the scintillator modules may be close to the interface between the optical sensor and the module to minimize light leak to neighboring pixels at the interface while still allowing the detection device to retain high geometric efficiency and sensitivity to incident gamma rays since the distal end may not be tapered, which has a highest probability for gamma ray interaction based on Beer-Lambert law for photoelectric absorption.

Disclosed herein are variations of megavoltage (MV) detectors that may be used for acquiring high resolution dynamic images and dose measurements in patients. One variation of a MV detector comprises a scintillating optical fiber plate, a photodiode array configured to receive light data from the optical fibers, and readout electronics. In some variations, the scintillating optical fiber plate comprises one or more fibers that are focused to the radiation source. The diameters of the fibers may be smaller than the pixels of the photodiode array. In some variations, the fiber diameter is on the order of about 2 to about 100 times smaller than the width of a photodiode array pixel, e.g., about 20 times smaller. Also disclosed herein are methods of manufacturing a focused scintillating fiber optic plate.

A radiation detector can include a scintillator having opposing end surfaces and a plurality of discrete photosensors disposed on an end surface of the scintillator. In an embodiment, the photosensors are disposed at the corners or along the peripheral edge of the end surface, as opposed to being disposed at the center of the end surface. In an embodiment, the plurality of discrete photosensors may cover at most 80% of a surface area of the end surface of the scintillator and may not cover a center of the end surface of the scintillator. In a further embodiment, an aspect ratio of the monolithic scintillator can be selected to improve energy resolution.

The invention provides a novel arrangement of photon sensors on a scintillation-crystal based gamma-ray detector that takes advantage of total internal reflection of scintillation light within the scintillation detector substrate. The present invention provides improved spatial resolution including depth-of-interaction (DOI) resolution while preserving energy resolution and detection efficiency, which is especially useful in small-animal or human positron emission tomography (PET) or other techniques that depend on high-energy gamma-ray detection. Moreover, the new geometry helps reduce the total number of readout channels required and eliminates the need to do complicated and repetitive cutting and polishing operations to form pixelated crystal arrays as is the standard in current PET detector modules.

A scintillation-crystal based gamma-ray detector with photon sensors disposed on edge surface(s) of the crystal to take advantage of total internal reflection of scintillation photons within the thin-slab detector substrate to improve spatial resolution of determination of a scintillation event (including depth-of-interaction resolution) while preserving energy resolution and detection efficiency. The proposed structure benefits from the reduced—as compared with related art—total number of readout channels elimination of need in complicated and repetitive cutting and polishing operations to form pixelated crystal arrays used in conventional PET detector modules. Detectors systems utilizing stacks of such detectors, and methods of operation of same.