24 matching records for PHOTON.
An assembly of devices designed for bone density measurements and other calculations based on data obtained using a two distinct photon energy peak. Also referred to as a bone densitometer. It utilizes an x-ray tube or tubes as the photon source which are m...
A device that is a naturally-occurring, accelerator- or reactor-produced radioactive isotope and intended to be permanently implanted into the body in order to deliver curative or palliative radiotherapy treatments. It is typically placed in the body by mea...
An instrument specifically designed to be used to check the calibration and performance of linear and non-linear medical accelerator systems used for radiation therapy applications, for quality assurance (QA) purposes. It includes a variety of instruments u...
A device consisting of a variety of multi-modality radiation therapy phantom designs. It can consist of an object of uniform material density or a two or three-dimensional (3-D) model containing patterns of objects, materials, or openings. It is available i...
A physiological monitoring unit used a component of a diagnostic nuclear medicine imaging system, e.g., single photon emission computed tomography (SPECT), positron emission tomography (PET) or gamma camera, that produces a signal which enables image format...
An assembly of devices which is considered to be a component of a nuclear medicine (NM) imaging system [e.g., a gamma camera or a single photon emission computed tomography (SPECT)] and is used as a rebreathing device to deliver gas to the patient and conta...
A device which is either a radioactive sealed source or a water-filled radiolucent disc or other shape to which radioactivity can be added. It is a quality assurance (QA) device used in both subjective and quantitative evaluations of various calibration and...
An individual software program or group of programs, routines or algorithms that add specific image processing and/or analysis capabilities to a single photon emission computed tomography (SPECT) imaging system configuration. A basic set of applications pro...
A device which is either a linear radioactive sealed source or refillable linear radiolucent tube to which radioactivity can be added. It is a quality assurance (QA) device used in both subjective and quantitative evaluations of various calibration and perf...
A precise radiation counting instrument that uses a number of interchangeable radiation detection ionization probes and charger-reader mechanism. The charger is used to apply an electrostatic charge to the chamber. The drop in chamber voltage caused by a ra...
A device that includes a wide variety of two or three-dimensional (3-D) phantoms used in both calibration protocols and in subjective and quantitative evaluations of the performance of diagnostic nuclear medicine (NM) detector systems, e.g., gamma cameras, ...
An assembly of devices comprising a diagnostic, positron emission tomography (PET) imaging system used to detect, record, quantify and analyse 511 kilo-electronvolt (keV) photon emission patterns resulting from annihilation reactions produced during the dec...
An assembly of devices comprising a diagnostic, stationary, single photon emission computed tomography (SPECT) system designed exclusively for use in tomographic imaging applications. It detects, records, quantifies and analyses radionuclide emissions produ...
An assembly of diagnostic devices that comprise a radiological imaging system that is a combination of a single photon emission computed tomography (SPECT) camera system for nuclear medicine (NM) images, and a computed tomography (CT) camera system for x-ra...
A device which is either a radioactive sealed source or a refillable well made of radiolucent material to which radioactivity can be added. A point source is a quality assurance (QA) device used in both subjective and quantitative evaluations of various cal...
"An individual software program or group of programs, routines or algorithms that add specific image processing and/or analysis capabilities to a single photon emission computed tomography (SPECT) imaging system configuration. A basic set of applications pr...
A device designed specifically for use in gamma camera or single photon emission computed tomography (SPECT) based planar positron imaging applications operating with an energy range above 500 kilo-electronvolt (keV). It consists of an array of small openin...
A device that consists of preserved human or animal tissue, or a two or three-dimensional (3-D) tissue-equivalent model designed to mimic the functional, physical, or a combination of these characteristics of normal or diseased human organs. It is used in d...
A multi-purpose device that can be a component of a nuclear medicine (NM) imaging system, e.g., a single photon emission computed tomography (SPECT), positron emission tomography (PET) or a gamma camera and which functions as the primary control panel. It t...
A freestanding, image processing device that is a component of single photon emission computed tomography (SPECT) system. It is sometimes considered to be a component to a picture archiving and communication system (PACS). It does not contain the controls f...
A device used with a diagnostic or therapeutic x-ray system consisting of single/compound metal composition sheets that are designed to be placed in the path of the x-ray beam before it reaches the patient (target). It is typically made of aluminium, copper...
A conical shaped housing of lead or equivalent material with a single small opening of a fixed diameter at the tapered end of the cone. It projects an inverted image of photon distribution onto the system's crystal detector ensuring that only gamma ray acti...
An individual hollow-bore cylinder made of a dense material, e.g., lead (Pb), tungsten (W) or titanium (Ti), used to ensure that only gamma ray activity directly in front of the collimator channel reaches the scintillation crystal of the imaging or detector...
An assembly of devices comprising a diagnostic, stationary, single photon emission computed tomography (SPECT) system that is a three-dimensional (3-D) tomographic imaging gamma camera-based system used to detect, record, quantify and analyse radionuclide e...