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Method for processing data derived from an ionizing radiation detector

A technology of ionizing radiation and detectors, which is applied in radiation measurement, radiation intensity measurement, X/γ/cosmic radiation measurement, etc., and can solve problems such as incomplete positioning

Active Publication Date: 2012-07-11
COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, these methods are also insufficient, in particular because they are usually dedicated to the single-cause correction of disturbances and are therefore only suitable for certain measurement conditions, or because they give incomplete localization

Method used

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  • Method for processing data derived from an ionizing radiation detector
  • Method for processing data derived from an ionizing radiation detector
  • Method for processing data derived from an ionizing radiation detector

Examples

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Embodiment Construction

[0049] First, given Figure 5 description of. After taking measurements (step E1 ) and constructing a histogram of events ( E2 ) as it is conventional in accordance with one or preferably at least two of their parameters, the method may comprise setting Calibration (E3), possibly adding additional data (E4), reducing the acceptance probability (E5) for each measurement is performed in a coherent (set coherent) form. Coherence refers to the determination of an acceptance probability for an event for which at least one parameter is the same as the parameter under consideration when the measurement is made. Combining events and these probabilities, usually using a weighted calculation, gives a new event histogram (E6), where errors affecting the measurements are corrected. Calibration ( E3 ) for deriving acceptance probabilities can be performed before or after the measurements. As will be seen in the examples, this is an independent operation performed under certain calibrati...

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Abstract

Measurements of electric charges obtained by the impact of ionizing radiation on a semiconductor detector are grouped in a histogram. Calibrations and data otherwise obtained are used to obtain acceptance probabilities of measurements, which are used to construct a histogram of events by weighting the measurements so as to exclude the influence of some factors (such as diffused radiation) or on the contrary to enhance this influence.

Description

technical field [0001] The present invention relates to a method of processing data obtained from a detector of ionizing radiation, and more particularly to a method of processing data obtained from a detector of semiconductor material polarized by at least two electrodes arranged in a On either side of the volume formed by the detectors. Background technique [0002] Nuclear medicine, scintigraphy, single photo emission tomography (SPET), and generally Radiates all methods that generate interactions or events. Parameters can be of various types. However, a common example is an image of an object emitting radiation, the parameters of the histogram being the geometric coordinates. The points in the histogram represent the measured numbers or occurrence densities of these events for corresponding values ​​of the parameter values. [0003] Ionizing radiation is measured by a gamma camera or similar device comprising a semiconductor photosensitive element, where the radiatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/29G01T7/00
CPCG01T7/005G01T1/2928G01T1/17G01T1/247
Inventor 纪尧姆·蒙泰蒙特托马斯·博尔迪埃里克·格罗·达永
Owner COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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