Verfahren und Methode zur zerstörungsfreien Prüfung mit gleichzeitiger Aufnahme von Röntgendaten und tomographischen Daten

摘要

This device comprises a source-detector assembly (2-6) for X or gamma radiation, an object support (16) placed between the source and the detector, means (17) for providing at least one relative rotational movement of the support with respect to the source-detector assembly, the detector being a two-dimensional detector delivering, for each point of each radiographic projection, an analog signal proportional to the quantity of radiation transmitted by the object (4), an analog-digital converter (22) for converting the signals coming from the detector into digital data, a first memory (28) for storing these digital data, a system (30) for extraction and accumulation of part of these stored data, corresponding to at least one particular area to be monitored of the object, a second memory (32) for storing the sinogrammes obtained from the selected and accumulated data and a system for processing these sinogrammes in order to reconstruct the tomographic cross-sections. ……