A module (1) for a detector (14) of ionizing radiation comprising at least two detection segments (2) for detecting ionizing radiation, attached to a row carrier (3) allowing for the assembly of detectors (14) with an unlimitedly large detection surface for continuous imaging of ionizing radiation. The construction of the module (1), including a means (10) for power supply stabilization for each detection segment (2), an interconnection of electrical conductors (8), formed by printed circuit boards (9, 13) led vertically downwards perpendicular to the detector surface along the row carrier (3), and a parallel connection to the connectors (11) of the read-out electronics, increases the reliability and speed of the operation of the detector (14). Between the individual parts of the module (1) there are formed thermal bridges to stabilize the temperature and to increase the reliability of the detector (14) assemblies from the modules (1).