Arrangement for intra-oral X-ray imaging

An intra-oral x-ray imaging arrangement, which includes as separate structures, first, a radiation source having a collimator structure limiting an x-ray beam for generating the beam used in imaging and for aiming the x-ray beam toward an object to be imaged, second, an imaging sensor arranged positionable within a patient's mouth, at least a first means arranged to transmit to a system controlling the imaging arrangement, wherein the imaging arrangement includes a signal generating means to generate measurement signals, the signal generating means including a three-axis acceleration sensor arranged in connection with the imaging sensor and a three-axis acceleration sensor arranged in connection with the radiation source to measure a spatial position of the imaging sensor and the radiation source and, further, a means in functional connection with the system controlling the imaging arrangement to send measurement signals based on the spatial position measurements to the system controlling the imaging arrangement, the measurement signals including information on a position of the imaging sensor and the radiation source, and wherein the system controlling the imaging arrangement includes a means to determine information on the relative spatial position between the imaging sensor and the radiation source or between the imaging sensor and a component arranged to the radiation source based on said measurement signals.