Abstract: An arm construction of an intra-oral x-ray device according to the present invention comprises at least two elongated support arms (55, 56, 55?, 56?) jointed to each other, into connection with a substantially first end of the first support arm (55) of which is arranged a radiation source (4) and in which at least one of the support arms (55, 56) comprises a cover which is arranged to comprise a structure openable or detachable in the longitudinal direction of the support arm, which structure is substantially of the length of the support arm or covers at least a significant portion of the length of the support arm.

Abstract: An arm construction of an intra-oral x-ray device according to the present invention comprises at least two elongated support arms (55, 56, 55?, 56?) jointed to each other, into connection with a substantially first end of the first support arm (55) of which is arranged a radiation source (4) and in which the jointing between the support arms is implemented such that the successive support arms (55, 56, 55?, 56?) connect to each other from sides (68, 69) of the support arms facing each other.

Abstract: An arm construction of an intra-oral x-ray device according to the present invention comprises at least two elongated support arms (55, 56, 55?, 56?) jointed to each other, into connection with a substantially first end of the first support arm (55) of which is arranged a radiation source (4) and in which at least one of the support arms (55, 56) comprises a cover which is arranged to comprise a structure openable or detachable in the longitudinal direction of the support arm, which structure is substantially of the length of the support arm or covers at least a significant portion of the length of the support arm.

Abstract: The invention relates to a patient support (17) for an odontological x-ray apparatus, which can be arranged e.g. to a patient support station (18) of the x-ray apparatus (10). The patient support (17) includes a substantially uniform, substantially curved or bendable to be curved band structure (21) substantially extending at least from one patient's temple to the other.

Abstract: This invention relates to tomographic imaging, and particularly to producing complex motion or spiral tomography images in medical X-ray imaging. According to the invention, a curved path is arranged for the radiation source of the imaging apparatus in the vertical direction with respect to the object to be imaged, and a counter-movement with respect to the curved movement of the radiation source in the vertical is implemented by moving the radiation detector substantially linearly with respect to the radiation source on the opposite side of the object to be imaged. It is also preferable to keep the detector constantly parallel with a cross-sectional plan through the object to be imaged.