Radiology assembly and method for aligning such an assembly

A radiology assembly comprising:

• an x-ray tube for generating a beam of x-rays that is centered around a main emission direction,
• a planar sensor extending in a plane defined by a first direction (D1) and by a second direction (D2), which directions are substantially perpendicular to the main x-ray emission direction, the sensor being intended to receive the x-rays, comprising:
• a first divided emitter that is divided into two electromagnetic-field-emitting portions and is arranged so as to emit a first electromagnetic field in a main direction that is substantially perpendicular to the main emission direction, each of the two emitting portions of the divided emitter being positioned on one respective side of the beam of x-rays,
• a second divided emitter that is divided into two electromagnetic-field-emitting portions and is arranged so as to emit a second electromagnetic field in a main direction that is substantially perpendicular to the main emission direction and is secant to the main direction of the first electromagnetic field, each of the two portions of the divided emitter being positioned on one respective side of the beam of x-rays,
• a so-called planar electromagnetic-field emitter, the so-called planar emitter being a coil composed of windings, the so-called planar emitter being arranged so as to emit a third electromagnetic field in a main direction that is substantially parallel to the main emission direction of the beam of x-rays, the windings being passed through by the main emission direction,
• electromagnetic-field sensors that are securely fastened to the planar sensor and are able to detect the first, second and third electromagnetic fields emitted alternately in their main direction by the first emitter, the second emitter and the so-called planar emitter and to generate a first, second, third electrical signal depending on the detected electromagnetic fields,
• a processing means for processing the first, second and third electrical signals that is intended to determine an angle of alignment between the main emission direction and a normal (N1) of the planar sensor, to determine a first centering error between the main emission direction of the first electromagnetic field and the first direction (D1) of the planar sensor, to determine a second centering error between the main emission direction of the second electromagnetic field and the second direction (D2) of the planar sensor, a correcting means for correcting the angle of alignment by applying a first corrective movement to the x-ray tube and first and second centering errors by applying the first corrective movement and/or a second corrective movement to the x-ray tube.