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AssigneeSiemens Aktiengesellschaft
InventorsMichael Dobert, Werner Gunther, Erich Heubeck
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A dental X-ray diagnostic installation for producing panoramic tomograms of the jaw of a patient is provided with a multiple diaphragm part having a plurality of different diaphragm apertures which can be adjusted to be positioned into a beam path from the X-ray source to enable producing different exposures. Preferably, the multiple diaphragm part is mounted for rotation on an axis so that the diaphragm apertures can be respectively aligned to the beam path of the radiation source. The multiple diaphragm part can be either a one-piece diaphragm member having a cylindrical configuration, a multiple piece member having a disk configuration, or can be a box-shaped carrier carrying a plurality of diaphragm inserts.
In a dental X-ray diagnostics apparatus for producing panoramic tomograms of a jaw of a patient, said apparatus including a radiation source creating a beam of radiation directed in a beam path towards a film cassette, and a diaphragm being positioned in the beam path of the radiation beam for limiting the size of said beam the improvements comprising said diaphragm being a multiple diaphragm part having a plurality of diaphragm inserts with different diaphragm apertures, said part being mounted for rotation around an axis to position different diaphragm apertures in the beam path from the radiation source and means for adjustably mounting the inserts on the diaphragm part, said means for adjustably mounting including adjustment elements enabling selectively positioning each insert relative to the beam path when the insert is positioned in said beam path.
In a dental X-ray diagnostics apparatus for producing panoramic tomograms of a jaw of a patient, said apparatus including a radiation source creating a beam of radiation directed in a beam path towards a film cassette, and a diaphragm being positioned in the beam path of the raidation beam for limiting the size of said beam the improvements comprising said diaphragm being a multiple diaphragm part, said diaphragm part being a cylindrical member having a cylindrical surface with a plurality of different diaphragm apertures being formed in said cylindrical surface, said cylindrical member being mounted for rotation around an axis to position different diaphragm apertures in the beam path from the radiation source.
Dependencies are inferred from the claim text.