Apparatus for radiographic projection tomography

In an apparatus for radiographic projection tomography, particularly mammography, an X-ray tube (5) is mounted at the end of a swiveling arm (10), with a relative movement mechanism (36, 37, 40, 41). The relative movement mechanism is such that it enables the tube to follow a path of a cycloid (44)....

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Bibliographic Details
Main Authors KLAUSZ, REMY, SOUCHAY, HENRI, JOUHIKAINEN, MATTI PETRI
Format Patent
LanguageEnglish
French
German
Published 20.05.2009
Subjects
DIAGNOSIS
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
SURGERY
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Summary:In an apparatus for radiographic projection tomography, particularly mammography, an X-ray tube (5) is mounted at the end of a swiveling arm (10), with a relative movement mechanism (36, 37, 40, 41). The relative movement mechanism is such that it enables the tube to follow a path of a cycloid (44). Images or exposures taken only during the time when the tube, in its path, follows cusp points (13, 14) such that it is possible to keep a constant speed of movement of the arm while at the same time increasing the useful duration of an image. Vibration or oscillation effects inherent in the apparatus are compensated by the positioning, if necessary, of a counterweight (50).
Bibliography:Application Number: EP20050255858