| 摘要 |
<p>The support beam is located longitudinally displaceable in a holder. On the beam (7,11) is fitted an X-ray tube (13) or a picture screen bearer (4) which is displaceably located along it. The support beam comprises a circular arc segment with a sector angle between 90 and 120 deg., or less than 90 deg. The holder (10) with the support beam (11) is fitted on the floor, or can be attached to a ceiling. They are also movable. Preferably, a holder (10) with a support beam (11) carries an X-ray tube (13), and a second holder (3) with a support beam (7) carries a picture screen bearer (9). The holders, support beams, X-ray tube and picture screen bearer are reciprocally displaceable so that the X-ray tube and the picture screen bearer can be directed towards each other in all positions.</p> |
