Abstract: A method and apparatus are disclosed for performing in-bath filming during extracorporeal shock wave lithotripsy. The device has a holder for slidably receiving a film cassette and a grid therein. The holder has means for slidably mounting the holder on the image intensifier portion of an x-ray fluoroscope so that forces on the front of the holder can be transferred to pressure sensing means on the intensifier. The holder is constructed in a water-tight manner so that the film contained in the holder may be delivered beneath the level of water in the bath adjacent the abdomen of the patient in the bath. An inflatable bladder is provided on the outside of the holder to displace water from the area between the holder and the abdomen to prevent absorption and scattering of the x-rays by water in the area between the holder and the patient's abdomen.

Abstract: A new process for marking currency to permit easy and positive authentication at a later date comprising exposing a small region of the currency to bombardment by high energy neutrons for a short period, treating the exposed small region with a chemical reagent which reacts with the treated area to form tiny holes which can later be used for authentication. Also provide is a method for authentication which comprises exposing the marked currency to monochromatic X-rays, allowing the transmitted beam to impinge upon a fluorescent screen which will show shiny dots where the beam has reached the screen, said dots corresponding to the tiny holes in the marked currency.

Abstract: Medical diagnostic X-ray table assembly including an X-ray source and detector. The entire assembly is mounted on a cantilevered horizontal transverse pivot for being raised and lowered or tilted as a unit. The table assembly is mounted eccentrically to the horizontal transverse pivot so the table can clear the floor when tilted to the foot down position, yet the table is low enough to be mounted easily by a patient.The X-ray source and detector means are each supported by a series of superposed carriages driven by lead screw drives, thereby allowing the source and detector to independently translate transversely, longitudinally, and toward or away from the patient support. The X-ray source is also mounted on a transverse axis for being pivoted. A novel hydraulic mechanism is provided for tilting the table.

Abstract: Means for coupling an independently suspended medical x-ray source and detector for lateral fluorographic studies such as angiography. When coupled, the x-ray source and detector move vertically in opposite directions, move horizontally toward or away from each other, and pivot about horizontal axes so the distances between the focal spot and isocenter of examination and between the isocenter and image each remain constant, and so the central ray of the source coincides with the central ray of the detector. The bridge also rotates to rotate the entire assembly about a vertical axis passing through the isocenter.The x-ray source and detector are independently hung from the ceiling to support them directly above their centers of weight, eliminating the bending moments and oscillation which are inherent features of prior C-arm structures.

Abstract: Disclosed is an X-ray apparatus having an X-ray source, an X-ray imaging device in confronting relation to the X-ray source, a first support constructed and arranged for performing generally longitudinal movements for supporting the X-ray source, a second support constructed and arranged for performing generally longitudinal movements for supporting the X-ray imaging device, a first movable base for mounting the first support, a second movable base independent of the first movable base for mounting the second support, and a connector releasably interconnecting the support at a predetermined distance for allowing the support as interconnected to be operated in unison.

Abstract: In an X-ray photography apparatus of this invention, an X-ray tube and an image receiving device are attached to two tilting members which are each rockably supported on the distal end portion of a traveling support frame telescopically protruding parallel to a horizontal main axis from a rotating base rotating about the main axis. The position and the angle of X-raying of the X-ray tube may be set as desired by suitably selecting the length of extension of the traveling support frames and the angle of rotation of the tilting members. It is also possible to set as desired the position and direction of an image receiving device for receiving an X-ray beam transmitted through a subject or a patient.

Abstract: A fluoroscopic table having a table top for supporting a patient for irradiation by X-rays generated by a source located beneath the table top, which X-rays are directed through the table top and patient to a receptor located above the patient, the receptor comprising a heavy image intensifier and spot filming device, for example, movable longitudinally and transversely of the table, and the X-ray source comprising a heavy X-ray generator and collimator which are movable as a unit longitudinally and transversely of the table for constant alignment with the receptor, the mountings for the receptor and source being separate from one another and the movements thereof being individually controlled by servo mechanisms whereby precise alignment is automatically achieved and maintained.