X-RAY COLLIMATING AND BODY SHIELDING ACCESSORY INSTRUMENT
The invention is a beam limiting instrument (1) comprising a unit (3) having a frame (19) defining the perimeter about an aperture (20), and a manually adjustable rack (2) connected to the frame (19) for supporting the unit (3) with its aperture disposed between a source (4) of X-rays (6) and the body of a patient (5). Radio-opaque flexible panels (21) depending from the frame (19) are pivotable relative to the aperture (20) to collimate and limit X-rays (6) issuing from the source (4) through the aperture (20) to a particular area of the body of the patient (5). Translucent ports along lower edges of the panels serve to provide upon a photographic film (7) below the patient a scale indication of the area of the body of the patient (5) subjected to the X-rays (6).