South Australian Numbered Regulations South Australian Numbered Regulations100—Fixed and mobile fluoroscopic apparatus
(1) Fixed fluoroscopic apparatus must be designed and constructed so that the minimum distance between the focus of the X-ray tube and the patient entrance surface is—
(a) in the case of apparatus that has a patient support permanently between the X-ray tube and the patient—not less than 400 millimetres;
(b) in any other case—not less than 300 millimetres.
(2) Mobile fluoroscopic apparatus must be designed and constructed so that—
(a) the distance between the focus and the X-ray tube and the patient entrance surface is not less than 200 millimetres other than in the case of a mini C-arm apparatus that has a maximum tube current not exceeding 200 microamperes; and
(b) the radiographic exposure switch is attached to the apparatus by a cord that is not less than 2 metres in length.
(3) Except where it is not reasonably practicable to do so, a person must not operate mobile fluoroscopic apparatus so that the distance between the focus of the X-ray tube and the patient entrance surface is less than 300 millimetres.