CFR 1020.32 Fluoroscopic equipment (b)(2) Further means for limitation

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(2) Further means for limitation Means shall be provided to permit further limitation of the x-ray field to sizes smaller than the limits of paragraphs (b)(4) and (b)(5).

Beam-limiting devices manufactured after May 22, 1979, and incorporated in equipment with a variable SID and/or the capability of a visible area of 'greater than 300 square cm, shall be provided with means for stepless adjustment of the x-ray field.

Equipment with a fixed SID and the capability of a visible area of no 'greater than 300 square cm shall be provided with either stepless adjustment of the x-ray field or with a means to further limit the x-ray field size at the plane of the image receptor to 125 square cm or less.

Stepless adjustment shall, at the greatest SID, provide continuous field sizes from the maximum obtainable to a field size containable in a square of 5 cm by 5 cm.

This paragraph does not apply to non-image-intensified fluoroscopy.

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