Radiation Protection Considerations of Overhead Fluoroscopic Installations

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Abstract
Recently some X-ray manufacturers in this country have copied a European trend for installation of diagnostic X-ray rooms with an overhead fluoroscopic arrangement. The obvious advantage for performing fluoroscopy in this manner is an economic one. Thus, one X-ray tube can be used for both radiographic exposures and fluoroscopic examinations. When operated remotely, radiation protection problems are minimal. However, in actual practice, some users of this equipment find it necessary to be situated near the patient during fluoroscopy. Data are presented to show the hazards associated with such use. Remedial efforts for achieving acceptable “in-room” operation are described. The different back-scatter geometry that obtains in overhead fluoroscopy can explain the increased exposure levels to personnel versus those found in conventional fluoroscopy.

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