RADIATION DOSE REDUCTION IN DENTAL ROENTGENOGRAPHY

Journal Article · Mon Dec 01 04:00:00 EST 1958 · Am. J. Roentgenol. Radium Therapy Nuclear Med.

OSTI ID:4322385

Etter, L E; Sidhu, S S; Cross, L C

It is evident that one of the largest sources of imperfectly controlled radiation emanates from dental roentgen-ray machines. This is because they are operated at relatively low kilovoltages and current values for long times of exposure, with no diaphragming of the beam or filtration of it, short focal-film distances and, often, by using standard, relatively slow films. This overdosage can be corrected by employing at least 2 mm Al filtration in the present machines in addition to a lead disphragm and ultra-speed film. To take fall advantage of known physical principles in reducing radiation exposure, higher kilovoltage dental roentgen-ray machines capable of developing 90 or better kv with current capacities of 15 to 20 ana, timers accurate to 1/2th of a second, long-cone techniques, and fastest films are recommended. (auth)

• Research Organization: Univ. of Pittsburgh; Argonne National Lab., Chicago; Veterans Administration Hospital, Pittsburgh
• NSA Number: NSA-13-002112
• OSTI ID: 4322385
• Journal Information: Am. J. Roentgenol. Radium Therapy Nuclear Med., Journal Name: Am. J. Roentgenol. Radium Therapy Nuclear Med. Vol. Vol: 80
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ALUMINUM
BONES
CURRENTS
ELECTRIC FIELDS
FILTERS
HEALTH AND SAFETY
PHOTOGRAPHIC FILM
RADIATION DOSES
RADIATION PROTECTION
TEETH
X RADIATION