A DEVICE FOR AUTOMATIC GENETIC PROTECTION IN CHEST RADIOGRAPHY ("GENOPROT")

Journal Article · Sun Jan 01 04:00:00 EST 1961 · Acta Chirurgica Academiae Scientiarum Hungaricae (Hungary)

OSTI ID:4631943

Hrabovszky, Z; Huszar, L

Preliminary to development of gonadal shielding measures, gonadal dosimetry studies were made in men and women, by use of ionization chambers, during diagnostic radiography and fluoroscopy procedures. According to these measurements, men receive exposures of 0.6 mrem and women 1.8 mrems during chest fluoroscopy. Fluoroscopy on children results in higher exposures as a consequence of the smaller dimensions of their body. Boys' gonads up to the age of one yr receive an exposure of 20 mrem, from 1 to 6 yr 0.8 mrem, and from 6 to 14 yr 0.5 mrem during a single chest fluoroscopy. Babies' gonadal exposure is thus 25-fold that of children of the ensuing age group and up to 40-fold that from 6 to 14 yr. In Hungary the frequency of chest fluoroscopy is very high, as a consequence of general social insurance. In postero-anterior chest roentgenographs taken with a depth diaphram an average of 0.34 and 0.28 mrem was the dose in 5-yr-old boys and girls, respectively, and in anteroposterior fllms of boys up to age 1 yr 16 mrem and in lateral films 38 mrem without depth diaphragm and lead shielding. With precise collimation and lead shielding the values were below 1 mrem. Automatic gonad protection was instituted through the Genoprot cassette stand for chest examinations. When the cassette has been adjusted to the patient's height and the horizontal central beam of x rays centered on the cassette, a protective shield will cover automatically, without separate adjustment, all body parts below to the useful lower limit of the thorax field being radiographed. To ensure a rapid, safe adjustment, a horizontal red- light film indicator on the cassette holder of the Genoprot shows the position for changing the film size and selecting another cassette size; by turning the selector switch mounted to the cassette holder the necessary correction is accomplished to ensure protection below the lower film margin. Scattered radiation is diminished in the patient by the back shield employed in the Genoprot, which also provides a sharper image on the radiograph. (BBB)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-039319
• OSTI ID: 4631943
• Journal Information: Acta Chirurgica Academiae Scientiarum Hungaricae (Hungary), Journal Name: Acta Chirurgica Academiae Scientiarum Hungaricae (Hungary) Vol. Vol: 2; ISSN ACAHA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
AGE
BEAMS
BONES
CONFIGURATION
DIAGNOSIS
FLUORESCENCE
GENETICS
GONADS
HEALTH AND SAFETY
HUNGARY
IMAGES
IONIZATION CHAMBERS
LABORATORY EQUIPMENT
LEAD
LENSES
LUNGS
MAN
MEASURED VALUES
PHOTOGRAPHIC FILM
RADIATION DOSES
RADIATION PROTECTION
RADIOGRAPHY
SCATTERING
SEX
SHIELDING
THORAX
X RADIATION