MEASUREMENT OF BONE MARROW AND GONADAL DOSE FROM THE CHEST X-RAY EXAMINATION AS A FUNCTION OF FIELD SIZE, FIELD ALIGNMENT, TUBE KILOVOLTAGE, AND ADDED FILTRATION

Technical Report · Mon Aug 01 04:00:00 EDT 1960

OSTI ID:4071121

Epp, E R; Weiss, H; Laughlin, J S

Detailed measurements of bone marrow and gonadal dose were made in a realistic human phantom undergoing the conventional postero-anterior and lateral chest x ray procedures over a wide range of parameters. The parameters included different field sizes, small misalignments of the useful beam, and tube kilovoltages of 60, 8O, l00, and 120 kvp with various combinations of added filtration. The method of measurement involvsd the use of small ionization chambers, which were designed to bs sensibly independent of energy, direction, and intensity of incident x radiation. The results are expresssd in dose units per milliamperesecond of x-ray machine exposure. A study of radiologically acceptable film latitude was made to allow intercomparison of doses for the various beam qualities. The results show the importance of beam collimation and alignment in minimizing the dosage delivered to the active bone marrow and reproductive regions. By interpolation, estimates of bone marrow and gonadal exposure may be made for any chest x-ray procedure using parmneters within the range studied. (auth)

• Research Organization: Sloan-Kettering Inst. for Cancer Research, New York
• NSA Number: NSA-15-005231
• OSTI ID: 4071121
• Report Number(s): A/AC.82/G/L.474
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BEAMS
BONE MARROW
CHEST
DIAGNOSIS
DOSEMETERS
ELECTRICITY
ELECTRON TUBES
ENERGY LEVELS
FILTERS
GONADS
HEALTH AND SAFETY
IONIZATION CHAMBERS
LENSES
MAN
MATHEMATICS
MEASURED VALUES
MOCKUP
PERFORMANCE
PHOTOGRAPHIC FILM
PLANNING
QUANTITY RATIO
RADIATION DOSES
RADIOGRAPHY
SENSITIVITY
STANDARDS
USES
X RADIATION