Measurement of skin entrance exposure with a dose-area-product meter at chest radiography.
Skin entrance exposure measurements obtained with a dose-area-product meter and thermoluminescent dosimeters were compared at posteroanterior and lateral chest radiography in 52 adult male patients. In a linear regression analysis of data collected in both views, values of 1.23 +/- 0.02 and 1.26 +/- 0.01 (r = .98 and .99) were found for the ratios of thermoluminescent-dosimeter and dose-are-product exposures, respectively. Skin entrance exposures from 16 mR (4.13 microC/kg) to 150 mR (38.7 microC/kg) in the posteroanterior view and 24 mR (6.19 microC/kg) to 475 mR (123 microC/kg) in the lateral view were found. Dose-area-product meters offer a rapid and accurate means to measure skin entrance exposure when the radiography field size is known.
Radiology Service, Veterans Affairs Medical Center, Oklahoma City, OK 73104, USA.
C K
CK
Parry
R Y
RY
Chu
B G
BG
Eaton
C Y
CY
Chen
D000328:Adult; D006801:Humans; D008297:Male; D011829:Radiation Dosage; D013902:Radiography, Thoracic; D011874:Radiometry / Q000295:instrumentation*; D012867:Skin / Q000528:radiation effects*; D013819:Thermoluminescent Dosimetry