Measurement of dose-width product in panoramic dental radiology.
The National Radiological Protection Board has recommended the introduction of dose-width product (DWP) for the measurement of patient dose in panoramic dental radiology. The present work describes a method for measuring DWP using a pencil ionization chamber. The technique was tested on five panoramic dental units; the reproducibility of the method was 5.7%. In order to test the method, DWP was also assessed using thermoluminescent dosemeters and film. The results obtained agreed within 8.6% with those obtained using the pencil ionization chamber method. The proposed method appears to be simple and precise.
Isoardi
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Department of Health Physics, Azienda Ospedaliera San Giovanni Battista di Torino, c.so Bramante 88, 10126 Torino, Italy.
Ropolo
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D006801:Humans; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods*; D011862:Radiography, Panoramic; D011874:Radiometry; D015203:Reproducibility of Results