On the use of NHZ-203C Thermoluminescence (TL) reader in clinical dosimetry.
The sensitivity vs. dose characteristics of two TL readers (Harshaw 2000 A + B and NHZ-203C) was compared both in the range of small doses (10 microGy to 100 mGy) as well as in the radiation therapy level by using individually calibrated LiF:Mg, Ti detectors manufactured in Poland. The performance of both systems can be predicted by a three parameter theoretical model. The very good reproducibility of the NHZ-203C reader (sigma/D = 0.6%) is important in radiation therapy while the high sensitivity (the lowest detectable dose limit = 3 S.D. of the background = 27 microGy) is useful for radiation protection measurements.
Zaránd
P
P
Oncoradiological Centre, Emil Weil Hospital, Budapest, Hungary.
Polgár
I
I
Katona
E
E
D005069:Evaluation Studies as Topic; D006801:Humans; D011879:Radiotherapy Dosage; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation*