Dosimetric measurements and comparison studies in digital imaging system
2008
Number of radiologic exams using digital imaging systems has rapidly increased with advanced imaging technologies.
However, it has not been paid attention to the radiation dose in clinical situations. It was the motivation to study
radiation dosimetry in the DR system. The objective of this study was to measure beam quality and patient's dose using
DR system and to compare them to both IEC standard and IAEA guidelines. The measured average dose for chest and
abdomen was 1.376 mGy and 9.501 mGy, respectively, compared to 0.4 mGy and 10.0 mGy in IAEA guidelines. The
results also indicated that the DR system has a lower radiation beam quality than that of the IEC standard. The results
showed that the patients may be exposed higher radiation for chest exams and lower radiation for abdomen exams using
DR system. IAEA Guidelines were prepared based on western people which may be different weight and height for
patients compared them to Korean. In conclusion, a new guideline for acceptable DR dosimetry for Korean patients may
need to be developed with further studies for large populations. We believe that this research greatly help to introduce
the importance of the dosimetry in diagnostic radiology in Korea. And, a development of database for dosimetry in
diagnostic radiology will become an opportunity of making aware of radiation safety of medical examination to patient.
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