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KMID : 1001220130150020013
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Journal of the Korean Society of Digital Medical Imaging Technology
2013 Volume.15 No. 2 p.13 ~ p.18
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Fluoroscopic the equipment study in accordance with the entrance surface dose study of patients and practitioners
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Yang Hae-Doo
Hong Seon-Sook
Seong Min-Sook
Ha Dong-Yoon
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Abstract
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Purpose : Fluoroscopy equipment, depending on the type of changes that occur in the patient’s position ESD and study the patient’s scatter ray of ESD Practitioners considered a comparative analysis was to evaluate the correct dose.
Materials and Methods : HITACHI four overtube type TU-8000 Flat Detector and Under tube C-Arm Philips’ Multi Diagnost Eleva with Flat Detector type were measured by. Each devices is a measure of the patient’s esd randophantom position in tabel unfors Xi multi funtion then fixed to the abdomen fluoroscopy and 10 seconds, spot was measured three times, practitioners of the incident surface dose by considering the patient’s scatter ray of the table for each device in the average human stomach 21cm thickness acrylic phantom ($25cm{\times}25cm$ 수식 이미지) Place the practitioner position after position randophantom unfors Xi multi funtion in the thyroid and stomach 1 minute by a fixed one-time fluoroscopy and measured.
Results : 10 seconds and the patient perspective of the c-arm ESD 1.2 times smaller on the AP and oblique measurements were measured in the 6-13 times smaller. spot positions to changes in the measured three times on the AP of the abdomen, ESD is 18 times smaller c-arm measurements and the oblique measurement was 19-30 times smaller. And 1 minute at practitioners fluoroscopy esd in the thyroid 2.12 times the c-arm, chest 1.75 times less the dose was measured. On the AP, depending on the device, but the lack of dose difference oblique positions of the two devices depending on changes in the area due to changes in both the AP than on the dose increased, the difference in dose between the two devices, the maximum difference was approximately 27 times.
Conclusion : Fluoroscopic equipment at the time of inspection in accordance with changes in dose according to the patient and the patient’s positions changes, because the area of the scatter ray considering the change of dose measurements be made, and study of the equipment according to the characteristics of the efficiency and the exposure of the patient and practitioner is considered smooth study equipment manufacturers that can be done is to build the system and think that is also important. Various fluoroscopy when you check future changes in many factors of change in dose for the equipment in the laboratory system by considering the scatter ray radiation shielding for the management to take advantage of reckless undertube have been utilized as more exposure Reduction activities can help is considered as the direction.
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KEYWORD
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Fluoroscopy, ESD: Entrance Surface Dose, dose
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