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http://dx.doi.org/10.7742/jksr.2019.13.3.399

Dose Reduction According to Geometric Parameters of Digital Cerebral Angiography  

Park, Chan Woo (Department of Radiological Science, Daegu Catholic University)
Cho, Pyong Kon (Department of Radiological Science, Daegu Catholic University)
Publication Information
Journal of the Korean Society of Radiology / v.13, no.3, 2019 , pp. 399-406 More about this Journal
Abstract
This study aims to find geometric parameters that the radiologist can change from time to time to reduce dose in angiography examinations. Depending on the geometric characteristics, the values calculated by effective dose were compared, while filming in fluoroscopy mode and Digital subtraction angiography, respectively. The study found that the lower the dose was in FPS mode, the lower the dose was reduced to 30-40%. Doses according to the X-ray angle were measured highest in AP View and lower as the angle went in the head direction. The greater the FOV, the higher the dose was 1.2-1.6 times, and the closer the distance between the X-ray tube and the table, the greater the dose was about 10%. Source-image intensifier distance (SID) get longer to 100 mm, dose of each fluoroscopy and Digital subtraction angiography increase up to 25-30%. In conclusion, various geometric characteristics in angiography examinations are parameters that can be applied by radiographers as frequently as possible, and appropriate geometric properties can be considered and applied in various situations, resulting in appropriate dose reduction.
Keywords
Digital angiography; Dose reduction; Fluoroscopy; Digital subtraction angiography;
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Times Cited By KSCI : 2  (Citation Analysis)
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