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http://dx.doi.org/10.7742/jksr.2016.10.8.619

A Study of The Correlation of The Area Dose with Residual CT Contrast Media and MRI Contrast Media during The Use of General Imaging Automatic Exposure Control System  

Hong, Chan-Woo (Department of Radiological Science, Hallym Polytechnic University)
Park, Jin-Hun (Department of Radiological Science, Hallym Polytechnic University)
Lee, Jung-Min (Department of Diagnostic Radiology, Hallym University Chuncheon Polytechnic Hospital)
Seo, Young-Deuk (Department of Diagnostic Radiology, Bundang Seoul National University Hospital)
Publication Information
Journal of the Korean Society of Radiology / v.10, no.8, 2016 , pp. 619-627 More about this Journal
Abstract
The purpose of this study is to investigate the effect of CT contrast agent and MRI contrast agent on the area dose in the body when using automatic exposure control system in general radiography. After making rectangular holes in the center of the abdominal thickness paraffin phantom, CT contrast agent and MRI contrast agent were respectively diluted with physiological saline solution for contrast medium dilution ratio of 10:0, 9:1, 8:2, 7:3, 6:4, 5:5, 4:6, 3:7, 2:8, 1:9, 0:10%. Each experiment was set to 78 kVp, 320 mA, which is the proper condition for KUB photography, and thereafter a total of 30 inspections were made for each dilution ratio using an automatic exposure control device, and the area dose corresponding to the dilution ratio of each contrast agent, Average comparison and correlation analysis were performed on the exposure index. As a result, the CT contrast agent and the MRI contrast agent appeared different in area dose according to the dilution ratio(p<0.05), and as the dilution ratio increased, the area dose increased for CT contrast agent and MRI contrast agent(P<0.05). In each test, the exposure index showed the manufacturer's recommendation of 200-800 EI value, and the exposure index and area dose increased as the area dose increased(p<0.05). In conclusion, CT contrast agent and MRI contrast agent confirmed to increase the area dose by general imaging test using all automatic exposure control device. Therefore, it is considered that it is necessary to perform it after the contrast medium has been excreted sufficiently when using usual imaging test after using the contrast agent in CT and MRI examination.
Keywords
dose area product(DAP); auto exposure control(AEC); exposure index(EI); contrast media;
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Times Cited By KSCI : 13  (Citation Analysis)
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