Value of Direct Digital Radiography in Reducing Radiation in Chest Examination / 医疗卫生装备

Objective To discuss the value of radiation dose reduction with directed digital radiography application in chest X-ray. Methods Patients were in posterior-anterior standing posture for test. To compare DR exposure parameters with traditional roentgenography in the same exposure condition of 125 kVp, automatic mAs, 180cm focus-film distance. Patients' thoracic thickness was 22-25cm. Results DR can reduce exposure dose by 44.2%. Conclusion Directed digital radiography can improve the quality of chest images,make working flow more reasonable, enhance the working efficiency and reduce patient's x-ray dose as well.