Fundamental study on dose evaluation in upper GI of comprehensive medical examination

Abstract

For the purpose of basic examination of the dose evaluation of upper gastrointestinal tract radiography (upper GI), this study was conducted on 331 subjects undergoing upper GI by the Miyagi Cancer Society Association based on Reference Imaging Method II and by four radiological technologists (BMI, body fat percentage, abdominal girth). The years of experience of the technicians in charge of the inspection and the entrance surface dose (ESD) were compared. As a result, the ESD in photography exhibited a strong positive correlation with BMI, and the incident surface dose in fluoroscopy strongly influenced individual differences among technicians rather than the body shape of the subject. In addition, the ESD in fluoroscopy of experienced technicians is larger than those of experienced technicians, and under the conditions of this study, the ESD per examination accounted for 70% to 80% of the ESD per perspective. In this study, we confirmed that fluoroscopy in the ESD of upper GI is large, and in a study showing that reviewing X-ray conditions and reducing fluoroscopic dose for high BMI subjects are effective for dose reduction is there.