en Radiation Biology Radiation Biology تحقيق بديع Original Research <div style="text-align: justify;"><span style="font-size:10pt"><span style="text-justify:newspaper"><span style="text-kashida-space:50%"><span style="line-height:119%"><span style="font-family:Calibri"><span style="color:black"><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Background:</span></span></span></span></span></span> <span lang="en-GB" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-GB">To assess the degree of gastric dilatation in patients undergoing abdominal contrast-enhanced computer tomography (CT) and to identify factors associated with gastric dilatation. </span></span></span></span><span lang="en-GB" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-GB">Materials and Methods: </span></span></span></span></span></span><span lang="en-GB" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-GB">This study adopted a cross-sectional design. Participants ingested water to distend the stomach 10 minutes prior to CT examination.&nbsp; After baseline assessment, participants self-administered the STAI under research assistant supervision. The degree of gastric dilation positively correlated with image clarity score (scale 1~5). Ordinal logistic regression analysis was used to identify influencing factors. </span></span></span></span><span lang="en-GB" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-GB">Results: </span></span></span></span></span></span><span lang="en-GB" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-GB">A gastric dilation score of 5 (indicating maximal dilation) was recorded in 14.0% of case, with median oral contrast volume reaching 1000ml. Ordinal logistic regression analysis confirmed five independent predictors of gastric dilation quality: education (OR=1.534, 95%CI=1.056-5.138, P=0.008), BMI</span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">（</span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">OR=4.025, 95%CI=2.284-7-092, P<</span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="color:black"><span style="language:en-US">0.001, </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">water intake (OR=13.317, 95%CI 5.681-11.565, P<</span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="color:black"><span style="language:en-US">0.001), </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">fasting status (OR=1.544, 95%CI=1.323-1.916, P=0.022) and ethnicity (OR=1.679, 95%CI=1.311-1.916, P=0.023). Inter-reader agreement was excellent (ICC=0.943). </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Conclusions: </span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">In individuals who underwent abdominal contrast-enhanced CT, the general state of stomach filling was poor. The education level, dietary intake, the consumed amount of water, BMI and ethnicity contributed to gastric dilatation.</span></span></span></span></span></span></span></span></span></span></div> Gastric dilatation, multi-detector computed tomography, diagnostic imaging, contrast agent. 91 96 http://ijrr.com/browse.php?a_code=A-10-1-1460&slc_lang=en&sid=1 Q. Jing 7900319475328460032781 7900319475328460032781 No Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China L. Zhao zhaolihong741256@163.com 7900319475328460032782 7900319475328460032782 Yes Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China R. Yang 7900319475328460032783 7900319475328460032783 No West China School of Nursing, Sichuan University, Chengdu, Sichuan, China N. Hu 7900319475328460032784 7900319475328460032784 No Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China D. Wu 7900319475328460032785 7900319475328460032785 No Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China Z. Zhang 7900319475328460032786 7900319475328460032786 No Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China K. Qiu 7900319475328460032787 7900319475328460032787 No Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China X. Zhong 7900319475328460032788 7900319475328460032788 No Department of Radiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China