Patient characteristics
CORONARY HEART DISEASE
A total of 568 patients were included in the final analysis. Among the 418 patients from the first medical center, there were 300 and 118 patients assigned to the training data set and internal validation data set, respectively. As shown in Table Patient characteristicsASA, American Society of Anesthesiologists; CHD, coronary heart disease; S–W, Shapiro–Wilk test.An overview of the radiological results is shown in Table Radiological resultsSMV, superior mesenteric vein; S–W, Shapiro–Wilk test.The relevant baseline data and an overview of the radiological results in the internal validation data set and external validation data set are presented in Tables 