The clinical value of dual contrast-enhanced ultrasound in PTCD in patients with biliary obstruction

Objective To evaluate the clinical value of double contrast enhanced ultrasound (D-CEUS) in percutaneous transhepatic cholangial drainage (PTCD) in patients with biliary obstruction.Try to evaluate the clinical significance of double contrast enhanced ultrasound (D-CEUS) in catheterization and drainage of patients with biliary obstruction . Methods 29 patients with biliary obstruction underwent catheterization and drainage under the guidance of conventional ultrasound (US). Among them, 15 patients underwent double contrast enhanced ultrasound (D-CEUS), which includes transvenous contrast enhanced ultrasound (CEUS) and ultrasonic cholangiography (USC), were set as group B (experimental group), postoperative drainage and poor yellow reduction were guided by double contrast enhanced ultrasound (D-CEUS); the remaining 14 patients were were randomized as control (group A) without other operations. Results The bile drainage volume of patients in group A was lower than that of group B at 1, 3, and 7 days after receiving biliary drainage, and the difference between the two groups was statistically significant ( F  = 16.085, P  < 0.05). The total bilirubin, γ-GT, and ALT in group A were higher than those in group B, and the difference between the two groups was statistically significant ( P  < 0.05). There were 5 patients in group A who failed to insert the tube and the position of the tube was poor (5/14 (35.71%)), and all 15 patients in group B were successful in one-time catheterization (15/15 (100%)), and the difference between the two groups was statistically significant ( χ ²  = 8.413, P <0.05). Six patients in group A had postoperative complications, and there was only one patient in group B, and the difference between the two groups was statistically significant ( χ ²  = 5.585, P  < 0.05). Conclusion double contrast enhanced ultrasound (D-CEUS) can effectively perform preoperative lesion assessment, intraoperative catheter placement navigation, and postoperative auxiliary adjustment for biliary obstruction patients undergoing percutaneous transhepatic cholangial drainage (PTCD), which effectively improving the efficiency of reducing yellowing.